Sunday, April 5, 2020

2010 Acura Truck MDX V6-3.7L Page 359


SH AWD DTC Troubleshooting: 33-2, 33-3



DTC 33-2, 33-3:



Yaw Rate 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. Check for DTCs in the VSA system with the HDS.



Are any yaw rate sensor DTCs indicated?



YES -



Go to the indicated DTC's troubleshooting.?



NO -



Go to step 3.



3. Test-drive the vehicle with an assistant. Drive in a left and right zig-zag pattern at about 13 mph (20 km/h) and check the YAW RATE



SENSOR in the DATA LIST with the HDS.



Does the sensor value change when turning?



YES -



Go to step 4.



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.?



4. Park the vehicle on a level surface.



5. Check the YAW RATE SENSOR in the DATA LIST with the HDS.



Is there 3.5 deg/s or less?



YES -



Intermittent failure, the system is OK at this time. If the DTC returns, replace the 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.?



NO -



Do the yaw rate-lateral/longitudinal acceleration neutral position memorization See: Brakes and Traction Control/Antilock Brakes / Traction



Control Systems/Yaw Rate Sensor/Testing and Inspection. If the DTC returns, replace the 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.?



33-2x



SRS DTC Troubleshooting: 33-1x, 33-2x



DTC 33-1x ("x" can be 0 thru 9 or A thru F):



Open in the Left Side Curtain Airbag Inflator



DTC 33-2x ("x" can be 0 thru 9 or A thru F):



Increased Resistance in the Left Side Curtain Airbag Inflator