2010 Acura Truck MDX V6-3.7L Page 211

Go to step 4.

NO -

Intermittent failure, the system is OK at this time. Go to Troubleshooting Intermittent Failures. If another DTC is indicated, troubleshoot the DTC.?

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

5. Disconnect the negative cable from the battery, then wait at least 3 minutes.

6. Remove the access panel (A) from the steering wheel, then disconnect the driver's airbag 4P connector (B) from the cable reel.

7. Connect the SRS inflator simulator (2 Ohms connectors) and simulator lead J to the cable reel.

8. Reconnect the negative cable to the battery.

9. Clear the DTCs with the HDS.

10. Check for DTCs with the HDS.

Is DTC 11-9x or 11-Bx indicated?

YES -

Go to step 11.

NO -

Short to ground in the driver's airbag first or second inflator; replace the driver's airbag See: Restraints and Safety Systems/Air Bag Systems/Air

Bag/Service and Repair/Removal and Replacement/Driver's Airbag Replacement, then clear the DTC.?

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

12. Disconnect the negative cable from the battery, then wait at least 3 minutes.

13. Remove the column cover See: Steering and Suspension/Steering/Steering Column/Steering Column Cover/Service and Repair, then

disconnect the dashboard wire harness 4P connector (A) from the cable reel.

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Go to step 4.

NO -

Intermittent failure, the system is OK at this time. Go to Troubleshooting Intermittent Failures. If another DTC is indicated, troubleshoot the DTC.?

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

5. Disconnect the driver's seat wire harness 3P connector (A) from the driver's seat belt buckle switch 3P connector (B).

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

7. From the HDS Main menu, select SRS, then PARAMETER INFORMATION. In the PARAMETER INFORMATION Menu, select Buckle

Switch, Seat Position Sensor and check the status on the HDS screen for FRONT LEFT SEAT BELT BUCKLE SWITCH when the seat belt

is buckled, and unbuckled.

Is OPEN indicated on the HDS?

YES -

Faulty driver's seat belt buckle switch; replace the driver's seat belt buckle assembly See: Restraints and Safety Systems/Seat Belt Systems/Seat

Belt/Service and Repair/Front Seat Belt Replacement, then clear the DTC.?

NO -

Go to step 8.

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

9. Disconnect the negative cable from the battery, then wait for 3 minutes.

10. Disconnect SRS unit connector B (39P) from the SRS unit.

11. Measure the resistance between body ground and driver's seat wire harness 3P connector terminal No. 1. There should be an open circuit or

at least 1 MOhms.

Is the resistance as specified?

YES -

Go to step 12.

NO -

Short to ground in the driver's seat wire harness or the floor wire harness; replace the faulty harness, then clear the DTC.?

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Go to step 4.

NO -

Intermittent failure, the system is OK at this time. Go to Troubleshooting Intermittent Failures. If another DTC is indicated, troubleshoot the DTC.?

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

5. Disconnect the negative cable from the battery, then wait at least 3 minutes.

6. Remove the B-pillar lower trim, then disconnect the floor wire harness 4P connector (A) from the driver's seat belt tensioner.

7. Connect the SRS inflator simulator (2 Ohms connectors) and simulator lead K to the floor wire harness.

8. Reconnect the negative cable to the battery.

9. Clear the DTCs with the HDS.

10. Check for DTCs with the HDS.

Is DTC 21-1x or 21-2x indicated?

YES -

Go to step 11.

NO -

Open or increased resistance in the driver's seat belt tensioner; replace the driver's seat belt See: Restraints and Safety Systems/Seat Belt

Systems/Seat Belt/Service and Repair/Front Seat Belt Replacement, then clear the DTC.?

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

12. Disconnect the negative cable from the battery, then wait at least 3 minutes.

13. Disconnect SRS unit connector B (39P) from the SRS unit.

14. Connect the SRS short canceller (070AZ-SAA0100) to SRS unit connector B (39P) terminals No. 12 and No. 13.

15. Measure the resistance between SRS unit connector B (39P) terminals No. 12 and No. 13. There should be 2.0-3.0 Ohms.

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Go to step 4.

NO -

Replace the brake pedal position switch See: Brakes and Traction Control/Brake Pedal Assy/Adjustments.?

4. Short the SCS line with the HDS.

5. Disconnect the PCM connector A (49P).

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

7. Measure the voltage between PCM connector A (49P) terminal No. 8 and body ground.

Is there 0.1 V or more when the brake pedal is released?

YES -

Repair a short to power in the wire between the brake pedal position switch and the PCM.?

NO -

Go to step 8.

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

9. Reconnect all connectors.

10. Update the PCM if it does not have the latest software See: Powertrain Management/Computers and Control Systems/Engine Control

Module/Testing and Inspection/Programming and Relearning/PCM Update, or substitute a known-good PCM.

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

12. Clear the DTC with the HDS.

13. Test-drive the vehicle at 8 mph (12 km/h) for 60 seconds or more.

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

14. Check for DTCs with the HDS.

Is DTC 137 indicated?

YES -

Check for loose terminals in the PCM connector A (49P). If the PCM was updated, substitute a known-good PCM, then retest. If the PCM was

substituted, go to step 15.

NO -

If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM See: Powertrain

Management/Computers and Control Systems/Engine Control Module/Service and Repair.?

15. Update the VSA modulator-control unit if it does not have the latest software See: Brakes and Traction Control/Antilock Brakes / Traction

Control Systems/Traction Control Module/Testing and Inspection. If the unit already has the latest software, substitute a known-good VSA

modulator-control unit See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Traction Control Module/Service and

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Go to step 4.

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

5. Check the RF, LF, RR, or LR TIRE PRESSURE in the TPMS DATA LIST with the HDS, and compare with measured actual tire pressure.

NOTE: If the HDS screen shows UNDEFINED for sensor status, turn the ignition switch to LOCK (0), rotate the tire 1/4 turn, then turn the ignition

switch to ON (II), and try again. If UNDEFINED is still displayed, repeat this procedure until NORMAL is shown.

Is the indicated tire pressure on the HDS within 40 kPa (0.4 kgf/cm2, 6 psi) of the actual tire pressure?

YES -

Check for loose terminals and poor connections at the TPMS control unit. If necessary, substitute a known-good TPMS control unit See:

Instrument Panel, Gauges and Warning Indicators/Tire Monitoring System/Tire Pressure Module/Service and Repair, and recheck.?

NO -

Check that the tire pressure sensor is properly mounted. If the mounting is OK, then replace the appropriate tire pressure sensor See: Instrument

Panel, Gauges and Warning Indicators/Tire Monitoring System/Tire Pressure Sensor/Service and Repair.?

VSA System

VSA DTC Troubleshooting: 11, 13, 15, 17

DTC 11, 13, 15, 17:

Wheel Speed Sensor Circuit Malfunction

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

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

2. Check for DTCs with the HDS.

Is DTC 88 indicated with DTC 11, 13, 15, or 17 at the same time?

YES -

Go to step 9.

NO -

Go to step 3.

3. Clear the DTC with the HDS.

4. Turn the ignition switch to LOCK (0), then turn it to ON (II) again.

5. Check for DTCs with the HDS.

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

YES -

Go to step 6.

NO -

Intermittent failure, the system is OK at this time. Check for loose terminals between the wheel speed sensor 2P connector and the VSA

modulator-control unit 46P connector. Check for a loose connection at G303. Refer to intermittent failures troubleshooting.?

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

7. Check for loose terminals between the wheel speed sensor 2P connector and the VSA modulator-control unit 46P connector.

Are the connections OK?

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Go to step 4.

NO -

Intermittent failure, the system is OK at this time. Go to Troubleshooting Intermittent Failures. If another DTC is indicated, troubleshoot the DTC.?

4. Turn the ignition switch to LOCK (0), then wait for 10 seconds.

5. Disconnect the driver's seat wire harness 2P connector (A) from the driver's seat position sensor (B) See: Restraints and Safety Systems/Air

Bag Systems/Seat Position Sensor/Service and Repair.

6. Clear the DTCs with the HDS.

7. Check for DTCs with the HDS.

Is DTC 71-2x indicated?

YES -

Go to step 8.

NO -

Faulty driver's seat position sensor; replace the driver's seat position sensor See: Restraints and Safety Systems/Air Bag Systems/Seat Position

Sensor/Service and Repair, then clear the DTC.?

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

9. Disconnect the negative cable from the battery, then wait at least 3 minutes.

10. Disconnect SRS unit connector B (39P) from the SRS unit.

11. Measure the resistance between body ground and SRS unit connector B (39P) terminal No. 23. There should be an open circuit or at least 1M

Ohms.

Is the resistance as specified?

YES -

Faulty driver's seat position sensor or SRS unit; replace the driver's seat position sensor See: Restraints and Safety Systems/Air Bag Systems/Seat

Position Sensor/Service and Repair, then clear the DTC. If the problem is still present, replace the SRS unit See: Relays and Modules/Relays and

Modules - Restraints and Safety Systems/Air Bag Control Module/Service and Repair/SRS Unit Replacement.?