Pinpoint Test

1. Ignition ON.
2. Verify that there is an observable symptom present.

Is an observable symptom present? 

1. Yes: GO to 2  .
2. No: The system is operating normally at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

1. Ignition ON.
2. Using a scan tool, perform network test.

Does the ABS module pass the network test? 

1. Yes: GO to 3  .
2. No: REFER to Diagnostic Routine B: The Anti-Lock Brake System (ABS) Module Does Not Respond To The Scan Tool .

1. Using a scan tool, clear the DTCs  .
2. Operate the system and test the system for normal operation.
3. Using a scan tool, repeat the PAM self-test.

Is DTC U0121:00 still present? 

1. Yes: GO to 4  .
2. 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.

1. Using a scan tool, clear all DTCs  .
2. Ignition OFF.
3. Wait 10 seconds.
4. Using a scan tool, perform self-test.
5. Retrieve the continuous memory DTCs  from all modules.

Is DTC U0121 or DTC U0121:00 set in any module? 

1. Yes: INSTALL a new ABS module. REFER to ANTI-LOCK BRAKE SYSTEM (ABS) MODULE .
2. No: GO to 5  .

1. Disconnect and inspect the PAM connector.
2. Repair:
   • 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
3. Reconnect the PAM connector. Make sure it seats and latches correctly.
4. Operate the system and determine if the concern is still present.

Is the concern still present? 

1. Yes: CHECK OASIS  for any applicable TSBs  . If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSBs  address this concern, INSTALL a new PAM. REFER to PARKING AID MODULE (PAM) .
2. No: The system is operating correctly at this time. Concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.