Diagnostic Test

WARNING: This page is about a different variant/trim than selected.

TEST FOR INTERMITTENT CONDITION
NOTE:
Check for any TSB(s) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing.
1. Turn the ignition on.
  NOTE:
  Make sure the battery voltage is between 10.0 and 16.0 volts.
2. With the scan tool, read the module status.
  NOTE:
  Check the BCM for any active CAN hardware DTCs, perform DTC before proceeding.
  
  Does the scan tool indicate that the module is active on the bus?
  
  Yes
  - The no response condition is 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 BODY VERIFICATION TEST. Refer to BODY CONTROL MODULE (BCM) - BODY VERIFICATION TEST - 500 - ELECTRIC .
  No
  - Go To 2
CHECK THE FUSED B(+) CIRCUIT FOR AN OPEN OR SHORT
1. Turn the ignition off.
2. Disconnect the Tire Pressure Module harness connector.
3. Using a 12-volt test light connected to ground, check the Fused B(+) circuit.
  Does the test light illuminate brightly?
  
  Yes
  - Go To 3
  No
  - Repair the open or short in the Fused B(+) circuit.
  - Perform the TPM VERIFICATION TEST. Refer to STANDARD PROCEDURE - TPM VERIFICATION .
CHECK THE GROUND CIRCUIT FOR AN OPEN
1. Using a 12-volt test light connected to 12-volts, check the Ground circuit.
  Does the test light illuminate brightly?
  
  Yes
  - Go To 4
  No
  - Repair the open in the Ground circuit.
  - Perform the TPM VERIFICATION TEST. Refer to STANDARD PROCEDURE - TPM VERIFICATION .
CHECK THE CAN C BUS CIRCUITS FOR AN OPEN
1. Disconnect the BCM harness connector.
2. Measure the resistance of the CAN C Bus (+) circuit between the BCM harness connector and the Tire Pressure Module harness connector.
3. Measure the resistance of the CAN C Bus (-) circuit between the BCM harness connector and the Tire Pressure Module harness connector.
  Are the resistances below 5.0 Ohms?
  
  Yes
  - Replace the 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 - TPM VERIFICATION .
  No
  - Repair the open in the CAN C Bus (+) or CAN C Bus (-) circuit.
  - Perform the TPM VERIFICATION TEST. Refer to STANDARD PROCEDURE - TPM VERIFICATION .