*NO RESPONSE FROM FDCM (FINAL DRIVE CONTROL MODULE)

For a complete wiring diagram Refer to Section 8W.

Possible Causes

(A959) FUSED B(+) CIRCUIT OPEN OR SHORTED

(Z905) GROUND CIRCUIT OPEN

(F943) FUSED RUN/START RELAY OUTPUT CIRCUIT OPEN OR SHORTED

(D65) CAN C BUS (+) CIRCUIT OPEN

(D64) CAN C BUS (-) CIRCUIT OPEN

ANTILOCK BRAKE MODULE

Diagnostic Test

1. TEST FOR INTERMITTENT CONDITION

Turn the ignition on.

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

With the scan tool, select ECU View.

NOTE: A red X will be next to the module that is not communicating, indicating that the module is not active on the Bus network. A green check indicates that the module is active on the Bus network.

NOTE: Check the TIPM for any active CAN C hardware DTCs, perform DTC before proceeding.

Does the scan tool display a red X next to the module?

Yes

Go To 2

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.

2. (A959) FUSED B(+) CIRCUIT OPEN OR SHORTED

Turn the ignition off.
Disconnect the Stabilizer Bar Control Module harness connector.
Using a 12-volt test light connected to ground, check each (A959) Fused B(+) circuit.

Does the test light illuminate brightly for each circuit?

Yes

Go To 3

Repair the (A959) 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. (Z905) GROUND CIRCUIT OPEN

Using a 12-volt test light connected to 12-volts, check the (Z905) ground circuit.

Does the test light illuminate brightly?

Yes

Go To 4

Repair the (Z905) ground circuit for an open.
Perform the BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).

4. (F943) FUSED RUN/START RELAY OUTPUT CIRCUIT OPEN OR SHORTED

Turn the ignition on.
Using a 12-volt test light connected to ground, check the (F943) Fused Run/Relay Output circuit.

Does the test light illuminate brightly?

Yes

Go To 5

Repair the (F943) Fused Run/Relay Output circuit for an open or short.
Perform the BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).

5. (D65) CAN C BUS (+) CIRCUIT OPEN

Turn the ignition off.
Disconnect the TIPM C1 harness connector.
Measure the resistance of the (D65) CAN C Bus (+) circuit between the TIPM C1 harness connector and the Stabilizer Bar Control Module connector.

Is resistance below 5.0 ohms?

Yes

Go To 6

Repair the (D65) CAN C Bus (+) circuit for an open.
Perform the BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).

6. (D64) CAN C BUS (-) CIRCUIT OPEN

Measure the resistance of the (D64) CAN C Bus (-) circuit between the TIPM C1 harness connector and the Stabilizer Bar Control Module connector.

Is resistance below 5.0 ohms?

Yes

Replace the Final Drive Control Module in accordance with the service information.

Perform the BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).

Repair the (D64) CAN C Bus (-) circuit for an open.
Perform the BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).