2010 Acura Truck MDX V6-3.7L Page 275

NOTE: Drive the vehicle on a straight section of road, not on a lift.

31. Check for DTCs with the HDS.

Is DTC 11, 13, 15, or 17 indicated?

YES -

Check for loose terminals in the VSA modulator-control unit 46P connector. If the VSA modulator-control unit was updated, substitute a

known-good VSA modulator-control unit See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Traction Control

Module/Service and Repair, then retest. If the VSA modulator-control unit was substituted, go to step 1.

NO -

If the VSA modulator-control unit was updated, troubleshooting is complete. If the VSA modulator-control unit was substituted, replace the

original VSA modulator-control unit See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Traction Control

Module/Service and Repair. If any other DTCs are indicated, go to the indicated DTCs troubleshooting.?

15-1

SH AWD DTC Troubleshooting: 15-1

DTC 15-1:

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. Test-drive the vehicle with an assistant. When accelerating, check the LONGITUDINAL ACCELERATION SENSOR in the DATA LIST

with the HDS.

Does the sensor value change when acceleration?

YES -

Go to step 4.

NO -

Replace the yaw rate-lateral/longitudinal acceleration sensor See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Yaw

Rate Sensor/Service and Repair.?

4. Park the vehicle on a level surface.

5. Check the LONGITUDINAL ACCELERATION SENSOR in the DATA LIST with the HDS.

Is there 0.1 G or less?

YES -

Go to step 6.

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.?

6. Test-drive the vehicle for 2 minutes in a vehicle speed is kept constant at 19 mph (30 km/h).

7. Check for DTCs with the HDS.

Is DTC 15-1 indicated?

2010 Acura Truck MDX V6-3.7L Page 285

NOTE: Drive the vehicle on a straight section of road, not on a lift.

31. Check for DTCs with the HDS.

Is DTC 11, 13, 15, or 17 indicated?

YES -

Check for loose terminals in the VSA modulator-control unit 46P connector. If the VSA modulator-control unit was updated, substitute a

known-good VSA modulator-control unit See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Traction Control

Module/Service and Repair, then retest. If the VSA modulator-control unit was substituted, go to step 1.

NO -

If the VSA modulator-control unit was updated, troubleshooting is complete. If the VSA modulator-control unit was substituted, replace the

original VSA modulator-control unit See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Traction Control

Module/Service and Repair. If any other DTCs are indicated, go to the indicated DTCs troubleshooting.?

18

VSA DTC Troubleshooting: 12, 14, 16, 18

DTC 12, 14, 16, 18:

Wheel Speed Sensor Signal Malfunction

NOTE:

- If the ABS and other indicators come on because of electrical noise, the indicators will go off when you test-drive the vehicle speed at 10

mph (15 km/h) or more and the noise is gone.

- An incorrectly installed wheel bearing can cause one of these DTCs.

- Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information.

1. Turn the ignition switch to LOCK (0).

2. Check the appropriate wheel speed sensor and inspect the magnetic encoder on the appropriate hub bearing for debris: Front See: Steering

and Suspension/Steering/Front Steering Knuckle/Service and Repair, rear See: Steering and Suspension/Suspension/Rear Knuckle/Service

and Repair.

Are they installed correctly in good condition, and free of debris?

YES -

Go to step 3.

NO -

Reinstall or replace the appropriate wheel speed sensor, hub bearing unit, and retest by test-driving.?

3. Substitute an appropriate known-good wheel speed sensor See: Brakes and Traction Control/Antilock Brakes / Traction Control

Systems/Wheel Speed Sensor/Service and Repair.

4. Turn the ignition switch to ON (II).

5. Clear the DTC with the HDS.

6. Test-drive the vehicle at 10 mph (15 km/h) or more.

7. Check for DTCs with the HDS.

Is DTC 12, 14, 16, or 18 indicated?