*NO RESPONSE FROM TIPM (TOTALLY INTEGRATED POWER MODULE)

For a complete wiring diagram Refer to Section 8W.

Possible Causes

FUSED B (+) CIRCUITS OPEN

FUSED IGNITION SWITCH OUTPUT CIRCUITS OPEN

GROUND CIRCUITS OPEN

DIAGNOSTIC CAN C CIRCUITS OPEN

DIAGNOSTIC CAN C CIRCUITS SHORTED TO GROUND

DIAGNOSTIC CAN C CIRCUITS SHORTED TOGETHER

TOTALLY INTEGRATED POWER MODULE

Diagnostic Test

1.TEST FOR INTERMITTENT CONDITION

NOTE: Ensure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts.

NOTE: Ensure the scan tool is updated to the latest software.

NOTE: If the scan tool displays any error messages involving the Diagnostic CAN C circuits, diagnose and repair the error message before proceeding. Refer to the Table of Contents.

NOTE: A loss of communication with the TIPM can cause the ECU View button on the scan tool to be inoperative (not highlighted).

Can the scan tool communicate with the TIPM?

Yes

The no response condition is not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring for chafed, pierced, pinched, and partially broken wires and the wiring harness connectors for broken, bent, pushed out, and corroded terminals.

Go To 2

2.FUSED B (+) CIRCUITS OPEN AT TIPM

Does the test light illuminate brightly for each circuit?

Yes

Go To 3

Repair the Fused B(+) circuit for an open or short.
Perform the BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)

3.FUSED IGNITION SWITCH OUTPUT CIRCUITS OPEN AT TIPM

Does the test light illuminate brightly for each circuit?

Yes

Go To 4

Repair the Fused Ignition Switch Output circuit for an open.
Perform the BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)

4.GROUND CIRCUITS OPEN AT TIPM

Does the test light illuminate brightly on each circuit?

Yes

Go To 5

Repair the ground circuit that did not light the test light for an open.
Perform the BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)

5.CHECK FOR (D52) DIAGNOSTIC CAN C (+) CIRCUIT OPEN AT DLC

Is the resistance above 10.0 ohms?

Yes

Repair the (D52) Diagnostic CAN C (+) circuit for an open.
Perform the BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)

Go To 6

6.CHECK FOR (D51) DIAGNOSTIC CAN C (-) CIRCUIT OPEN AT DLC

Is the resistance above 10.0 ohms?

Yes

Repair the (D51) Diagnostic CAN C (-) circuit for an open.
Perform the BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)

Go To 7

7.CHECK FOR DIAGNOSTIC CAN C CIRCUITS SHORTED TOGETHER

Is the resistance below 100.0 ohms?

Yes

Repair the (D52) Diagnostic CAN C (+) circuit for a short to the (D51) Diagnostic CAN C (-) circuit.
Perform the BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).

Replace the Totally Integrated Power Module in accordance with the service information.
Perform the BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).