Diagnostic Test

CHECK POWERTRAIN CONTROL MODULE (PCM) DTCs
NOTE:
Make sure the battery is fully charged before proceeding.
1. Turn the ignition on.
2. With the scan tool, read PCM DTCs.
  Are there any battery or charging systems DTCs?
  
  Yes
  - Refer to DTC INDEX and perform the appropriate diagnostic procedure.
  No
  - Go To 2
CHECK FOR AN ACTIVE DTC
1. Check for and remove any non-FCC compliant components.
2. With the scan tool, read DTCs and record on the repair order.
3. Start the engine and run for two minutes.
4. With the scan tool, read TPM DTCs.
  Is the DTC active?
  
  Yes
  - Go To 3
  No
  - Go To 5
(A239) FUSED B(+) CIRCUIT OPEN OR HIGH RESISTANCE
1. Turn the ignition off
2. Disconnect the TPM Module harness connector.
3. Turn the ignition on.
4. Using a 12-volt test light connected to ground, check (A239) Fused B(+) circuit in the TPM Module harness connector.
  NOTE:
  The test light must illuminate brightly. Compare the brightness to that of a direct connection to the battery.
  
  Does the test light illuminate brightly?
  
  Yes
  - Go To 4
  No
  - Repair the (A239) Fused B(+) circuit for an open or high resistance.
  - Perform the TPM VERIFICATION TEST. Refer to STANDARD PROCEDURE .
(Z922) GROUND CIRCUIT OPEN OR HIGH RESISTANCE
1. Turn the ignition off
2. Using a 12-volt test light connected to 12-volts, check the (Z922) Ground circuit in the TPM Module harness connector.
  NOTE:
  The test light must illuminate brightly. Compare the brightness to that of a direct connection to the battery.
  
  Does the test light illuminate brightly?
  
  Yes
  - Replace the Tire Pressure Monitoring (TPM) Module in accordance with the Service Information. Refer to MODULE, TIRE PRESSURE MONITORING (TPM), REMOVAL .
  - Perform the TPM VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Repair the (Z922) Ground circuit for an open or high resistance.
  - Perform the TPM VERIFICATION TEST. Refer to STANDARD PROCEDURE .
INTERMITTENT WIRING AND CONNECTORS
1. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
2. Wiggle test the wiring harness and connectors while monitoring the scan tool data relative to this circuit.
3. Look for the data to change or for the DTC to reset during the wiggle test.
4. While monitoring the scan tool data relative to this circuit.
5. Look for the data to change other than as expected or for the DTC to reset.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the TPM VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Test complete. The condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
  - Perform the TPM VERIFICATION TEST. Refer to STANDARD PROCEDURE .