41-1

SH-AWD DTC Troubleshooting: 41-1

DTC 41-1: F-CAN Malfunction (Lost Communication with Powertrain Control Module (PCM))

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

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

2. 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 3.


3. Clear the DTC with the HDS.

4. Start the engine.

5. Check for DTCs with the HDS.

Is DTC 41-1 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 A11 and PCM connector terminals E15 and E26.


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

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

8. Disconnect PCM connector E (31P).

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

10. Check for continuity between PCM connector terminals E15, E26 and SH-AWD control unit connector terminals A10, A11 individually.

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 an open in the wires between the SH-AWD control unit and the PCM.