417-02 Interior Lighting 2014 Fiesta
Diagnosis and Testing Procedure revision date: 05/21/2013

Interior Lighting

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

DTC Chart: BCM

  BCM DTC Chart


  DTC Description Action
B1091:12 Courtesy Lamp Sense: Circuit Short To Battery   GO to Pinpoint Test B
B1175:92 Drivers Door Ajar Switch: Performance or Incorrect Operation   GO to Pinpoint Test C
B1176:92 Passenger Door Ajar Switch: Performance or Incorrect Operation   GO to Pinpoint Test C
B11E9:92 Left Rear Door Ajar Switch: Performance or Incorrect Operation   GO to Pinpoint Test C
B11EA:92 Right Rear Door Ajar Switch: Performance or Incorrect Operation   GO to Pinpoint Test C
B1D14:11 Interior Lights Circuit "B": Circuit Short to Ground   GO to Pinpoint Test B


Symptom Chart(s)

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

Symptom Chart: Interior Lighting

  Symptom Chart


Condition Possible Sources Actions
A module does not respond to the scan tool
  • Fuse
  • Wiring, terminals or connectors
  • Module
 
REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).
The courtesy lamps do not illuminate with a door open Refer to the Pinpoint Test   GO to Pinpoint Test A
One or more interior courtesy lamps are inoperative Refer to the Pinpoint Test   GO to Pinpoint Test B
All the courtesy lamps stay on continuously Refer to the Pinpoint Test   GO to Pinpoint Test C
The luggage compartment/cargo lamp is inoperative or on continuously Refer to the Pinpoint Test   GO to Pinpoint Test D
One or more demand lamps are inoperative Refer to the Pinpoint Test   GO to Pinpoint Test E
The battery saver does not deactivate after timeout Refer to the Pinpoint Test   GO to Pinpoint Test F
The ambient lighting is inoperative Refer to the Pinpoint Test   GO to Pinpoint Test G
The ambient lighting does not cycle through all color combinations Refer to the Pinpoint Test   GO to Pinpoint Test H
The ambient lighting is always on Refer to the Pinpoint Test   GO to Pinpoint Test I


Pinpoint Tests

The Courtesy Lamps Do Not Illuminate With a Door Open


Refer to Wiring Diagrams Cell 89 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Interior Lighting - System Operation and Component Description (417-02 Interior Lighting, Description and Operation).

Possible Sources


PINPOINT TEST A : THE COURTESY LAMPS DO NOT ILLUMINATE WITH A DOOR OPEN
A1   CHECK FOR VOLTAGE TO THE AMBIENT LIGHTING MODULE
  • Ignition OFF.
  • Use the courtesy lamp switch on the front interior lamp to activate the overhead courtesy lamps.

Do the overhead courtesy lamps illuminate?

Yes GO to A2
No GO to Pinpoint Test B


A2   CHECK THE DOOR AJAR SWITCH OPERATION
  • Deactivate the overhead courtesy lamps from the front interior lamp.
  • Disconnect: Suspect door latch.

Do the courtesy lamps illuminate?

Yes For a front door, INSTALL a new front door latch.
REFER to: Front Door Latch (501-14 Handles, Locks, Latches and Entry Systems, Removal and Installation).

For a rear door, INSTALL a new rear door latch.
REFER to: Rear Door Latch (501-14 Handles, Locks, Latches and Entry Systems, Removal and Installation).
No GO to A3


A3   CHECK THE DOOR AJAR SWITCH INPUT CIRCUIT FOR A SHORT TO GROUND
  • Disconnect: BCM C2280G.
  • Measure:

      LH Front Door Ajar Switch


    Positive Lead Measurement / Action Negative Lead
      C525-3   Ground




      RH Front Door Ajar Switch


    Positive Lead Measurement / Action Negative Lead
      C609-6   Ground




      LH Rear Door Ajar Switch


    Positive Lead Measurement / Action Negative Lead
      C705-3   Ground




      RH Rear Door Ajar Switch


    Positive Lead Measurement / Action Negative Lead
      C805-6   Ground



Is the resistance greater than 10,000 ohms?

Yes GO to A4
No REPAIR the circuit.


A4   CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
  • Disconnect and inspect all BCM connectors.
  • Repair:
    • corrosion (install new connector or terminals – clean module pins)
    • damaged or bent pins – install new terminals/pins
    • pushed-out pins – install new pins as necessary
  • Reconnect the BCM connectors. Make sure they seat and latch correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?

Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new BCM .
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. CLEAR the Diagnostic Trouble Codes (DTCs).



One Or More Interior Courtesy Lamps Are Inoperative


Refer to Wiring Diagrams Cell 89 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Interior Lighting - System Operation and Component Description (417-02 Interior Lighting, Description and Operation).

Possible Sources



  DTC Fault Trigger Conditions


  DTC Description Fault Trigger Conditions
B1091:12 Courtesy Lamp Sense: Circuit Short To Battery A continuous and on-demand DTC that sets when the BCM detects a short to voltage on the interior lamps output circuit when it is energized.
B1D14:11 Interior Lights Circuit "B": Circuit Short To Ground A continuous and on-demand DTC that sets when the BCM detects a short to ground on the battery saver output circuit when it is energized.


Visual Inspection and Diagnostic Pre-checks


PINPOINT TEST B : ONE OR MORE INTERIOR COURTESY LAMPS ARE INOPERATIVE
B1   CHECK THE OPERATION OF ALL COURTESY LAMPS
  • Open a door.

Are all the interior courtesy lamps inoperative?

Yes GO to B2
No If the front interior lamp is inoperative, GO to B8
If the rear interior lamp is inoperative, GO to B11


B2   CHECK THE OPERATION OF THE INTERIOR DEMAND LAMPS
  • Activate and observe all the interior demand lamps.

Are all the demand lamps inoperative?

Yes GO to B3
No GO to B14


B3   CHECK VOLTAGE TO THE FRONT COURTESY LAMP
  • Ignition OFF.
  • Disconnect: Front Interior Lamp C931A and C931B (with overhead console).
  • Disconnect: Front Interior Lamp C931 (with anti-theft).
  • Disconnect: Front Interior Lamp C918 (without overhead console).
  • Disconnect: Front Interior Lamp C929 (with roof opening panel).
  • Ignition ON.
  • Measure:

      With Overhead Console


    Positive Lead Measurement / Action Negative Lead
      C931B-1   Ground




      With Anti-Theft


    Positive Lead Measurement / Action Negative Lead
      C931-1   Ground




      Without Overhead Console


    Positive Lead Measurement / Action Negative Lead
      C918-3   Ground




      With Roof Opening Panel


    Positive Lead Measurement / Action Negative Lead
      C929-3   Ground



Is the voltage greater than 11 volts?

Yes GO to B4
No GO to B6


B4   CHECK COURTESY LAMP CONTROLLED GROUND FOR A SHORT TO VOLTAGE
  • Ignition OFF.
  • Disconnect: BCM C2280C.
  • Ignition ON.
  • Measure:


    Positive Lead Measurement / Action Negative Lead
      C2280C-5   Ground



Is any voltage present?

Yes REPAIR the circuit.
No GO to B5


B5   CHECK THE FRONT COURTESY LAMP GROUND CONTROLLED CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Measure:

      With Overhead Console


    Positive Lead Measurement / Action Negative Lead
      C931A-1   C2280C-5




      With Anti-Theft


    Positive Lead Measurement / Action Negative Lead
      C931-2   C2280C-5




      Without Overhead Console


    Positive Lead Measurement / Action Negative Lead
      C918-1   C2280C-5




      With Roof Opening Panel


    Positive Lead Measurement / Action Negative Lead
      C929-2   C2280C-5



Is the resistance less than 3 ohms?

Yes GO to B17
No REPAIR the circuit.


B6   CHECK THE COURTESY LAMP VOLTAGE CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect: BCM C2280C.
  • Disconnect: Front Interior Lamp C931A and C931B (with overhead console).
  • Disconnect: Front Interior Lamp C931 (with anti-theft).
  • Disconnect: Front Interior Lamp C918 (without overhead console).
  • Disconnect: Front Interior Lamp C929 (with roof opening panel).
  • Measure:

      With Overhead Console


    Positive Lead Measurement / Action Negative Lead
      C931B-1   C2280C-14




      With Anti-Theft


    Positive Lead Measurement / Action Negative Lead
      C931-1   C2280C-14




      Without Overhead Console


    Positive Lead Measurement / Action Negative Lead
      C918-3   C2280C-14




      With Roof Opening Panel


    Positive Lead Measurement / Action Negative Lead
      C929-3   C2280C-14



Is the resistance less than 3 ohms?

Yes GO to B7
No REPAIR the circuit.


B7   CHECK THE COURTESY LAMP VOLTAGE CIRCUIT FOR A SHORT TO GROUND
  • Disconnect: Rear Interior Lamp C932A and C932B (without map lamps).
  • Disconnect: Rear Interior Lamp C932 (with map lamps).
  • Disconnect: Cargo Lamp C489.
  • Disconnect: Glove Compartment Lamp C254.
  • Measure:


    Positive Lead Measurement / Action Negative Lead
      C2280C-14   Ground



Is the resistance greater than 10,000 ohms?

Yes GO to B17
No REPAIR the circuit.


B8   CHECK THE FRONT COURTESY LAMP
  • Close the door.
  • Ignition OFF.
  • Disconnect: Front Interior Lamp C931A and C931B (with overhead console).
  • Disconnect: Front Interior Lamp C931 (with anti-theft).
  • Disconnect: Front Interior Lamp C918 (without overhead console).
  • Disconnect: Front Interior Lamp C929 (with roof opening panel).
  • Ignition ON.
  • Open a door.
  • Measure:

      With Overhead Console


    Positive Lead Measurement / Action Negative Lead
      C931B-1   C931A-1




      With Anti-Theft


    Positive Lead Measurement / Action Negative Lead
      C931-1   C931-2




      Without Overhead Console


    Positive Lead Measurement / Action Negative Lead
      C918-3   C918-1




      With Roof Opening Panel


    Positive Lead Measurement / Action Negative Lead
      C929-3   C929-2



Is the voltage greater than 11 volts?

Yes GO to B9
No GO to B10


B9   CHECK THE FRONT COURTESY LAMP BULB
  • Substitute a known good bulb and recheck the courtesy lamp operation.

Does the front courtesy lamp operate correctly?

Yes REMOVE the known good bulb. INSTALL a new front courtesy lamp bulb.
No INSTALL a new front interior lamp.


B10   CHECK THE FRONT COURTESY LAMP GROUND CONTROLLED CIRCUIT
  • Ignition OFF.
  • Disconnect: BCM C2280C.
  • Measure:

      With Overhead Console


    Positive Lead Measurement / Action Negative Lead
      C931A-1   C2280C-5




      With Anti-Theft


    Positive Lead Measurement / Action Negative Lead
      C931-2   C2280C-5




      Without Overhead Console


    Positive Lead Measurement / Action Negative Lead
      C918-1   C2280C-5




      With Roof Opening Panel


    Positive Lead Measurement / Action Negative Lead
      C929-2   C2280C-5



Is the resistance less than 3 ohms?

Yes GO to B17
No REPAIR the circuit.


B11   CHECK THE REAR COURTESY LAMP
  • Close the door.
  • Ignition OFF.
  • Disconnect: Rear Interior Lamp C932A and C932B (without map lamps).
  • Disconnect: Rear Interior Lamp C932 (with map lamps).
  • Ignition ON.
  • Open a door.
  • Measure:

      Without Map Lamps


    Positive Lead Measurement / Action Negative Lead
      C932A-1   C932B-1




      With Map Lamps


    Positive Lead Measurement / Action Negative Lead
      C932-3   C932-1



Is the voltage greater than 11 volts?

Yes GO to B12
No GO to B13


B12   CHECK THE REAR COURTESY LAMP BULB
  • Substitute a known good bulb and recheck the courtesy lamp operation.

Does the front courtesy lamp operate correctly?

Yes REMOVE the known good bulb. INSTALL a new rear courtesy lamp bulb.
No INSTALL a new rear interior lamp.


B13   CHECK THE REAR COURTESY LAMP GROUND CONTROLLED CIRCUIT
  • Ignition OFF.
  • Disconnect: BCM C2280C.
  • Measure:

      Without Map Lamps


    Positive Lead Measurement / Action Negative Lead
      C932B-1   C2280C-5




      With Map Lamps


    Positive Lead Measurement / Action Negative Lead
      C932-1   C2280C-5



Is the resistance less than 3 ohms?

Yes GO to B17
No REPAIR the circuit.


B14   BYPASS THE BCM (BODY CONTROL MODULE) GROUND CONTROL
  • Ignition OFF.
  • Disconnect: BCM C2280C.
  • Connect a fused jumper wire:


    Positive Lead Measurement / Action Negative Lead
      C2280C-5   Ground





    Positive Lead Measurement / Action Negative Lead
      C2280C-14 Battery Positive


  • Ignition ON.
  • Open any door.

Do the courtesy lamps illuminate?

Yes REMOVE the fused jumper wire. GO to B17
No REMOVE the fused jumper wire. GO to B15


B15   CHECK THE COURTESY LAMP GROUND CONTROLLED CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition OFF.
  • Disconnect: Front Interior Lamp C931A and C931B (with overhead console).
  • Disconnect: Front Interior Lamp C931 (with anti-theft).
  • Disconnect: Front Interior Lamp C918 (without overhead console).
  • Disconnect: Front Interior Lamp C929 (with roof opening panel).
  • Ignition ON.
  • Measure:


    Positive Lead Measurement / Action Negative Lead
      C2280C-5   Ground



Is any voltage present?

Yes REPAIR the circuit
No GO to B16


B16   CHECK THE COURTESY LAMP GROUND CONTROLLED CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Measure:

      With Overhead Console


    Positive Lead Measurement / Action Negative Lead
      C931A-1   C2280C-5




      With Anti-Theft


    Positive Lead Measurement / Action Negative Lead
      C931-2   C2280C-5




      Without Overhead Console


    Positive Lead Measurement / Action Negative Lead
      C918-1   C2280C-5




      With Roof Opening Panel


    Positive Lead Measurement / Action Negative Lead
      C929-2   C2280C-5



Is the resistance less than 5 ohms?

Yes GO to B17
No REPAIR the circuit.


B17   CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
  • Disconnect and inspect all BCM connectors.
  • Repair:
    • corrosion (install new connector or terminals – clean module pins)
    • damaged or bent pins – install new terminals/pins
    • pushed-out pins – install new pins as necessary
  • Reconnect the BCM connectors. Make sure they seat and latch correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?

Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new BCM .
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. CLEAR the Diagnostic Trouble Codes (DTCs).



All The Courtesy Lamps Stay On Continuously


Refer to Wiring Diagrams Cell 89 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Interior Lighting - System Operation and Component Description (417-02 Interior Lighting, Description and Operation).

Possible Sources



  DTC Fault Trigger Conditions


  DTC Description Fault Trigger Conditions
B1175:92 Drivers Door Ajar Switch: Performance or Incorrect Operation An on-demand DTC that sets when the BCM detects an open from the left front door ajar circuit during the BCM self-test.
B1176:92 Passenger Door Ajar Switch: Performance or Incorrect Operation An on-demand DTC that sets when the BCM detects an open from the right front door ajar circuit during the BCM self-test.
B11E9:92 Left Rear Door Ajar Switch: Performance or Incorrect Operation An on-demand DTC that sets when the BCM detects an open from the left rear door ajar circuit during the BCM self-test.
B11EA:92 Right Rear Door Ajar Switch: Performance or Incorrect Operation An on-demand DTC that sets when the BCM detects an open from the right rear door ajar circuit during the BCM self-test.



PINPOINT TEST C : ALL THE COURTESY LAMPS STAY ON CONTINUOUSLY
C1   CHECK THE DOOR AJAR SWITCH PARAMETER IDENTIFICATIONS (PIDS)
  • Ignition ON.
  • Using a scan tool, view BCM Parameter Identifications (PIDs).
  • Monitor the BCM DOOR_SW_DRVR, DOOR_SW_PSGR, DOOR_SW_LR and DOOR_SW_RR Parameter Identifications (PIDs) while opening and closing all the doors.

Do all the door ajar switch PID values agree with the door positions?

Yes GO to C5
No GO to C2


C2   BYPASS THE SUSPECT DOOR LATCH
  • Disconnect: Suspect door switch.
  • Connect a fused jumper wire:

      LH Front Door Ajar Switch


    Positive Lead Measurement / Action Negative Lead
      C525-3   C525-5




      RH Front Door Ajar Switch


    Positive Lead Measurement / Action Negative Lead
      C609-6   C609-4




      LH Rear Door Ajar Switch


    Positive Lead Measurement / Action Negative Lead
      C705-3   C705-5




      RH Rear Door Ajar Switch


    Positive Lead Measurement / Action Negative Lead
      C805-6   C805-4


  • Using a scan tool, view BCM Parameter Identifications (PIDs).
  • Monitor the BCM DOOR_SW_DRVR, DOOR_SW_PSGR, DOOR_SW_LR and DOOR_SW_RR Parameter Identifications (PIDs).

Does the PID indicate the door in question is closed?

Yes REMOVE the fused jumper wire. For a front door, INSTALL a new front door latch.
REFER to: Front Door Latch (501-14 Handles, Locks, Latches and Entry Systems, Removal and Installation).

REMOVE the fused jumper wire. For a rear door, INSTALL a new rear door latch.
REFER to: Rear Door Latch (501-14 Handles, Locks, Latches and Entry Systems, Removal and Installation).
No REMOVE the fused jumper wire. GO to C3


C3   BYPASS THE DOOR LATCH GROUND CIRCUIT
  • Connect a fused jumper wire:

      LH Front Door Ajar Switch


    Positive Lead Measurement / Action Negative Lead
      C525-3   Ground




      RH Front Door Ajar Switch


    Positive Lead Measurement / Action Negative Lead
      C609-6   Ground




      LH Rear Door Ajar Switch


    Positive Lead Measurement / Action Negative Lead
      C705-3   Ground




      RH Rear Door Ajar Switch


    Positive Lead Measurement / Action Negative Lead
      C805-6   Ground


  • Monitor the BCM DOOR_SW_DRVR, DOOR_SW_PSGR, DOOR_SW_LR and DOOR_SW_RR Parameter Identifications (PIDs).

Does the PID indicate the door in question is closed?

Yes REMOVE the fused jumper wire. REPAIR door latch ground circuit in question for an open.
No REMOVE the fused jumper wire. GO to C4


C4   CHECK THE SUSPECT DOOR AJAR SWITCH INPUT CIRCUIT FOR AN OPEN
  • Disconnect: BCM C2280G.
  • Measure:

      LH Front Door Ajar Switch


    Positive Lead Measurement / Action Negative Lead
      C525-3   C2280G-19




      RH Front Door Ajar Switch


    Positive Lead Measurement / Action Negative Lead
      C609-6   C2280G-20




      LH Rear Door Ajar Switch


    Positive Lead Measurement / Action Negative Lead
      C705-3   C2280G-21




      RH Rear Door Ajar Switch


    Positive Lead Measurement / Action Negative Lead
      C805-6   C2280G-22



Is the resistance less than 3 ohms?

Yes GO to C7
No REPAIR the door ajar input circuit in question.


C5   ISOLATE THE BCM (BODY CONTROL MODULE)
  • Ignition OFF.
  • Disconnect: BCM C2280C.
  • Ignition ON.

Do the interior courtesy lamps continue to illuminate?

Yes GO to C6
No GO to C7


C6   CHECK THE INTERIOR COURTESY LAMP GROUND CONTROLLED CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect: Front Interior Lamp C931A and C931B (with overhead console).
  • Disconnect: Front Interior Lamp C931 (with anti-theft).
  • Disconnect: Front Interior Lamp C918 (without overhead console).
  • Disconnect: Front Interior Lamp C929 (with roof opening panel).
  • Measure:


    Positive Lead Measurement / Action Negative Lead
      C2280C-5   Ground



Is the resistance greater than 10,000 ohms?

Yes INSTALL a new LH front/front interior lamp.
No REPAIR the circuit.


C7   CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
  • Disconnect and inspect all BCM connectors.
  • Repair:
    • corrosion (install new connector or terminals – clean module pins)
    • damaged or bent pins – install new terminals/pins
    • pushed-out pins – install new pins as necessary
  • Reconnect the BCM connectors. Make sure they seat and latch correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?

Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new BCM .
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. CLEAR the Diagnostic Trouble Codes (DTCs).



The Luggage Compartment/Cargo Lamp Is Inoperative Or On Continuously


Refer to Wiring Diagrams Cell 89 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Interior Lighting - System Operation and Component Description (417-02 Interior Lighting, Description and Operation).

Possible Sources


PINPOINT TEST D : THE LUGGAGE COMPARTMENT/CARGO LAMP IS INOPERATIVE OR ON CONTINUOUSLY
D1   DETERMINE IF THE LAMP IS ON WITH THE LIFTGATE/LUGGAGE COMPARTMENT LID CLOSED
  • Ignition ON.
  • Make sure the liftgate or luggage compartment lid is fully latched and observe the cargo lamp.

Is the cargo lamp illuminated?

Yes GO to D2
No GO to D3


D2   CHECK THE CARGO LAMP GROUND CIRCUIT FOR A SHORT TO GROUND
  • Disconnect: Liftgate/Luggage Compartment Lid Latch C4223.

Does the cargo lamp continue to illuminate?

Yes REPAIR the circuit.
No For a 4-door vehicle, INSTALL a new luggage compartment lid latch.
REFER to: Luggage Compartment Lid Latch (501-14 Handles, Locks, Latches and Entry Systems, Removal and Installation).

For a 5-door vehicle, INSTALL a new liftgate latch.
REFER to: Liftgate Latch (501-14 Handles, Locks, Latches and Entry Systems, Removal and Installation).


D3   CHECK THE OPERATION OF THE DEMAND LAMPS
  • Activate and observe all the interior demand lamps.

Do the interior demand lamps operate correctly?

Yes GO to D4
No GO to Pinpoint Test E


D4   CHECK FOR VOLTAGE TO THE CARGO LAMP
  • Disconnect: Cargo Lamp C489.
  • Ignition ON.
  • Measure:


    Positive Lead Measurement / Action Negative Lead
      C489-1   Ground



Is the voltage greater than 11 volts?

Yes GO to D5
No REPAIR the cargo lamp voltage supply circuit for an open.


D5   ISOLATE THE CARGO LAMP BULB
  • Measure:


    Positive Lead Measurement / Action Negative Lead
      C489-1   C489-2



Is the voltage greater than 11 volts?

Yes INSTALL a new cargo lamp bulb.
No GO to D6


D6   CHECK THE CARGO LAMP GROUND CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect: Liftgate/Luggage Compartment Lid Latch C4223.
  • Ignition ON.
  • Connect a fused jumper wire:


    Positive Lead Measurement / Action Negative Lead
      C4223-4   Ground



Does the cargo lamp illuminate?

Yes REMOVE the fused jumper wire. GO to D7
No REMOVE the fused jumper wire. REPAIR the circuit.


D7   CHECK THE LIFTGATE LATCH GROUND CIRCUIT FOR AN OPEN
  • Connect a fused jumper wire:


    Positive Lead Measurement / Action Negative Lead
      C4223-4   C4223-2



Does the cargo lamp illuminate?

Yes REMOVE the fused jumper wire.
For a 4-door vehicle, INSTALL a new luggage compartment lid latch.
REFER to: Luggage Compartment Lid Latch (501-14 Handles, Locks, Latches and Entry Systems, Removal and Installation).

For a 5-door vehicle, INSTALL a new liftgate latch.
REFER to: Liftgate Latch (501-14 Handles, Locks, Latches and Entry Systems, Removal and Installation).
No REMOVE the fused jumper wire. REPAIR the circuit.



One Or More Demand Lamps Are Inoperative


Refer to Wiring Diagrams Cell 89 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Interior Lighting - System Operation and Component Description (417-02 Interior Lighting, Description and Operation).

Possible Sources

Visual Inspection and Diagnostic Pre-checks


PINPOINT TEST E : ONE OR MORE DEMAND LAMPS ARE INOPERATIVE
E1   CHECK THE COURTESY LAMP OPERATION
  • Ignition ON.
  • Open any door and observe the interior courtesy lamps.

Do the interior courtesy lamps illuminate?

Yes If the cargo lamp is inoperative, GO to Pinpoint Test D
If the front overhead or map lamp is inoperative, GO to E4
If the rear overhead or map lamp is inoperative, GO to E5
If the glove compartment lamp is inoperative, GO to E2
No GO to Pinpoint Test B


E2   CHECK THE GLOVE COMPARTMENT LAMP VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect: Glove Compartment Lamp C254.
  • Ignition ON.
  • Measure:


    Positive Lead Measurement / Action Negative Lead
      C254-1   Ground



Is the voltage greater than 11 volts?

Yes GO to E3
No REPAIR the circuit.


E3   CHECK THE GLOVE COMPARTMENT LAMP GROUND CIRCUIT FOR AN OPEN
  • Measure:


    Positive Lead Measurement / Action Negative Lead
      C254-1   C254-2



Is the voltage greater than 11 volts?

Yes INSTALL a new glove compartment lamp.
No REPAIR the circuit.


E4   CHECK THE FRONT INTERIOR LAMP GROUND CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect: Front Interior Lamp C931A and C931B (with overhead console).
  • Disconnect: Front Interior Lamp C931 (with anti-theft).
  • Disconnect: Front Interior Lamp C918 (without overhead console).
  • Disconnect: Front Interior Lamp C929 (with roof opening panel).
  • Ignition ON.
  • Measure:

      With Overhead Console


    Positive Lead Measurement / Action Negative Lead
      C931A-2   Ground




      With Anti-Theft


    Positive Lead Measurement / Action Negative Lead
      C931-3   Ground




      Without Overhead Console


    Positive Lead Measurement / Action Negative Lead
      C918-2   Ground




      With Roof Opening Panel


    Positive Lead Measurement / Action Negative Lead
      C929-4   Ground



Is the resistance less than 3 ohms?

Yes INSTALL a new interior lamp for the lamp in question.
No REPAIR the circuit.


E5   CHECK THE REAR INTERIOR LAMP GROUND CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect: Rear Interior Lamp C932A and C932B (without map lamps).
  • Disconnect: Rear Interior Lamp C932 (with map lamps).
  • Ignition ON.
  • Measure:

      Without Map Lamps


    Positive Lead Measurement / Action Negative Lead
      C932B-2   Ground




      With Map Lamps


    Positive Lead Measurement / Action Negative Lead
      C932-2   Ground



Is the resistance less than 3 ohms?

Yes INSTALL a new interior lamp for the lamp in question.
No REPAIR the circuit.



The Battery Saver Does Not Deactivate After Timeout


Refer to Wiring Diagrams Cell 89 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Interior Lighting - System Operation and Component Description (417-02 Interior Lighting, Description and Operation).

Possible Sources


PINPOINT TEST F : THE BATTERY SAVER DOES NOT DEACTIVATE AFTER TIMEOUT
F1   CHECK THE DEMAND LAMP VOLTAGE SUPPLY CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition OFF.
  • Disconnect: BCM C2280C.
  • Turn any demand (map or glove compartment) lamp on.

Does the demand lamp turn on?

Yes REPAIR the circuit.
No GO to F2


F2   CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
  • Disconnect and inspect all BCM connectors.
  • Repair:
    • corrosion (install new connector or terminals – clean module pins)
    • damaged or bent pins – install new terminals/pins
    • pushed-out pins – install new pins as necessary
  • Reconnect the BCM connectors. Make sure they seat and latch correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?

Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new BCM .
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. CLEAR the Diagnostic Trouble Codes (DTCs).



The Ambient Lighting Is Inoperative


Refer to Wiring Diagrams Cell 89 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Interior Lighting - System Operation and Component Description (417-02 Interior Lighting, Description and Operation).

Possible Sources


PINPOINT TEST G : THE AMBIENT LIGHTING IS INOPERATIVE
G1   CHECK FOR VOLTAGE TO THE AMBIENT LIGHTING MODULE
  • Ignition OFF.
  • Disconnect: Ambient Lighting Module C3347.
  • Ignition ON.
  • Measure:


    Positive Lead Measurement / Action Negative Lead
      C3347-1   Ground



Is the voltage greater than 11 volts?

Yes GO to G4
No GO to G2


G2   CHECK THE AMBIENT LIGHTING MODULE VOLTAGE SUPPLY CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect: BCM C2280E.
  • Measure:


    Positive Lead Measurement / Action Negative Lead
      C3347-1   Ground



Is the resistance greater than 10,000 ohms?

Yes GO to G3
No REPAIR the circuit.


G3   CHECK THE AMBIENT LIGHTING MODULE VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
  • Measure:


    Positive Lead Measurement / Action Negative Lead
      C3347-1   C2280E-23



Is the resistance less than 3 ohms?

Yes GO to G11
No REPAIR the circuit.


G4   CHECK THE AMBIENT LIGHTING SWITCH OUTPUT CIRCUIT
  • While pressing and releasing the ambient lighting switch, measure:


    Positive Lead Measurement / Action Negative Lead
      C3347-2   Ground



Is the voltage greater than 11 volts with the switch pressed and 0 volts with the switch released?

Yes GO to G5
No If voltage is always present, GO to G7
If no voltage is present,GO to G8


G5   CHECK THE AMBIENT LIGHTING MODULE GROUND CIRCUIT FOR AN OPEN
  • Measure:


    Positive Lead Measurement / Action Negative Lead
      C3347-1   C3347-8



Is the voltage greater than 11 volts?

Yes GO to G6
No REPAIR the circuit.


G6   CHECK THE AMBIENT LIGHTING HARNESS
  • Ignition OFF.
  • Using the diode check feature, measure:


    Positive Lead Measurement / Action Negative Lead
      C3347-5   C3347-4
      C3347-6   C3347-4
      C3347-7   C3347-4



Does the meter indicate the circuit is good?

Yes GO to G10
No REPAIR the circuit or INSTALL a new ambient lighting harness.


G7   CHECK THE AMBIENT LIGHTING SWITCH OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition OFF.
  • Disconnect: Ambient Lighting Switch C2401.
  • Ignition ON.
  • Measure:


    Positive Lead Measurement / Action Negative Lead
      C3347-2   Ground



Is any voltage present?

Yes REPAIR the circuit.
No INSTALL a new ambient lighting/heated seat switch.


G8   CHECK THE AMBIENT LIGHTING SWITCH VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Connect: Ambient Lighting Module C3347.
  • Disconnect: Ambient Lighting Switch C2401.
  • Ignition ON.
  • Measure:


    Positive Lead Measurement / Action Negative Lead
      C2401-2   Ground



Is the voltage greater than 11 volts?

Yes GO to G9
No REPAIR the circuit.


G9   BYPASS THE AMBIENT LIGHTING SWITCH
  • Connect and remove a fused jumper wire:


    Positive Lead Measurement / Action Negative Lead
      C2401-1   C2401-2



Do the ambient Light Emitting Diodes (LEDs) illuminate and cycle through a color change each time the jumper wire is connected and removed?

Yes INSTALL a new ambient lighting/heated seat switch.
No REPAIR the ambient lighting switch ground circuit for an open.


G10   CHECK FOR CORRECT AMBIENT LIGHTING MODULE OPERATION
  • Disconnect and inspect the ambient lighting module connector.
  • Repair:
    • corrosion (install new connector or terminals – clean module pins)
    • damaged or bent pins – install new terminals/pins
    • pushed-out pins – install new pins as necessary
  • Reconnect the ambient lighting module connector. Make sure it seats and latches correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?

Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new ambient lighting module.
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. CLEAR the Diagnostic Trouble Codes (DTCs).


G11   CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
  • Disconnect and inspect all BCM connectors.
  • Repair:
    • corrosion (install new connector or terminals – clean module pins)
    • damaged or bent pins – install new terminals/pins
    • pushed-out pins – install new pins as necessary
  • Reconnect the BCM connectors. Make sure they seat and latch correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?

Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new BCM .
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. CLEAR the Diagnostic Trouble Codes (DTCs).



The Ambient Lighting Does Not Cycle Through All Color Variations


Refer to Wiring Diagrams Cell 89 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Interior Lighting - System Operation and Component Description (417-02 Interior Lighting, Description and Operation).

Possible Sources


PINPOINT TEST H : THE AMBIENT LIGHTING DOES NOT CYCLE THROUGH ALL COLOR VARIATIONS
H1   CHECK THE AMBIENT LIGHTING SWITCH OUTPUT CIRCUIT
  • Ignition OFF.
  • Disconnect: Ambient Lighting Module C3347.
  • Ignition ON.
  • While pressing and releasing the ambient lighting switch, measure:


    Positive Lead Measurement / Action Negative Lead
      C3347-2   Ground



Is the voltage greater than 11 volts with the switch pressed and 0 volts with the switch released?

Yes GO to H2
No If voltage is always present, GO to H3
If no voltage is present, GO to H4


H2   CHECK THE AMBIENT LIGHTING HARNESS
  • Ignition OFF.
  • Using the diode check feature, measure:


    Positive Lead Measurement / Action Negative Lead
      C3347-5   C3347-4
      C3347-6   C3347-4
      C3347-7   C3347-4



Does the meter indicate the circuit is good?

Yes GO to H6
No REPAIR the circuit or INSTALL a new ambient lighting harness.


H3   CHECK THE AMBIENT LIGHTING SWITCH OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition OFF.
  • Disconnect: Ambient Lighting Switch C2401.
  • Ignition ON.
  • Measure:


    Positive Lead Measurement / Action Negative Lead
      C3347-2   Ground



Is any voltage present?

Yes REPAIR the circuit.
No INSTALL a new ambient lighting/heated seat switch.


H4   CHECK THE AMBIENT LIGHTING SWITCH VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Connect: Ambient Lighting Module C3347.
  • Disconnect: Ambient Lighting Switch C2401.
  • Ignition ON.
  • Measure:


    Positive Lead Measurement / Action Negative Lead
      C2401-2   Ground



Is the voltage greater than 11 volts?

Yes GO to H5
No REPAIR the circuit.


H5   BYPASS THE AMBIENT LIGHTING SWITCH
  • Connect and remove a fused jumper wire:


    Positive Lead Measurement / Action Negative Lead
      C2401-1   C2401-2



Do the ambient Light Emitting Diodes (LEDs) illuminate and cycle through a color change each time the jumper wire is connected and removed?

Yes INSTALL a new ambient lighting/heated seat switch.
No REPAIR the ambient lighting switch ground circuit for an open.


H6   CHECK FOR CORRECT AMBIENT LIGHTING MODULE OPERATION
  • Disconnect and inspect the ambient lighting module connector.
  • Repair:
    • corrosion (install new connector or terminals – clean module pins)
    • damaged or bent pins – install new terminals/pins
    • pushed-out pins – install new pins as necessary
  • Reconnect the ambient lighting module connector. Make sure it seats and latches correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?

Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new ambient lighting module.
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. CLEAR the Diagnostic Trouble Codes (DTCs).



The Ambient Lighting Is Always On


Refer to Wiring Diagrams Cell 89 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Interior Lighting - System Operation and Component Description (417-02 Interior Lighting, Description and Operation).

Possible Sources


PINPOINT TEST I : THE AMBIENT LIGHTING IS ALWAYS ON
NOTE: Under some conditions, the ambient lighting system is active for up to 10 minutes after the ignition is changed to OFF or a door is opened. Make sure the battery saver feature operates correctly before continuing diagnostics.
I1   CHECK THE BCM (BODY CONTROL MODULE) AMBIENT LIGHTING SYSTEM OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition OFF.
  • Disconnect: BCM C2280E.
  • Ignition ON.

Does the ambient lighting continue to illuminate?

Yes REPAIR the circuit.
No GO to I2


I2   CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
  • Disconnect and inspect all BCM connectors.
  • Repair:
    • corrosion (install new connector or terminals – clean module pins)
    • damaged or bent pins – install new terminals/pins
    • pushed-out pins – install new pins as necessary
  • Reconnect the BCM connectors. Make sure they seat and latch correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?

Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new BCM .
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. CLEAR the Diagnostic Trouble Codes (DTCs).





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