Pinpoint Test

1. Ignition ON.
2. Verify 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 a network test.
3. Carry out the 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, perform the ABS module self-test.

Is DTC U3003:16 or DTC U3003:17 recorded? 

1. Yes: For DTC U3003:16, REFER to DIAGNOSTIC ROUTINE A : U3003:16.

   For DTC U3003:17, REFER to DIAGNOSTIC ROUTINE P : U3003:17.

2. No: GO to 4  .

1. Using a scan tool, perform the IPC self-test.

Is DTC U3003:16 or DTC U3003:17 recorded? 

1. Yes: For DTC U3003:16, REFER to Diagnostic Routine BD: U3003:16 .

   For DTC U3003:17, REFER to Diagnostic Routine BE: U3003:17 .

2. No: GO to 5  .

1. Clear the DTCs  .
2. Wait 10 seconds.
3. Repeat the IPC self-test.

Is DTC U0121:00 still present? 

1. Yes: INSTALL a new ABS module. REFER to ANTI-LOCK BRAKE SYSTEM (ABS) MODULE . CLEAR the DTCs  . REPEAT the IPC self-test. If DTC U0121:00 is still present, INSTALL a new IPC. REFER to Instrument Panel Cluster (IPC) .
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.