2010 Acura Truck MDX V6-3.7L Page 689

7. Turn the ignition switch to ON (II), then wait for 10 seconds.

8. Clear the DTCs with the HDS.

9. Turn the ignition switch to ON (II), then wait for 10 seconds.

10. From the HDS Main Menu, select SRS, then Inspection. In the Inspection Menu, select SWS DTC CHECK.

Is SWS DTC 21-11 indicated?

YES -

Short to power in the ODS unit harness; replace the ODS unit harness, then clear the DTC. If the DTC does not clear, replace the ODS unit See:

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

NO -

Faulty outer side front passenger's weight sensor; replace the outer side front passenger's weight sensor See: Restraints and Safety Systems/Air Bag

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

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

12. Disconnect the ODS unit harness 3P connector (A) from the outer side front passenger's weight sensor (B).

13. Turn the ignition switch to ON (II), then wait for 10 seconds.

14. Clear the DTCs with the HDS.

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

16. Turn the ignition switch to ON (II), then wait for 10 seconds.

17. From the HDS Main Menu, select SRS, then Inspection. In the Inspection Menu, select SWS DTC CHECK.

Is SWS DTC 21-12 indicated?

YES -

Go to step 18.

NO -

Faulty outer side front passenger's weight sensor; replace the outer side front passenger's weight sensor See: Restraints and Safety Systems/Air Bag

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

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

19. Measure the resistance between body ground and ODS unit harness 3P connector terminal No. 3. There should be an open circuit or at least 1

2010 Acura Truck MDX V6-3.7L Page 695

6. Turn the ignition switch to ON (II), then wait for 10 seconds.

7. Check for DTCs with the HDS.

Is DTC 85-4x, 85-63, or 85-64 indicated?

YES -

Replace the ODS unit See: Relays and Modules/Relays and Modules - Restraints and Safety Systems/Air Bag Control Module/Service and

Repair/ODS Unit Replacement, then clear the DTC, and retest. If the DTC 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.?

NO -

The system is OK at this time.?

85-61

SRS DTC Troubleshooting: 85-61, 85-62

DTC 85-61:

No Signal From the ODS Unit

DTC 85-62:

Incorrect Data From the ODS Unit

NOTE:

- Before doing this troubleshooting procedure, review SRS Precautions and Procedures See: Body and Frame/Air Bag(s) Arming and

Disarming/Service and Repair, General Troubleshooting Information See: Restraints and Safety Systems/Air Bag Systems/Testing and

Inspection/Reading and Clearing Diagnostic Trouble Codes and Battery Terminal Disconnection and Reconnection See: Starting and

Charging/Battery/Service and Repair/Procedures.

- Before replacing the SRS unit, check the SRS unit software version with the HDS. If the software version is not the latest, update the SRS

unit software See: Restraints and Safety Systems/Air Bag Systems/Testing and Inspection/Programming and Relearning/SRS Unit Update,

and retest.

1. Clear the DTCs with the HDS.

2. Turn the ignition switch to ON (II), then wait for 10 seconds.

3. Check for DTCs with the HDS.

Is DTC 85-61 or 85-62 indicated?

YES -

Go to step 5.

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. Check the No. 2 (7.5 A) fuse in the auxiliary under-dash fuse holder 2.

Is the fuse OK?

YES -

Go to step 6.

NO -

Replace the fuse, then turn the ignition switch to ON (II). If the fuse blows again, check for short in the auxiliary under-dash fuse holder 2 No. 2

(7.5 A) fuse circuit (right engine compartment wire harness, floor wire harness, or ODS unit harness).?

6. Disconnect the ODS unit harness 18P connector (A) from the ODS unit (B).

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2. Turn the ignition switch to ON (II), then wait for 10 seconds.

3. Check for DTCs with the HDS.

Is DTC 31-1x or 31-2x indicated?

YES -

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. Disconnect the floor wire harness 2P connector (A) from the driver's side airbag (B).

7. Connect the SRS inflator simulator (2 Ohms connectors) and simulator lead L 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 31-1x or 31-2x indicated?

YES -

Go to step 11.

NO -

Open or increased resistance in the driver's side airbag inflator; replace the driver's side 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. Disconnect SRS unit connector B (39P) from the SRS unit.

14. Disconnect the SRS inflator simulator from SRS simulator lead. Do not disconnect the simulator lead from the floor wire harness 2P

connector.

15. Measure the resistance between the terminals of the black SRS simulator lead (A). There should be less than 1.0 Ohms.

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2. Turn the ignition switch to ON (II), then wait for 10 seconds.

3. Check for DTCs with the HDS.

Is DTC 45-1x (except 45-11) indicated?

YES -

Faulty left side impact sensor (second); replace the left side impact sensor (second) See: Restraints and Safety Systems/Air Bag Systems/Impact

Sensor/Service and Repair/Side Impact Sensor (Second) Replacement, then clear the DTC.?

NO -

Go to step 4.

4. Clear the DTCs with the HDS.

5. Turn the ignition switch to ON (II), then wait for 10 seconds.

6. Check for DTCs with the HDS.

Is DTC 43-1x (except 43-11) indicated?

YES -

Faulty left side impact sensor (first); replace the left side impact sensor (first), then clear the DTC.?

NO -

Go to step 7.

7. Clear the DTCs with the HDS.

8. Turn the ignition switch to ON (II), then wait for 10 seconds.

9. Check for DTCs with the HDS.

Is DTC 45-11 indicated?

YES -

Go to step 13.

NO -

Go to step 10.

10. Clear the DTCs with the HDS.

11. Turn the ignition switch to ON (II), then wait for 10 seconds.

12. Check for DTCs with the HDS.

Is DTC 43-11 indicated?

YES -

Go to step 42.

NO -

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

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

14. Check the connections between SRS unit connector B (39P) and the SRS unit, and between the floor wire harness 4P connector and the left

side impact sensor (first) See: Restraints and Safety Systems/Air Bag Systems/Impact Sensor/Service and Repair/Side Impact Sensor (First)

Replacement and between the floor wire 2P connector and left side impact sensor (second) See: Restraints and Safety Systems/Air Bag

Systems/Impact Sensor/Service and Repair/Side Impact Sensor (Second) Replacement.

Are the connections OK?

2010 Acura Truck MDX V6-3.7L Page 308

2. Turn the ignition switch to ON (II), then wait for 10 seconds.

3. Check for DTCs with the HDS.

Is DTC 22-8x indicated?

YES -

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 front passenger'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 22-8x indicated?

YES -

Go to step 11.

NO -

Short to power in the front passenger's seat belt tensioner; replace the front passenger'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. Disconnect the simulator lead from the floor wire harness.

15. Reconnect the negative cable to the battery.

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

17. Measure the voltage between body ground and SRS unit connector B (39P) terminals No. 14 and No. 15 individually. There should be less

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6. Turn the ignition switch to ON (II), then wait for 10 seconds.

7. Measure the voltage between ODS unit harness 3P connector terminal No. 1 and No. 3. There should be more than 6 V.

Is the voltage as specified?

YES -

Faulty outer side front passenger's weight sensor; replace the outer side front passenger's weight sensor See: Restraints and Safety Systems/Air Bag

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

NO -

Open in the ODS unit harness; replace the ODS unit harness, then clear the DTC, and retest. If the DTC is still present, replace the ODS unit See:

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

83-23

SRS DTC Troubleshooting: 83-23

DTC 83-23:

No Signal From the Outer Side Front Passenger's Weight Sensor

NOTE:

- Before doing this troubleshooting procedure review SRS Precautions and Procedures See: Body and Frame/Air Bag(s) Arming and

Disarming/Service and Repair and General Troubleshooting Information See: Restraints and Safety Systems/Air Bag Systems/Testing and

Inspection/Reading and Clearing Diagnostic Trouble Codes and Battery Terminal Disconnection and Reconnection See: Starting and

Charging/Battery/Service and Repair/Procedures.

- These SWS DTCs are cleared by turning the ignition switch to LOCK(0).

1. Clear the DTCs with the HDS.

2. Turn the ignition switch to ON (II), then wait for 10 seconds.

3. Check for DTCs with the HDS.

Is DTC 83-23 indicated?

YES -

Faulty outer side front passenger's weight sensor; replace the outer side front passenger's weight sensor See: Restraints and Safety Systems/Air Bag

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

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2. Turn the ignition switch to ON (II), then wait for 10 seconds.

3. Watch the ACC indicator.

Does the ACC indicator (amber) go off?

YES -

Go to step 4.

NO -

Go to step 5.

4. Press the brake pedal, and watch the ACC indicator.

Does the ACC unit indicator (amber) go off?

YES -

The system is OK at this time. Check for loose or poor connections.?

NO -

Go to step 5.

5. Check for DTCs with the HDS.

Is DTC 49 indicated?

YES -

Go to step 6.

NO -

Troubleshoot the indicated DTC(s). If there are no DTCs, the system is OK at this time.?

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

7. Disconnect the ACC unit 20P connector.

8. Measure the resistance between ACC unit 20P connector terminal No. 5 and body ground. There should be an open circuit or at least 1

MOhms.

Is the resistance as specified?

YES -

Go to step 9.

NO -

Repair a short to ground in the wire between the ACC unit and the right front brake fluid pressure sensor.?

9. Disconnect the right front brake fluid pressure sensor 3P connector.

10. Connect right front brake fluid pressure sensor 3P connector terminal No. 2 to body ground with a jumper wire.

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3. Turn the ignition switch to ON (II), then wait for 10 seconds.

4. Check for DTCs with the HDS.

Is DTC 56-21, 56-31, 56-22, 56-23, 56-32, or 56-33 indicated?

YES -

Go to step 5.

NO -

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

5. Turn the ignition switch to ON (II), and see if the malfunction indicator lamp (MIL) comes on.

Does the MIL stay on longer than 30 seconds?

YES -

Go to the MIL Circuit Troubleshooting See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Component Tests

and General Diagnostics/MIL Circuit Troubleshooting.?

NO -

Go to step 6.

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

7. Jump the SCS line with the HDS See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Initial Inspection

and Diagnostic Overview.

NOTE: This step must be done to protect the PCM from damage.

8. Disconnect PCM connector A (49P) from the PCM See: Powertrain Management/Computers and Control Systems/Testing and

Inspection/Initial Inspection and Diagnostic Overview.

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

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

11. Check for continuity between SRS unit connector A (39P) terminals No. 16 and No. 17 and PCM connector A (49P) terminals No. 48 and

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

7. Turn the ignition switch to ON (II), then wait for 10 seconds.

8. Check for DTCs with the HDS.

Is DTC 81-4x,81-63, or 81-64 indicated?

YES -

Go to step 9.

NO -

The system is OK at this time.?

9. Replace the ODS unit See: Relays and Modules/Relays and Modules - Restraints and Safety Systems/Air Bag Control Module/Service and

Repair/ODS Unit Replacement.

10. Clear the DTCs with the HDS.

11. Turn the ignition switch to ON (II), then wait for 10 seconds.

12. Check for DTCs with the HDS.

Is DTC 81-4x,81-63, or 81-64 indicated?

YES -

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.?

NO -

The system is OK.?

81-64

SRS DTC Troubleshooting: 81-4x, 81-63, 81-64

DTC 81-4x ("x" can be 0 thru 9 or A thru F), 81-63, 81-64 :

Internal the Failure of the ODS Unit

NOTE:

- Before doing this troubleshooting procedure, review SRS Precautions and Procedures See: Body and Frame/Air Bag(s) Arming and

Disarming/Service and Repair and General Troubleshooting Information See: Restraints and Safety Systems/Air Bag Systems/Testing and

Inspection/Reading and Clearing Diagnostic Trouble Codes.

- Before replacing the SRS unit, check the SRS unit software version with the HDS. If the software version is not the latest, update the SRS

unit software See: Restraints and Safety Systems/Air Bag Systems/Testing and Inspection/Programming and Relearning/SRS Unit Update,

and retest.

1. Clear the DTCs with the HDS.

2. Turn the ignition switch to ON (II), then wait for 10 seconds.

3. Check for DTCs with the HDS.

Is DTC 81-4x,81-63, or 81-64 indicated?

YES -

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. Do the ODS unit initialization See: Restraints and Safety Systems/Air Bag Systems/Testing and Inspection/Programming and

Relearning/ODS Unit Initialization.

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7. Turn the ignition switch to ON (II), then wait for 10 seconds.

8. Clear the DTCs with the HDS.

9. Turn the ignition switch to ON (II), then wait for 10 seconds.

10. From the HDS Main Menu, select SRS, then Inspection. In the Inspection Menu, select SWS DTC CHECK.

Is SWS DTC 11-11 indicated?

YES -

Short to power in the ODS unit harness; replace the ODS unit harness, then clear the DTC. If the DTC does not clear, replace the ODS unit See:

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

NO -

Faulty inner side front passenger's weight sensor; replace the inner side front passenger's weight sensor See: Restraints and Safety Systems/Air Bag

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

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

12. Disconnect the ODS unit harness 2P connector (A) from the inner side front passenger's weight sensor (B).

13. Turn the ignition switch to ON (II), then wait for 10 seconds.

14. Clear the DTCs with the HDS.

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

16. Turn the ignition switch to ON (II), then wait for 10 seconds.

17. From the HDS Main Menu, select SRS, then Inspection. In the Inspection Menu, select SWS DTC CHECK.

Is SWS DTC 11-12 indicated?

2010 Acura Truck MDX V6-3.7L Page 685

6. Turn the ignition switch to ON (II), then wait for 10 seconds.

7. Measure the voltage between ODS unit harness 2P connector terminal No. 1 and No. 2. There should be more than 6 V.

Is the voltage as specified?

YES -

Faulty inner side front passenger's weight sensor; replace the inner side front passenger's weight sensor See: Restraints and Safety Systems/Air Bag

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

NO -

Open in the ODS unit harness; replace the ODS unit harness, then clear the DTC, and retest. If the DTC is still present, replace the ODS unit See:

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

82-13

SRS DTC Troubleshooting: 82-13

DTC 82-13:

No Signal From the Inner Side Front Passenger's Weight Sensor

NOTE:

- Before doing this troubleshooting procedure review SRS Precautions and Procedures See: Body and Frame/Air Bag(s) Arming and

Disarming/Service and Repair and General Troubleshooting Information See: Restraints and Safety Systems/Air Bag Systems/Testing and

Inspection/Reading and Clearing Diagnostic Trouble Codes and Battery Terminal Disconnection and Reconnection See: Starting and

Charging/Battery/Service and Repair/Procedures.

- These SWS DTCs are cleared by turning the ignition switch to LOCK(0).

1. Clear the DTCs with the HDS.

2. Turn the ignition switch to ON (II), then wait for 10 seconds.

3. Check for DTCs with the HDS.

Is DTC 82-13 indicated?

YES -

Faulty inner side front passenger's weight sensor; replace the inner side front passenger's weight sensor See: Restraints and Safety Systems/Air Bag

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