417-01 Exterior Lighting 2014 Fiesta
Diagnosis and Testing Procedure revision date: 05/20/2013

Headlamps

DTC Chart: BCM

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).



  BCM DTC Chart


  DTC Description Action
B1007:92 High-Beam Headlamp Switch: Performance or Incorrect Operation   GO to Pinpoint Test D
B109A:12 High Beam Relay: Circuit Short to Battery   GO to Pinpoint Test B
B109A:14 High Beam Relay: Circuit Short To Ground or Open
B10A6:92 Main Light Switch: Performance or Incorrect Operation   GO to Pinpoint Test C
B1D00:11 Left Low Beam: Circuit Short to Ground   GO to Pinpoint Test A
B1D00:15 Left Low Beam: Circuit Short to Battery or Open
B1D01:11 Right Low Beam: Circuit Short to Ground   GO to Pinpoint Test A
B1D01:15 Right Low Beam: Circuit Short to Battery or Open


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: Headlamps

  Symptom Chart


Condition Possible Sources Actions
A module does not respond to the diagnostic scan tool
  • Fuse
  • Wiring, terminals or connectors
  • Module
 
REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).
The headlamp exit delay feature is inoperative   BCM CHECK the flash-to-pass function. If the flash-to-pass is inoperative, GO to Pinpoint Test E If the flash-to-pass operates, INSTALL a new BCM .
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
One or both low beams is inoperative Refer to the Pinpoint Test VERIFY the bulb(s) are OK. If OK, GO to Pinpoint Test A
One or both high beams is inoperative Refer to the Pinpoint Test VERIFY the bulb(s) are OK. If OK, GO to Pinpoint Test B
The low beams are on continuously Refer to the Pinpoint Test   GO to Pinpoint Test C
The high beams are on continuously Refer to the Pinpoint Test   GO to Pinpoint Test D
The flash-to-pass feature is inoperative Refer to the Pinpoint Test   GO to Pinpoint Test E


Pinpoint Tests

One Or Both Low Beams is Inoperative


Refer to Wiring Diagrams Cell 85 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Exterior Lighting - System Operation and Component Description (417-01 Exterior Lighting, Description and Operation).



  DTC Fault Trigger Conditions


  DTC Description Fault Trigger Conditions
B1D00:11 Left Low Beam: Circuit Short To Ground A continuous and on-demand DTC that sets when the BCM detects a short to ground from the left low beam output circuit.
B1D00:15 Left Low Beam: Circuit Short To Battery Or Open A continuous and on-demand DTC that sets when the BCM detects an open or short to voltage from the left low beam output circuit.
B1D01:11 Right Low Beam: Circuit Short To Ground A continuous and on-demand DTC that sets when the BCM detects a short to ground from the right low beam output circuit.
B1D01:15 Right Low Beam: Circuit Short To Battery Or Open A continuous and on-demand DTC that sets when the BCM detects an open or short to voltage from the right low beam output circuit.


Possible Sources

Visual Inspection and Diagnostic Pre-checks


PINPOINT TEST A : ONE OR BOTH LOW BEAMS IS INOPERATIVE
A1   DETERMINE IF ONE OR BOTH LOW BEAMS ARE INOPERATIVE
  • Place the headlamp switch in the HEADLAMPS ON position.

Are both low beams inoperative?

Yes GO to A7
No GO to A2


A2   CHECK FOR VOLTAGE TO THE HEADLAMP
  • Place the headlamp switch in the OFF position.
  • Disconnect: Inoperative LH Headlamp C1021 or RH Headlamp C1041.
  • Place the headlamp switch in the headlamps on position.
  • Measure:

      LH Headlamp


    Positive Lead Measurement / Action Negative Lead
      C1021-2   Ground




      RH Headlamp


    Positive Lead Measurement / Action Negative Lead
      C1041-2   Ground



Is the voltage greater than 11 volts?

Yes GO to A3
No GO to A5


A3   CHECK THE HEADLAMP GROUND CIRCUIT FOR AN OPEN
  • Measure:

      LH Headlamp


    Positive Lead Measurement / Action Negative Lead
      C1021-2   C1021-7




      RH Headlamp


    Positive Lead Measurement / Action Negative Lead
      C1041-2   C1041-7



Is the voltage greater than 11 volts?

Yes GO to A4
No REPAIR the circuit.


A4   CHECK THE BULB
  • Place the headlamp switch in the off position.
  • Substitute a known good low beam bulb.
  • Place the headlamp switch in the headlamps on position.

Does the inoperative headlamp illuminate?

Yes REMOVE the known good bulb. INSTALL a new bulb.
REFER to: Headlamp Bulb (417-01 Exterior Lighting, Removal and Installation).
No REMOVE the known good bulb. CHECK the internal headlamp harness for open or shorted circuits and damaged or pushed-out pins. If the harness is not OK, REPAIR the harness. If the harness cannot be repaired, INSTALL a new headlamp assembly.
REFER to: Headlamp Assembly (417-01 Exterior Lighting, Removal and Installation).


A5   CHECK THE LOW BEAM SUPPLY CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Place the headlamp switch in the OFF position.
  • Disconnect: BCM C2280A.
  • Measure:

      LH Headlamp


    Positive Lead Measurement / Action Negative Lead
      C1021-2   Ground




      RH Headlamp


    Positive Lead Measurement / Action Negative Lead
      C1041-2   Ground



Is the resistance greater than 10,000 ohms?

Yes GO to A6
No REPAIR the circuit.


A6   CHECK THE LOW BEAM SUPPLY CIRCUIT FOR AN OPEN
  • Measure:

      LH Headlamp


    Positive Lead Measurement / Action Negative Lead
      C1021-2   C2280A-11




      RH Headlamp


    Positive Lead Measurement / Action Negative Lead
      C1041-2   C2280A-7



Is the resistance less than 3 ohms?

Yes GO to A9
No REPAIR the circuit.


A7   CHECK THE BCM (BODY CONTROL MODULE) HEADLAMP SWITCH INPUT
  • Place the headlamp switch in the off position.
  • Using a diagnostic scan tool, view BCM Parameter Identifications (PIDs).
  • Monitor the BCM LOW_BEAM_SW PID .
  • Place the headlamp switch in the headlamps on position.

Does the BCM LOW_BEAM_SW PID change from Off to On?

Yes GO to A9
No GO to A8


A8   CHECK THE HEADLAMP SWITCH HEADLAMPS ON CIRCUIT FOR AN OPEN
  • Place the headlamp switch in the off position.
  • Disconnect: BCM C2280F.
  • Disconnect: Headlamp Switch C205.
  • Measure:


    Positive Lead Measurement / Action Negative Lead
      C205-7   C2280F-5



Is the resistance less than 3 ohms?

Yes CARRY OUT the Headlamp Switch component test.
Refer to Wiring Diagrams Cell 149 for schematic and connector information.

If the headlamp switch tests bad, INSTALL a new headlamp switch.
REFER to: Headlamp Switch (417-01 Exterior Lighting, Removal and Installation).

If the headlamp switch tests good, GO to A9
No REPAIR the circuit.


A9   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.



One Or Both High Beams Is Inoperative


Refer to Wiring Diagrams Cell 85 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Exterior Lighting - System Operation and Component Description (417-01 Exterior Lighting, Description and Operation).



  DTC Fault Trigger Conditions


  DTC Description Fault Trigger Conditions
B109A:12 High Beam Relay: Circuit Short to Battery A continuous and on-demand DTC that sets when the BCM detects a short to voltage from the high beam relay control circuit.
B109A:14 High Beam Relay: Circuit Short To Ground or Open A continuous and on-demand DTC that sets when the BCM detects an open or short to ground from the high beam relay control circuit.


Possible Sources

Visual Inspection and Diagnostic Pre-checks


PINPOINT TEST B : ONE OR BOTH HIGH BEAMS IS INOPERATIVE
B1   CHECK THE LOW BEAM OPERATION
  • Ignition ON.
  • Place the headlamp switch in the headlamps on position and observe the headlamps.
  • Place the LH multifunction switch in the high beam position and observe the headlamps.
  • Place the LH multifunction switch in the low beam position and observe the headlamps.

Do the low beams illuminate?

Yes If an individual high beam is inoperative, VERIFY the BJB fuse 37 (10A) ( LH high beam) or fuse 38 (10A) ( RH high beam) is OK. If OK, GO to B14 If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.
If both high beams are inoperative, VERIFY the BJB fuses 17 (20A) and 21 (7.5A) are OK. If OK, GO to B2 If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.
No GO to Pinpoint Test A


B2   CHECK FOR BCM (BODY CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, perform the BCM self-test.

Is DTC B109A:12 or B109A:14 present?

Yes For DTC B109A:12, GO to B3
For DTC B109A:14, GO to B4
No GO to B7


B3   CHECK THE HIGH BEAM RELAY ENABLE CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition OFF.
  • Disconnect: High Beam Relay.
  • Disconnect: BCM C2280D.
  • Ignition ON.
  • Measure:


    Positive Lead Measurement / Action Negative Lead
      C2280D-3   Ground



Is any voltage present?

Yes REPAIR the circuit.
No GO to B5


B4   CHECK THE HIGH BEAM RELAY ENABLE CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect: High Beam Relay.
  • Disconnect: BCM C2280D.
  • Measure:


    Positive Lead Measurement / Action Negative Lead
      C2280D-3

    High Beam Relay Pin 2



Is the resistance less than 3 ohms?

Yes GO to B5
No REPAIR the circuit.


B5   CHECK THE HIGH BEAM RELAY
  • Ignition OFF.
  • Connect: BCM C2280D.
  • INSTALL a known good relay for the high beam relay.
  • Ignition ON.
  • Place the headlamp switch in the headlamps on position.
  • Place the LH multifunction switch in the high beam position and observe the headlamps.

Do the high beams illuminate?

Yes INSTALL a new high beam relay.
No For DTC B109A:12, GO to B17
For DTC B109A:14, GO to B6


B6   CHECK THE HIGH BEAM RELAY FOR VOLTAGE TO THE COIL
  • Ignition OFF.
  • Disconnect: High Beam Relay.
  • Ignition ON.
  • Measure:


    Positive Lead Measurement / Action Negative Lead

    High Beam Relay Pin 1     		  Ground



Is the voltage greater than 11 volts?

Yes GO to B7
No VERIFY the BJB fuse 21 (7.5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.


B7   CHECK THE BCM (BODY CONTROL MODULE) HIGH BEAM ENABLE OUTPUT
  • Place the headlamp switch in the headlamps on position.
  • Using a diagnostic scan tool, view BCM Parameter Identifications (PIDs).
  • Command the BCM HIGH BEAMS PID On.

Do the high beams illuminate?

Yes GO to B10
No GO to B8


B8   CHECK THE HIGH BEAM RELAY FOR VOLTAGE TO THE SWITCH
  • Ignition OFF.
  • Disconnect: High Beam Relay.
  • Ignition ON.
  • Measure:


    Positive Lead Measurement / Action Negative Lead

    High Beam Relay Pin 3     		  Ground



Is the voltage greater than 11 volts?

Yes GO to B9
No VERIFY the BJB fuse 17 (20A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.


B9   CHECK THE HIGH BEAM RELAY
  • Ignition OFF.
  • Connect: BCM C2280D.
  • INSTALL a known good relay for the high beam relay.
  • Ignition ON.
  • Place the headlamp switch in the headlamps on position.
  • Place the LH multifunction switch in the high beam position.

Do the high beams illuminate?

Yes INSTALL a new high beam relay.
No REPAIR the high beam relay output circuit for an open.


B10   CHECK THE FLASH-TO-PASS FUNCTION
  • Place the headlamp switch in the headlamps on position.
  • Place the LH multifunction switch in the flash-to-pass position.

Do the high beams illuminate?

Yes GO to B12
No GO to B11


B11   CHECK THE LH (LEFT-HAND) MULTIFUNCTION SWITCH GROUND
  • Ignition OFF.
  • Disconnect: LH Multifunction Switch C202.
  • Measure:


    Positive Lead Measurement / Action Negative Lead
      C202-9   Ground



Is the resistance less than 3 ohms?

Yes GO to B12
No REPAIR the circuit.


B12   CHECK THE LH (LEFT-HAND) MULTIFUNCTION SWITCH
  • Ignition OFF.
  • Place the headlamp switch in the headlamps on position.
  • Connect a fused jumper wire:


    Positive Lead Measurement / Action Negative Lead
      C202-9   C202-10



Do the high beams illuminate?

Yes REMOVE the fused jumper wire. INSTALL a new LH multifunction switch.
REFER to: Steering Column Multifunction Switch LH (211-05 Steering Column Switches, Removal and Installation).
No If the high beams and flash-to-pass feature are inoperative, REMOVE the fused jumper wire. GO to B17
If only the high beams feature is inoperative, REMOVE the fused jumper wire. GO to B13


B13   CHECK THE LH (LEFT-HAND) MULTIFUNCTION SWITCH HIGH BEAM CIRCUIT FOR AN OPEN
  • Place the headlamp switch in the off position.
  • Disconnect: BCM C2280F.
  • Measure:


    Positive Lead Measurement / Action Negative Lead
      C202-10   C2280F-13



Is the resistance less than 3 ohms?

Yes GO to B17
No REPAIR the circuit.


B14   CHECK FOR VOLTAGE TO THE HEADLAMP
  • Ignition OFF.
  • Place the headlamp switch in the off position.
  • Disconnect: Inoperative LH Headlamp C1021 or RH Headlamp C1041.
  • Place the headlamp switch in the headlamps on position and the multifunction switch in the high beam position.
  • Measure:

      LH Headlamp


    Positive Lead Measurement / Action Negative Lead
      C1021-4   Ground




      RH Headlamp


    Positive Lead Measurement / Action Negative Lead
      C1041-4   Ground



Is the voltage greater than 11 volts?

Yes GO to B15
No REPAIR the circuit.


B15   CHECK THE HIGH BEAM GROUND CIRCUIT FOR AN OPEN
  • Measure:

      LH Headlamp


    Positive Lead Measurement / Action Negative Lead
      C1021-4   C1021-10




      RH Headlamp


    Positive Lead Measurement / Action Negative Lead
      C1041-4   C1041-10



Is the voltage greater than 11 volts?

Yes GO to B16
No REPAIR the circuit.


B16   CHECK THE BULB
  • Place the headlamp switch in the off position.
  • Substitute a known good high beam bulb.
  • Place the headlamp switch in the headlamps on position and the multifunction switch in the high beam position.

Does the inoperative high beam illuminate?

Yes REMOVE the known good bulb. INSTALL a new bulb.
REFER to: Headlamp Bulb (417-01 Exterior Lighting, Removal and Installation).
No REMOVE the known good bulb. CHECK the internal headlamp harness for open or shorted circuits and damaged or pushed-out pins. If the harness is not OK, REPAIR the harness. If the harness cannot be repaired, INSTALL a new headlamp assembly.
REFER to: Headlamp Assembly (417-01 Exterior Lighting, Removal and Installation).


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.



The Low Beams Are On Continuously


Refer to Wiring Diagrams Cell 85 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Exterior Lighting - System Operation and Component Description (417-01 Exterior Lighting, Description and Operation).



  DTC Fault Trigger Conditions


  DTC Description Fault Trigger Conditions
B10A6:92 Main Light Switch: Performance or Incorrect Operation

A continuous and on-demand DTC that sets when the BCM detects one of the following:

  • more than one input grounded at the same time for greater than 30 seconds.
  • the off input is not grounded during the BCM self-test.
  • the park lamp, headlamps or auto (if equipped) input is grounded during the BCM self-test.
B1D00:15 Left Low Beam: Circuit Short to Battery or Open A continuous and on-demand DTC that sets when the BCM detects an open or short to voltage from the left low beam output circuit.
B1D01:15 Right Low Beam: Circuit Short to Battery or Open A continuous and on-demand DTC that sets when the BCM detects an open or short to voltage from the right low beam output circuit.


Possible Sources

Visual Inspection and Diagnostic Pre-checks


PINPOINT TEST C : THE LOW BEAMS ARE ON CONTINUOUSLY
C1   CHECK FOR BCM (BODY CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition ON.
  • Place the headlamp switch in the off position.
  • Using a diagnostic scan tool, perform the BCM self-test.

Is DTC B10A6:92, B1D00:15 or B1D01:15 present?

Yes For DTC B10A6:92, GO to C2
For DTC B1D00:15 or B1D01:15, GO to C5
No


C2   CHECK THE HEADLAMP SWITCH GROUND CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect: Headlamp Switch C205.
  • Measure:


    Positive Lead Measurement / Action Negative Lead
      C205-3   Ground



Is the resistance less than 3 ohms?

Yes CARRY OUT the Headlamp Switch component test.
Refer to Wiring Diagrams Cell 149 for schematic and connector information.

If the headlamp switch tests bad, INSTALL a new headlamp switch.
REFER to: Headlamp Switch (417-01 Exterior Lighting, Removal and Installation).

If the headlamp switch tests good, GO to C3
No REPAIR the circuit.


C3   CHECK THE HEADLAMP SWITCH CIRCUITS FOR A SHORT TO GROUND
  • Disconnect: BCM C2280F.
  • Measure:


    Positive Lead Measurement / Action Negative Lead
      C205-2   Ground
      C205-4   Ground
      C205-6   Ground
      C205-7   Ground



Are the resistances greater than 10,000 ohms?

Yes GO to C4
No REPAIR the circuit in question.


C4   CHECK THE HEADLAMP SWITCH OFF CIRCUIT FOR AN OPEN
  • Measure:


    Positive Lead Measurement / Action Negative Lead
      C205-6   C2280F-4



Is the resistance less than 3 ohms?

Yes GO to C6
No REPAIR the circuit.


C5   CHECK THE LOW BEAM VOLTAGE SUPPLY CIRCUITS FOR A SHORT TO VOLTAGE
  • Ignition OFF.
  • Disconnect: BCM C2280A.
  • Disconnect: LH Headlamp C1021.
  • Disconnect: RH Headlamp C1041.
  • Ignition ON.
  • Measure:

      LH Headlamp


    Positive Lead Measurement / Action Negative Lead
      C1021-2   Ground




      RH Headlamp


    Positive Lead Measurement / Action Negative Lead
      C1041-2   Ground



Is any voltage present?

Yes REPAIR the circuit in question.
No GO to C6


C6   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.



The High Beams Are On Continuously


Refer to Wiring Diagrams Cell 85 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Exterior Lighting - System Operation and Component Description (417-01 Exterior Lighting, Description and Operation).



  DTC Fault Trigger Conditions


  DTC Description Fault Trigger Conditions
B1007:92 High-Beam Headlamp Switch: Performance or Incorrect Operation An on-demand DTC that sets when the BCM high-beam or flash-to-pass input is grounded during the BCM self-test.
B109A:14 High Beam Relay: Circuit Short To Ground or Open A continuous and on-demand DTC that sets when the BCM detects an open or short to ground from the high beam relay control circuit.


Possible Sources

Visual Inspection and Diagnostic Pre-checks


PINPOINT TEST D : THE HIGH BEAMS ARE ON CONTINUOUSLY
D1   CHECK FOR BCM (BODY CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition ON.
  • Place the headlamp switch in the off position.
  • Using a diagnostic scan tool, perform the BCM self-test.

Is DTC B1007:92 or B109A:14 present?

Yes For DTC B1007:92, GO to D2
For DTC B109A:14, GO to D5
No GO to D7


D2   MONITOR THE BCM (BODY CONTROL MODULE) PARAMETER IDENTIFICATIONS (PIDS)
  • Place the headlamp switch in the off position.
  • Place the LH multifunction switch in the low beam position.
  • Using a diagnostic scan tool, view BCM Parameter Identifications (PIDs).
  • Monitor the BCM HIGH_BEAM_SW and FLASH-to-PASS Parameter Identifications (PIDs).

Do the Parameter Identifications (PIDs) indicate the high beams and the flash-to-pass feature is Off?

Yes GO to D9
No GO to D3


D3   CHECK THE LH (LEFT-HAND) MULTIFUNCTION SWITCH
  • Ignition OFF.
  • Disconnect: LH Multifunction Switch C202.
  • Ignition ON.
  • Place the headlamp switch in the off position.
  • Place the LH multifunction switch in the low beam position.
  • Using a diagnostic scan tool, view BCM Parameter Identifications (PIDs).
  • Monitor the BCM HIGH_BEAM_SW and FLASH-to-PASS Parameter Identifications (PIDs).

Do the Parameter Identifications (PIDs) indicate the high beams and the flash-to-pass feature is Off?

Yes INSTALL a new LH multifunction switch.
REFER to: Steering Column Multifunction Switch LH (211-05 Steering Column Switches, Removal and Installation).
No GO to D4


D4   CHECK THE LH (LEFT-HAND) MULTIFUNCTION SWITCH HIGH BEAM OR FLASH TO PASS CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect: BCM C2280F.
  • Measure:

      High Beam


    Positive Lead Measurement / Action Negative Lead
      C202-10   Ground




      Flash-To-Pass


    Positive Lead Measurement / Action Negative Lead
      C202-5   Ground



Is the resistance greater than 10,000 ohms?

Yes GO to D9
No REPAIR the circuit.


D5   CHECK THE HIGH BEAM RELAY ENABLE CIRCUIT FOR GROUND
  • Ignition OFF.
  • Disconnect: High Beam Relay.
  • Ignition ON.
  • Measure:


    Positive Lead Measurement / Action Negative Lead

    High Beam Relay Pin 1

    High Beam Relay Pin 2



Is any voltage present?

Yes GO to D6
No GO to D9


D6   CHECK THE HIGH BEAM RELAY ENABLE CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect: BCM C2280D.
  • Measure:


    Positive Lead Measurement / Action Negative Lead

    High Beam Relay Pin 2     		  Ground



Is the resistance greater than 10,000 ohms?

Yes GO to D9
No REPAIR the circuit.


D7   CHECK THE HIGH BEAM RELAY
  • Ignition OFF.
  • Disconnect: High Beam Relay.
  • Ignition ON.
  • Place the headlamp switch in the off position.
  • Place the LH multifunction switch in the low beam position.

Do the high beams illuminate?

Yes GO to D8
No INSTALL a new high beam relay.


D8   CHECK THE HIGH BEAM SUPPLY CIRCUITS FOR A SHORT TO VOLTAGE
  • Ignition OFF.
  • Disconnect: LH Headlamp C1021.
  • Disconnect: RH Headlamp C1041.
  • Ignition ON.
  • Measure:

      LH Headlamp


    Positive Lead Measurement / Action Negative Lead
      C1021-4   Ground




      RH Headlamp


    Positive Lead Measurement / Action Negative Lead
      C1041-4   Ground



Is any voltage present?

Yes REPAIR the circuit.
No GO to D9


D9   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.



The Flash-To-Pass Function Is Inoperative

Normal Operation and Fault Conditions


REFER to: Exterior Lighting - System Operation and Component Description (417-01 Exterior Lighting, Description and Operation).

Possible Sources

Visual Inspection and Diagnostic Pre-checks


PINPOINT TEST E : THE FLASH-TO-PASS FUNCTION IS INOPERATIVE
E1   CHECK THE HIGH BEAM OPERATION
  • Ignition ON.
  • Place the headlamp switch in the headlamps on position.
  • Activate and deactivate the high beams using the high beam function of the multifunction switch.

Do the high beams operate correctly?

Yes GO to E2
No GO to Pinpoint Test B


E2   MONITOR THE BCM (BODY CONTROL MODULE) PARAMETER IDENTIFICATIONS (PIDS)
  • Place the headlamp switch in the headlamps on position.
  • Place the LH multifunction switch in the flash-to-pass position.
  • Using a diagnostic scan tool, view BCM Parameter Identifications (PIDs).
  • Monitor the BCM FLASH-to-PASS PID .

Does the FLASH-to-PASS PID indicate on?

Yes GO to E5
No GO to E3


E3   CHECK THE LH (LEFT-HAND) MULTIFUNCTION SWITCH
  • Ignition OFF.
  • Disconnect: LH Multifunction Switch C202.
  • Ignition ON.
  • Place the headlamp switch in the headlamps on position.
  • Connect a fused jumper wire:


    Positive Lead Measurement / Action Negative Lead
      C202-9   C202-5



Do the high beams illuminate?

Yes REMOVE the fused jumper wire. INSTALL a new LH multifunction switch.
REFER to: Steering Column Multifunction Switch LH (211-05 Steering Column Switches, Removal and Installation).
No REMOVE the fused jumper wire. GO to E4


E4   CHECK THE LH (LEFT-HAND) MULTIFUNCTION SWITCH FLASH-TO-PASS CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect: BCM C2280F.
  • Measure:


    Positive Lead Measurement / Action Negative Lead
      C202-5   C2280F-24



Is the resistance less than 3 ohms?

Yes GO to E5
No REPAIR the circuit.


E5   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.





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