PINPOINT TEST AD: DTCs U3003:16 AND U3003:17

WARNING: This page is about a different car, the 2014 Lincoln MKX and 2014 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Always tighten the fasteners of the restraints control module (RCM) and impact sensor (if equipped) to the specified torque. Failure to do so may result in incorrect restraint system operation, which increases the risk of personal injury or death in a crash.

NOTE: Use the correct probe adapter(s) from the Flex Probe Kit when taking measurements. Failure to use the correct probe adapter(s) may damage the connector.

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 Supplemental Restraint System (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: 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 Catalog Advantage™ or equivalent to make sure the correct component is being installed. If an incorrect SRS component is installed, DTCs may set.

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

AD1 RETRIEVE ALL CMDTCs IN ALL MODULES
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Self Test - ALL CMDTCs (Continuous Memory).
Is DTC B1317, B1318, B1676, U3003:16 or U3003:17 present in one or more modules AND are any charging system DTCs present in the PCM?
- Yes : REFER to CHARGING SYSTEM to diagnose the charging system.
- No : GO to AD2 .
AD2 TEST BATTERY CONDITION
- Ignition OFF.
- Carry out the Battery Condition Test. Refer to BATTERY, MOUNTING AND CABLES .
Did the battery pass the condition test?
- Yes : If the battery passed the condition test but required a recharge, REFER to CHARGING SYSTEM to diagnose the charging system. CLEAR all Continuous Memory Diagnostic Trouble Codes (CMDTCs). TEST the system for normal operation.
  If the battery passed the condition test and did not require a recharge, GO to AD3 .
- No : INSTALL a new battery. CLEAR all CMDTCs . TEST the SRS for normal operation.
AD3 CHECK THE CHARGING SYSTEM VOLTAGE
NOTE: Do not allow the engine speed to increase above 2, 000 rpm while performing this step or the generator may self-excite and result in default charging system output voltage. If engine speed goes above 2, 000 rpm, turn the vehicle off and restart the engine before performing this step.
- Measure the voltage of the battery:
  - For DTC U3003:17, turn off all accessories and run the engine at 1, 500 rpm for a minimum of 2 minutes while measuring the battery voltage.
  - For DTC U3003:16, turn on headlights and HVAC fan on high and run engine at 1, 500 rpm for a minimum of 2 minutes while measuring the battery voltage.
    
    Fig 1: Checking Charging System Voltage
    Courtesy of FORD MOTOR CO.
Is the voltage between 13 and 15.2 volts?
- Yes : For DTC U3003:16, GO to AD4 .
  For DTC U3003:17, GO to AD6.
- No : REFER to CHARGING SYSTEM to diagnose the charging system. CLEAR all CMDTCs .
  TEST the SRS for normal operation.
AD4 CHECK FOR OPEN IGNITION CIRCUIT TO THE MODULE
- Ignition OFF.
- Depower the SRS . Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Disconnect: OCSM C3159 .
- Disconnect: RCM C310A and C310B .
- For the RCM , measure the resistance between RCM C310A-13 , circuit CBP41 (BU), harness side and Body Control Module (BCM) fuse 41 (7.5A).
  
  Fig 2: Measuring Resistance Between RCM C310A-13, Circuit CBP41 (BU), Harness Side And Body Control Module Fuse 41 (7.5A)
  Courtesy of FORD MOTOR CO.
- For the OCSM , measure the resistance between OCSM C3159-1 , circuit CBP41 (BU), harness side and BCM fuse 41 (7.5A).
  
  Fig 3: Measuring Resistance Between OCSM C3159-1, Circuit CBP41 (BU), Harness Side And BCM Fuse 41 (7.5A)
  Courtesy of FORD MOTOR CO.
Is the resistance less than 1 ohm?
- Yes : GO to AD5 .
- No : REPAIR the circuit as necessary.
  Refer to OEM CONNECTOR REPAIR PROCEDURES for schematic and connector information.
  
  CLEAR all CMDTCs . TEST the SRS for normal operation.
AD5 CHECK FOR OPEN GROUND TO THE MODULE
- Measure the resistance of the ground circuit:
  - For the RCM , measure the resistance between the RCM case and a good ground.
  - For the OCSM , measure the resistance between OCSM C3159-14 , circuit GD143 (BK/VT), harness side and ground.
    
    Fig 4: Measuring Resistance Between OCSM C3159-14, Circuit GD143 (BK/VT), Harness Side And Ground
    Courtesy of FORD MOTOR CO.
Is the resistance less than 1 ohm?
- Yes : GO to AD6 .
- No : For the RCM , VERIFY there is no corrosion between the RCM case and mounting.
  VERIFY the fasteners are clean and tightened to specification with no corrosion.
  
  REPAIR as necessary.
  
  Refer to OEM CONNECTOR REPAIR PROCEDURES for schematic and connector information.
  
  For the OCSM , REPAIR the OCSM ground circuit, as necessary.
  
  CLEAR all CMDTCs . TEST the SRS for normal operation.
AD6 CHECK FOR MODULE OPERATION
- Depower the SRS . Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Disconnect the module with the concern:
  - For the RCM , disconnect C310A and C310B .
  - For the OCSM , disconnect C3159 .
- Check for the following:
  - corrosion
  - damaged pins
  - pushed-out pins
- Connect the RCM C310A and C310B or OCSM C3159 and make sure the connector seats correctly and engage Connector Position Assurance (CPA) lever/lock.
- Repower the SRS . Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Operate the system and verify the concern is still present.
Is the concern still present?
- Yes : INSTALL a new module. REFER to RESTRAINTS CONTROL MODULE (RCM) , OCCUPANT CLASSIFICATION SYSTEM MODULE (OCSM) - MANUAL SEAT TRACK , or OCCUPANT CLASSIFICATION SYSTEM MODULE (OCSM) - POWER SEAT TRACK .
- No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR all CMDTCs . TEST the SRS for normal operation.