DTC 41-1
DTC 41-1: Loss of Communication with PCM1. Clear the DTC with the HDS.
2. Start the engine.
3. Check for DTCs with the HDS.
Is DTC 41-1 indicated?
YES - Go to step 4.
NO - intermittent failure, the system is OK at this time.
4. Check the No. 29 (10 A) fuse in the driver's under dash fuse/relay box.
Is the fuse OK?
YES - Go to step 5.
NO - Replace the fuse and recheck.
5. Check for PGM-Fl System DTCs with the HDS.
Are any DTCs indicated?
YES - Go to the indicated DTCs troubleshooting.
NO - Go to step 6.
6. Turn the ignition switch OFF.
7. Disconnect SH-AWD control unit connector A (26P).
8. Disconnect PCM connector E (31 P).
9. Check for continuity between SH-AWD control unit connector terminal All and PCM connector terminal E15.
Is there continuity?
YES - Go to step 10.
NO - Repair open in the wire between SH-AWD control unit connector A and PCM connector E.
10. 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.