DTC 77-4: The Functional Abnormalities of Automatic-Transmission
WARNING: This page is about a different car, the 2013 Acura MDX, 2012 Acura MDX, 2011 Acura MDX, and 2010 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Before you troubleshoot, review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION
).
- Turn the ignition switch to ON (II).
- Clear the DTC with the HDS.
- Start the engine.
- Check for DTCs with the HDS.
Is DTC 77-4 indicated?
YES -Go to step 5.
NO -Intermittent failure, the system is OK at this time.
- Check for DTCs in the A/T system with the HDS.
Are there any A/T 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 (see SH-AWD® CONTROL UNIT UPDATE ), or substitute a known-good SH-AWD control unit (see SH-AWD® CONTROL UNIT REPLACEMENT ), 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 (see SH-AWD® CONTROL UNIT REPLACEMENT ).