Pinpoint Test AF - DTC: U3003:16 and U3003:17

Refer to Supplemental Restraint System for schematic and connector information.

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 

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 

1. WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.
2. NOTE: Most faults are due to connector and/or wiring concerns. Carry out a thorough inspection and verification before proceeding with the pinpoint test.
3. 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.
4. NOTE: Install new components only when directed to do so in the pinpoint test.
5. 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.
6. NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.
7. A1 RETRIEVE ALL CONTINUOUS MEMORY DIAGNOSTIC TROUBLE CODES (CMDTCS) IN ALL MODULES
   
   
   WARNING: Before beginning any service procedure, refer to Safety Warnings in General Information. Failure to follow this instruction may result in serious personal injury.
   • REFER to: Pyrotechnic Device Health and Safety Precautions .
   • 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 - 2.5L Duratec (125kW/170PS) .

   No

   GO to  A2

8. A2 TEST BATTERY CONDITION
   
   
   • Ignition OFF.
   • Carry out the Battery Condition Test. Refer to: Battery .

   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 - 2.5L Duratec (125kW/170PS) . 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 - 2.5L Duratec (125kW/170PS) . CLEAR all Continuous Memory Diagnostic Trouble Codes (CMDTCs).

9. 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 DTC U3003:16, GO to  A4. For DTC U3003:17, GO to  A6

   No	DIAGNOSE the charging system. Refer to: Charging System - 2.5L Duratec (125kW/170PS) . CLEAR all Continuous Memory Diagnostic Trouble Codes (CMDTCs).

10. A4 CHECK FOR OPEN IGNITION CIRCUIT TO THE MODULE
    
    
    • Ignition OFF.
    • Depower the SRS. Refer to: Supplemental Restraint System (SRS) Depowering .
    • Disconnect the module with the concern:
      • For the RCM, disconnect C310A and C310B .
      • For the OCSM, disconnect C3159 .

    • For the RCM, measure:

      Positive Lead	Measurement / Action	Negative Lead
      C310A-19	Courtesy of FORD MOTOR COMPANY	BCM Fuse 86 (10A)

    • For the OCSM, measure:

      Positive Lead	Measurement / Action	Negative Lead
      C3159-1	Courtesy of FORD MOTOR COMPANY	BCM Fuse 86 (10A)

    Is the resistance less than 1 ohm? 

    Yes

    GO to  A5

    No	REPAIR the circuit as necessary. Refer to Connector Repair Procedures for schematic and connector information. CLEAR all Continuous Memory Diagnostic Trouble Codes (CMDTCs).

11. A5 CHECK FOR OPEN GROUND TO THE MODULE
    
    
    • For the RCM, measure:

      Positive Lead	Measurement / Action	Negative Lead
      RCM case	Courtesy of FORD MOTOR COMPANY	Ground

    • For the OCSM, measure:

      Positive Lead	Measurement / Action	Negative Lead
      C3159-4	Courtesy of FORD MOTOR COMPANY	Ground

    Is the resistance less than 1 ohm? 

    Yes

    GO to  A6

    No

    For the RCM, VERIFY there is no corrosion between the RCM and the mounting surface. VERIFY the fasteners are clean and tightened to specification with no corrosion. REPAIR as necessary. Refer to Connector Repair Procedures for schematic and connector information. For the OCSM, REPAIR the circuit. Refer to Connector Repair Procedures for schematic and connector information. CLEAR all Continuous Memory Diagnostic Trouble Codes (CMDTCs).

12. A6 CHECK FOR MODULE OPERATION
    
    
    • Ignition OFF.
    • If not previously directed to do so, depower the SRS. Refer to: Supplemental Restraint System (SRS) Depowering .
    • 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. Refer to: Supplemental Restraint System (SRS) Repowering .

    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, and DTC U3003:16 or U3003:17 was present in the RCM, INSTALL a new RCM. Refer to: Restraints Control Module (RCM) . If no Technical Service Bulletins (TSBs) address this concern, and DTC U3003:16 or U3003:17 was present in the OCSM, INSTALL a new OCSM. Refer to: Occupant Classification System (OCS) Sensor .

    No	The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.