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.

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. Check for recorded DTCs  from the following modules.
   • ABS module
   • PCM

Are any low or high voltage DTCs recorded? 

1. Yes: For ABS module DTCs U3003:16 and U3003:17:

   REFER to DIAGNOSTIC ROUTINE A : U3003:16,

   REFER to DIAGNOSTIC ROUTINE P : U3003:17.

   For PCM DTC P0562 and P0563:

   For P0563, Refer to DIAGNOSTIC ROUTINE B : System Voltage Low or Battery is Discharged.

   For P0563, Refer to DIAGNOSTIC ROUTINE A : System Voltage High.

2. No: GO to 4  .

1. Using a scan tool, clear all DTCs  .
2. Ignition OFF.
3. Ignition ON.
4. Wait 10 seconds.
5. Using a scan tool, perform the PCM KOEO self-test.

Does the PCM set DTC U0129? 

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

   REFER to POWERTRAIN CONTROL MODULE (PCM) - 2.0L GTDI or POWERTRAIN CONTROL MODULE (PCM) - 3.5L TI-VCT .