DTC 41-1

DTC 41-1: Loss of Communication with PCM

NOTE: Before you troubleshoot, review the general troubleshooting information.

1. Turn the ignition switch 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.
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.

6. Check the No. 29 (7.5 A) fuse in the driver's under-dash fuse/relay box.

Is the fuse OK?

YES - Go to step 7.

NO - Replace the fuse and recheck.

7. Check for PGM-FI System DTCs with the HDS.

Are any DTCs indicated?

YES - Go to the indicated DTC's troubleshooting.

NO - Go to step 8.

8. Turn the ignition switch OFF.
9. Disconnect SH-AWD control unit connector A (26P).
10. Disconnect PCM connector E (31P).
11. Check for continuity between SH-AWD control unit connector terminal All and PCM connector terminal E15.





Is there continuity?

YES - Go to step 12.

NO - Repair open in the wire between SH-AWD control unit connector A and PCM connector E.

12. Check for continuity between SH-AWD control unit connector terminal A10 and PCM connector terminal E26.





Is there continuity?

YES - Check for loose connector terminals at the SH-AWD control unit, the PCM, and G602. If all connections are OK, replace the SH-AWD control unit.

NO - Repair open in the wire between SH-AWD control unit connector A and PCM connector E.