NO RESPONSE FROM FDCM (FINAL DRIVE CONTROL MODULE)(ASBS)

For a complete wiring diagram, refer to the Wiring Information.

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
AUTOMATIC SWAY BAR SYSTEM MODULE

1. TEST FOR INTERMITTENT CONDITION

1.	Turn the ignition on.

NOTE: Make sure the Ignition Off Draw (IOD) fuse is installed and battery voltage is between 10.0 and 16.0 volts.

2.	Using 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

1.	Turn the ignition off.

2.	Disconnect the Final Drive Control Module (ASBS) harness connector.

3.	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 ASBS VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/SYSTEM, Auto Sway Bar (ASBS) - Standard Procedure)

3. (Z905) GROUND CIRCUIT OPEN

1.	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 ASBS VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/SYSTEM, Auto Sway Bar (ASBS) - Standard Procedure)

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

1.	Turn the ignition on.

2.	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 ASBS VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/SYSTEM, Auto Sway Bar (ASBS) - Standard Procedure)

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

1.	Turn the ignition off.

2.	Disconnect the TIPM C1 harness connector.

3.	Measure the resistance of the (D65) CAN C Bus (+) circuit between the TIPM C1 harness connector and the Final Drive Control Module (ASBS) connector.

Is resistance below 5.0 ohms?

Yes

Go To 6

Repair the (D65) CAN C Bus (+) circuit for an open.
Perform the ASBS VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/SYSTEM, Auto Sway Bar (ASBS) - Standard Procedure)

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

1.	Measure the resistance of the (D64) CAN C Bus (-) circuit between the TIPM C1 harness connector and the Final Drive Control Module (ASBS) connector.

Is resistance below 5.0 ohms?

Yes

Replace the Final Drive Control Module (ASBS) in accordance with the Service Information.
Perform the ASBS VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/SYSTEM, Auto Sway Bar (ASBS) - Standard Procedure)

Repair the (D64) CAN C Bus (-) circuit for an open.
Perform the ASBS VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/SYSTEM, Auto Sway Bar (ASBS) - Standard Procedure)

NO RESPONSE FROM FDCM (FINAL DRIVE CONTROL MODULE)(ASBS)

NO RESPONSE FROM FDCM (FINAL DRIVE CONTROL MODULE)(ASBS)

Possible Causes