Diagnostic Test
- 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.
- Turn the ignition on.NOTE:
Make sure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts.
- With the scan tool, read the module status.NOTE:
Check the TIPM 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.
No
- Go To 2
- Turn the ignition on.
- CHECK THE (A412) FUSED B (+) CIRCUIT FOR AN OPEN OR SHORT
- Turn the ignition off.
- Disconnect the Intrusion Transceiver Module harness connector.
- Using a 12-volt test light connected to ground, check the (A412) Fused B (+) circuit.
Does the test light illuminate brightly?
Yes
- Go To 3
No
- Repair the open or short in the (A412) Fused B (+) circuit.
- Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
- CHECK THE (Z910) GROUND CIRCUIT FOR AN OPEN
- Using a 12-volt test light connected to 12-volts, check the (Z910) Ground circuit.
Does the test light illuminate brightly?
Yes
- Go To 4
No
- Repair the open in the (Z910) Ground circuit.
- Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
- Using a 12-volt test light connected to 12-volts, check the (Z910) Ground circuit.
- CHECK THE (D265) AND (D264) CAN INTERIOR BUS (125K) CIRCUITS FOR AN OPEN
- Disconnect the TIPM C7 harness connector.
- Measure the resistance of the (D264) CAN Interior Bus (125K) (-) circuit between the TIPM C7 harness connector and the Intrusion Transceiver Module harness connector.
- Measure the resistance of the (D265) CAN Interior Bus (125K) (+) circuit between the TIPM C7 harness connector and the Intrusion Transceiver Module harness connector.
Are the resistances below 5.0 Ohms?
Yes
- Replace the Intrusion Transceiver Module in accordance with the Service Information.
- Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
No
- Repair the open in the (D265) or (D264) CAN Interior Bus (125K) circuit.
- Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .