Sunday, February 9, 2020

2010 Acura Truck MDX V6-3.7L Page 661


4. 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.?



5. 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: Powertrain Management/Transmission Control Systems/Relays and



Modules - Transmission and Drivetrain/Relays and Modules - Differential/Control Unit/Testing and Inspection/SH-AWD Control Unit Update, or



substitute a known-good SH-AWD control unit See: Powertrain Management/Transmission Control Systems/Relays and Modules - Transmission



and Drivetrain/Relays and Modules - Differential/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 See: Powertrain Management/Transmission Control Systems/Relays and Modules - Transmission and



Drivetrain/Relays and Modules - Differential/Control Unit/Service and Repair.?



77-5



SH AWD DTC Troubleshooting: 77-5



DTC 77-5:



Yaw Rate-Lateral/Longitudinal Acceleration Sensor Malfunction



NOTE: Before you troubleshoot, review the general troubleshooting information See: Transmission and Drivetrain/Differential Assembly/Testing



and Inspection/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 77-5 indicated?



YES -



Go to step 5.



NO -



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



5. Check for DTCs in the VSA system with the HDS.



Are there yaw rate-lateral acceleration sensor 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: Powertrain Management/Transmission Control Systems/Relays and



Modules - Transmission and Drivetrain/Relays and Modules - Differential/Control Unit/Testing and Inspection/SH-AWD Control Unit Update, or



substitute a known-good SH-AWD control unit See: Powertrain Management/Transmission Control Systems/Relays and Modules - Transmission



and Drivetrain/Relays and Modules - Differential/Control Unit/Service and Repair, and recheck. If the symptom/indication goes away with the

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