77-1

SH AWD DTC Troubleshooting: 77-1

DTC 77-1:

The Functional Abnormalities of Fuel and Emissions

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 with the HDS.

Is DTC 77-1 indicated?

YES -

Go to step 5.

NO -

Intermittent failure, the system is OK at this time.�

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

Are there any PGM-FI system DTCs indicated?

YES -

Go to the indicated DTC's troubleshooting.�

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.�