DTC 44-31
DTC 44-31: SH-AWD Relay Stuck OFF1. Turn the ignition switch OFF.
2. Check these fuse;
^ No. 22 (70 A) fuse in the under-hood fuse/relay box.
^ No. 1 (30 A) fuse in the auxiliary under-hood fuse box.
Are the fuses OK?
YES - Go to step 3.
NO - Repair short to ground in the wire between the fuse and the SH-AWD relay, then replace the fuse use and recheck.
3. Clear the DTC with the HDS.
4. Start the engine.
5. Check for DTCs with the HDS.
Is DTC 44-31 indicated?
YES - Go to step 6.
NO - intermittent failure, the system is OK at this time.
6. Turn the ignition switch OFF.
7. Test the SH-AWD relay.
Is the SH-AWD relay OK?
YES - Go to step 8.
NO - Replace the SH-AWD relay.
8. Disconnect SH-AWD control unit connector B (8P).
9. Check for continuity between SH-AWD relay 4P connector terminal No. 1 and SH-AWD control unit connector terminal B1.
Is there continuity?
YES - Go to step 10.
NO - Repair an open in the wire between SH-AWD control unit connector A and the SH-AWD relay.
10. Check for continuity between SH-AWD relay 4P connector terminal No. 3 and SH-AWD control unit connector terminal A3.
Is there continuity?
YES - Go to step 11.
NO - Repair open in the wire between SH-AWD control unit connector A and the SH-AWD relay.
11. Check for continuity between SH-AWD relay V connector terminal No. 4 and body ground.
Is there continuity?
YES - Go to step 12.
NO - Repair open in the wire between SH-AWD relay and body ground.
12. Measure voltage between SH-AWD relay V connector terminal No. 2 and body ground.
Is there battery voltage?
YES - Check for loose connector terminals at the SH-AWD control unit. If the connections are OK, substitute a known-good SH-AWD control unit and recheck.
NO - Repair open in the wire between the No. 1 fuse in the auxiliary under-hood fuse box and the SH-AWD relay.