Pinpoint Test AC - DTC: U0100:00

Normal Operation and Fault Conditions 

The RCM uses information contained in messages from the PCM sent on the HS-CAN.

DTC Fault Trigger Conditions 

Possible Causes 

• Network traffic
• PCM
• RCM

PINPOINT TEST A : U0100:00 

1. NOTE: Most faults are due to connector and/or wiring concerns. Carry out a thorough inspection and verification before proceeding with the pinpoint test.
2. 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.
3. 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.
4. A1 VERIFY DIAGNOSTIC SCAN TOOL COMMUNICATION WITH THE PCM (POWERTRAIN CONTROL MODULE)
   
   
   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.
   • Connect the diagnostic scan tool.
   • Check that a vehicle session can be established using the diagnostic scan tool.

   Can a vehicle session be established? 

   Yes

   GO to  A2

   No	To diagnose no communication with the PCM, REFER to: Communications Network .

5. A2 CHECK THE RCM (RESTRAINTS CONTROL MODULE) CONTINUOUS MEMORY DIAGNOSTIC TROUBLE CODES (CMDTCS)
   
   
   • Using a diagnostic scan tool, perform RCM self-test.
   • Using a diagnostic scan tool, clear RCM Diagnostic Trouble Codes (DTCs).
   • Wait 10 seconds.
   • Using a diagnostic scan tool, perform RCM self-test.

   Is DTC U0100:00 retrieved again? 

   Yes

   GO to  A3

   No	The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

6. A3 RETRIEVE THE RECORDED DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE PCM (POWERTRAIN CONTROL MODULE) KOEO (KEY ON, ENGINE OFF) SELF-TEST
   
   
   • Using a diagnostic scan tool, perform PCM self-test.
   • Check for recorded Diagnostic Trouble Codes (DTCs) from the PCM KOEO self-test.

   Is DTC P0562 or P0563 recorded? 

   Yes	DIAGNOSE the PCM Diagnostic Trouble Codes (DTCs). Refer to the appropriate Engine article for the procedure.

   No

   GO to  A4

7. A4 RETRIEVE THE RECORDED DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE RCM (RESTRAINTS CONTROL MODULE) SELF-TEST
   
   
   • Using a diagnostic scan tool, perform RCM self-test.
   • Check for recorded Diagnostic Trouble Codes (DTCs) from the RCM self-test.

   Is DTC U3003:16 or U3003:17 recorded? 

   Yes	REFER to: Pinpoint Test - DTC: AE .

   No

   GO to  A5

8. A5 CHECK FOR DTC (DIAGNOSTIC TROUBLE CODE) U0100:00 SET IN OTHER MODULES OTHER THAN THE RCM (RESTRAINTS CONTROL MODULE)
   
   
   • Using a diagnostic scan tool, perform self-test for all modules.

   Is DTC U0100:00 set in the ABS module or BCM? 

   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 PCM. Refer to the appropriate Engine article for the procedure.

   No	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 RCM. Refer to: Airbag Supplemental Restraint System (SRS) .