41-2

SH-AWD DTC Troubleshooting: 41-2

DTC 41-2: F-CAN Malfunction (Lost Communication with VSA Modulator-Control Unit)

NOTE: Before you troubleshoot, review the general troubleshooting information. Initial Inspection and Diagnostic Overview

1. Turn the ignition switch to ON (II).

2. Make sure the HDS communicates with the vehicle and the SH-AWD control unit. If it doesn't, troubleshoot the DLC circuit. Testing and Inspection

3. Check for DTCs in the VSA system with the HDS.

Are there any DTCs indicated?
YES - Go to the indicated DTC's troubleshooting.

NO - Go to step 4.


4. Clear the DTC with the HDS.

5. Start the engine.

6. Check for DTCs with the HDS.

Is DTC 41-2 indicated?
YES - Go to step 7.

NO - Intermittent failure, the system is OK at this time. Check for intermittent open between SH-AWD control unit connector terminals A10 and A11 and VSA modulator-control unit 47P connector terminals No. 14 and No. 30.


7. Turn the ignition switch to LOCK (0).

8. Jump the SCS line with the HDS.
NOTE: This step must be done to prevent PCM damage.

9. Disconnect the VSA modulator-control unit 47P connector.

10. Connect the VSA modulator-control unit 47P connector terminals No. 14 and No. 30 to body ground with jumper wires.

11. Disconnect SH-AWD control unit connector A (26P).






12. Check for continuity between SH-AWD control unit connector terminals A10 and A11 to body ground.

Is there continuity?
YES - Substitute a known-good SH-AWD control unit Service and Repair and recheck. If the symptom/indication goes away with the known-good SH-AWD control unit, replace the original SH-AWD control unit. Service and Repair

NO - Repair open in the wires between the SH-AWD control unit and the VSA modulator-control unit.