Pinpoint Test
- VERIFY THE CUSTOMER CONCERN
- Ignition ON.
- Verify there is an observable symptom present.
- Is an observable symptom present?
- Yes: GO to step 2 .
- No: The system is operating normally at this time. The Diagnostic Trouble Code (DTC) may have been set due to high network traffic or an intermittent fault condition.
- CHECK THE COMMUNICATION NETWORK
- Using a scan tool, perform network test.
- Does the Anti-Lock Brake System (ABS) module pass the network test?
- Yes: GO to step 3 .
- No: REFER to DIAGNOSTIC ROUTINE B .
- Using a scan tool, perform network test.
- RETRIEVE THE RECORDED Diagnostic Trouble Codes (DTCs) FROM THE Body Control Module (BCM) SELF-TEST
- Using a scan tool, perform BODY CONTROL MODULE (BCM) self-test.
- Check for recorded Body Control Module (BCM) Diagnostic Trouble Codes (DTCs) from the self-test.
- Is Diagnostic Trouble Code (DTC) U3003:16 or Diagnostic Trouble Code (DTC) U3003:17 recorded?
- Yes:
For Diagnostic Trouble Code (DTC) U3003:16, REFER to DIAGNOSTIC ROUTINE H .
For Diagnostic Trouble Code (DTC) U3003:17, REFER to DIAGNOSTIC ROUTINE I .
- No: GO to step 4 .
- CHECK FOR Diagnostic Trouble Codes (DTCs) U3003:16 AND U3003:17 FROM THE Anti-Lock Brake System (ABS) MODULE SELF-TEST
- Using a scan tool, retrieve the continuous memory Diagnostic Trouble Codes (DTCs) from the Anti-Lock Brake System (ABS) module.
- Is Diagnostic Trouble Code (DTC) U3003:16 or Diagnostic Trouble Code (DTC) U3003:17 recorded?
- Yes:
For Diagnostic Trouble Code (DTC) U3003:16, REFER to DIAGNOSTIC ROUTINE A
.
For Diagnostic Trouble Code (DTC) U3003:17, REFER to DIAGNOSTIC ROUTINE P .
- No: GO to step 5 .
- Using a scan tool, retrieve the continuous memory Diagnostic Trouble Codes (DTCs) from the Anti-Lock Brake System (ABS) module.
- RECHECK THE BCM Diagnostic Trouble Codes (DTCs)
- Using a scan tool, clear the Diagnostic Trouble Codes (DTCs). Repeat the Body Control Module (BCM) self-test.
- Is Diagnostic Trouble Code (DTC) U0121:00 still present?
- Yes: GO to step 6 .
- No: The system is operating correctly at this time. The Diagnostic Trouble Code (DTC) may have been set due to high network traffic or an intermittent fault condition.
NOTE: If new modules were installed prior to the Diagnostic Trouble Code (DTC) being set, the module configuration may be incorrectly set during Programmable Module Installation (PMI) or the Programmable Module Installation (PMI) may not have been carried out. - Using a scan tool, clear the Diagnostic Trouble Codes (DTCs). Repeat the Body Control Module (BCM) self-test.
- CHECK FOR Diagnostic Trouble Code (DTC) U0121:00 SET IN OTHER MODULES
- Clear the Diagnostic Trouble Codes (DTCs).
- Ignition OFF.
- Ignition ON.
- Wait 10 seconds.
- Using a scan tool, retrieve the continuous memory Diagnostic Trouble Codes (DTCs) from all modules.
- Is Diagnostic Trouble Code (DTC) U0121:00 set in any other module?
- Yes: INSTALL a new Anti-Lock Brake System (ABS) module. REFER to ANTI-LOCK BRAKE SYSTEM (ABS) MODULE . CLEAR the Diagnostic Trouble Codes (DTCs).
- No: INSTALL a new Body Control Module (BCM). REFER to BODY CONTROL MODULE (BCM) - WITH INTELLIGENT ACCESS (IA) or REFER to BODY CONTROL MODULE (BCM) - WITHOUT INTELLIGENT ACCESS (IA) .