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. Clear the DTC with the HDS.

3. Start the engine.

4. Check for DTCs in the PGM-FI system with the HDS.

Are there any PGM-FI DTCs indicated?

YES -

Go to the indicated DTC's troubleshooting.�

NO -

Go to step 5.

5. Check for DTCs with the HDS.

Is DTC 41-2 indicated?

YES -

Go to step 6.

NO -

Intermittent failure, the system is OK at this time. Check for intermittent open between SH-AWD control unit connector terminals A10 and A20 and VSA modulator-control unit 46P connector terminals No. 38 and No. 39.�

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

7. Disconnect the VSA modulator-control unit 46P connector.

8. Disconnect SH-AWD control unit connector A (20P).

9. Check for continuity between VSA modulator-control unit 46P connector terminals No. 38, No. 39 and SH-AWD control unit connector terminals A10, A20 respectively.





Is there continuity?

YES -

Go to step 10.

NO -

Repair an open in the wires between the SH-AWD control unit and the VSA modulator-control unit.�

10. Check for DTCs in the PGM-FI system with the HDS.

Are there any F-CAN communication failure DTCs between the VSA system and the PGM-FI system indicated?

YES -

Substitute a known-good VSA modulator-control unit Service and Repair and recheck. If the symptom/indication goes away with a known-good VSA modulator-control unit, replace the original SH-AWD control unit Service and Repair.�

NO -

Update the SH-AWD control unit if it does not have the latest software SH-AWD Control Unit Update, or substitute a known-good SH-AWD control unit Service and Repair and recheck. If the symptom/indication goes away with the updated SH-AWD control unit, troubleshooting is complete. If the symptom/indication goes away with a known-good SH-AWD control unit, replace the original SH-AWD control unit Service and Repair.�