501-20B Supplemental Restraint System	2014 Fiesta
Diagnosis and Testing	Procedure revision date: 05/6/2013

Pinpoint Test - DTC: FF

U3003:16 and U3003:17

Refer to Wiring Diagrams Cell 46 for schematic and connector information.

NOTE: Diagnostic Trouble Codes (DTCs) U3003:16 and U3003:17 can be set if the vehicle has been recently jump started, the battery has been recently charged or the battery has been discharged. The battery may become discharged due to excessive load(s) on the charging system from aftermarket accessories or if the battery has been left unattended with the accessories on.

Normal Operation - RCM

The RCM continuously monitors the input voltage for correct operation. If the RCM detects input voltage below 9.5 volts while a fault is present, or below 8.0 volts, whether or not a fault is present, it stores DTC U3003:16 in memory. If the RCM detects input voltage above 16 volts while a fault is present, or above 18 volts, regardless of fault status, it stores DTC U3003:17 in memory. If the RCM sets DTC U3003:16 or U3003:17, it sends a message to the IPC to illuminate the airbag warning indicator.

Normal Operation - OCSM

The OCSM continuously monitors the input voltage for correct operation. If the OCSM detects input voltage below 8 volts, it stores DTC U3003:16 in memory. If the OCSM detects input voltage above 18 volts, it stores DTC U3003:17 in memory. If the OCSM sets DTC U3003:16 or U3003:17, it sends a fault message to the RCM . The RCM then sends a message to the IPC to illuminate the airbag warning indicator.

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Conditions
U3003:16	Battery Voltage: Circuit Voltage Below Threshold	This DTC sets if the RCM detects voltage below 9.5 volts with a SRS fault or below 8 volts, whether or not a SRS fault exists.
U3003:17	Battery Voltage: Circuit Voltage Above Threshold	This DTC sets if the RCM detects voltage above 16 volts with a SRS fault or above 18 volts without a SRS fault.
U3003:16	Battery Voltage: Circuit Voltage Below Threshold	This DTC sets if the OCSM detects voltage below 8 volts.
U3003:17	Battery Voltage: Circuit Voltage Above Threshold	This DTC sets if the OCSM detects voltage above 18 volts.

Possible Causes

Wiring, terminals or connectors
OCSM
RCM

Visual Inspection and Diagnostic Pre-checks

Inspect for damaged wiring harness(es).
Inspect for loose or damaged connectors.

PINPOINT TEST A : U3003:16 AND U3003:17

NOTE: Most faults are due to connector and/or wiring concerns. Carry out a thorough inspection and verification before proceeding with the pinpoint test.

NOTE: Only disconnect or reconnect SRS components when instructed to do so within a pinpoint test step. Failure to follow this instruction may result in incorrect diagnosis of the SRS .

NOTE: Install new components only when directed to do so in the pinpoint test.

NOTE: Always make sure the correct SRS component is being installed. Parts released for other vehicles may not be compatible even if they appear physically similar. Check the part number listed in the Ford parts catalog to make sure the correct component is being installed. If an incorrect SRS component is installed, Diagnostic Trouble Codes (DTCs) may set.

NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

A1 RETRIEVE ALL CONTINUOUS MEMORY DIAGNOSTIC TROUBLE CODES (CMDTCS) IN ALL MODULES

WARNING: Before beginning any service procedure in this section, refer to Safety Warnings in section 100-00 General Information. Failure to follow this instruction may result in serious personal injury.

REFER to: Safety Belt and Supplemental Restraint System (SRS) Health and Safety Precautions (100-00 General Information, Description and Operation).

Ignition ON.

Using a diagnostic scan tool, retrieve ALL Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Is DTC B1317, B1318, B1676, U3003:16 or U3003:17 present in one or more modules AND are any charging system Diagnostic Trouble Codes (DTCs) present in the PCM ?

Yes

DIAGNOSE the charging system.
REFER to: Charging System - 1.6L EcoBoost (132kW/180PS) - Sigma (414-00 Charging System - General Information, Diagnosis and Testing).
REFER to: Charging System - 1.6L Duratec-16V Ti-VCT (88kW/120PS) - Sigma (414-00 Charging System - General Information, Diagnosis and Testing).

GO to A2

A2 TEST BATTERY CONDITION

Ignition OFF.

Carry out the Battery Condition Test.
REFER to: Battery (414-01 Battery, Mounting and Cables, Diagnosis and Testing).

Did the battery pass the condition test?

Yes

If the battery passed the condition test but required a recharge, DIAGNOSE the charging system.
REFER to: Charging System - 1.6L EcoBoost (132kW/180PS) - Sigma (414-00 Charging System - General Information, Diagnosis and Testing).
REFER to: Charging System - 1.6L Duratec-16V Ti-VCT (88kW/120PS) - Sigma (414-00 Charging System - General Information, Diagnosis and Testing).
CLEAR all Continuous Memory Diagnostic Trouble Codes (CMDTCs).
If the battery passed the condition test and did not require a recharge, GO to A3

No	INSTALL a new battery. REFER to: Battery (414-01 Battery, Mounting and Cables, Removal and Installation). CLEAR all Continuous Memory Diagnostic Trouble Codes (CMDTCs).

A3 CHECK THE CHARGING SYSTEM VOLTAGE

Start the engine.

Measure the voltage of the battery.

For DTC U3003:17, turn off all accessories while measuring the battery voltage.

For DTC U3003:16, turn on headlights and HVAC fan on high while measuring the battery voltage.

Is the voltage between 13 and 15.2 volts?

Yes

For U3003:16, GO to A4
For U3003:17, GO to A6

A4 CHECK FOR OPEN IGNITION CIRCUIT TO THE MODULE

Ignition OFF.

Depower the SRS . Refer to
REFER to: Supplemental Restraint System (SRS) Depowering and Repowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect the module with the concern:
- For the RCM , disconnect C310A and C310B.
- For the OCSM , disconnect C3159.

For the , measure:

Positive Lead	Measurement / Action	Negative Lead
C310A-19		CJB Fuse 20 (10A)

For the , measure:

Positive Lead	Measurement / Action	Negative Lead
C3159-1		CJB Fuse 4 (7.5A)

Is the resistance less than 1 ohm?

Yes

GO to A5

No	REPAIR the circuit as necessary. Refer to Wiring Diagrams Cell 5 for schematic and connector information. CLEAR all Continuous Memory Diagnostic Trouble Codes (CMDTCs).

A5 CHECK FOR OPEN GROUND TO THE MODULE

For the , measure:

Positive Lead	Measurement / Action	Negative Lead
RCM mounting bracket		Ground

For the , measure:

Positive Lead	Measurement / Action	Negative Lead
C3159-4		Ground

Is the resistance less than 1 ohm?

Yes

GO to A6

For the , VERIFY there is no corrosion between the and the mounting surface. VERIFY the fasteners are clean and tightened to specification with no corrosion. REPAIR as necessary.
Refer to Wiring Diagrams Cell 5 for schematic and connector information.

For the , REPAIR the circuit.
Refer to Wiring Diagrams Cell 5 for schematic and connector information.
CLEAR all Continuous Memory Diagnostic Trouble Codes (CMDTCs).

A6 CHECK FOR MODULE OPERATION

Ignition OFF.

Depower the SRS .
REFER to: Supplemental Restraint System (SRS) Depowering and Repowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect the module with the concern:
- For the RCM , disconnect C310A and C310B (if not previously disconnected).
- For the OCSM , disconnect OCSM C3159 (if not previously disconnected).

Check for the following:
- 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

Connect the module with the concern:
- For the RCM , connect C310A and C310B. Make sure the connector seats correctly and engages the Connector Position Assurance (CPA) lever/lock.
- For the OCSM , connect C3159. Make sure the connector seats correctly.

Repower the SRS . Do not prove out the SRS at this time.
REFER to: Supplemental Restraint System (SRS) Depowering and Repowering (501-20B Supplemental Restraint System, General Procedures).

Operate the system and verify the concern is still present.

Is the concern still present?

Yes

CHECK for any applicable Technical Service Bulletins (TSBs). If a exists for this concern, DISCONTINUE this test and FOLLOW instructions.
If no Technical Service Bulletins (TSBs) address this concern, and U3003:16 or U3003:17 was present in the , INSTALL a new . REFER to
REFER to: Restraints Control Module (RCM) (501-20B Supplemental Restraint System, Removal and Installation).

If no Technical Service Bulletins (TSBs) address this concern, and U3003:16 or U3003:17 was present in the , INSTALL a new .
REFER to: Occupant Classification System (OCS) Sensor (501-20B Supplemental Restraint System, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR all Continuous Memory Diagnostic Trouble Codes (CMDTCs).