2010 Acura Truck MDX V6-3.7L Page 27

Is the resistance as specified?

YES -

Go to step 11.

NO -

Repair a short to ground in the wire between the BSI control unit and the right BSI alert indicator.?

11. Measure the resistance between BSI control unit 16P connector terminal No. 14 and right BSI alert indicator 2P connector terminal No. 2.

There should be less than 1.0 Ohms.

Is the resistance as specified?

YES -

Go to step 12.

NO -

Repair an open in the wire between the BSI control unit and the right BSI alert indicator.?

12. Make sure the BSI control unit 16P connector is disconnected.

13. Turn the ignitch switch to ON (II).

14. Measure the voltage between right BSI alert indicator 2P connector terminal No. 2 and body ground. There should be less than 0.2 V.

2010 Acura Truck MDX V6-3.7L Page 475

Is the resistance as specified?

YES -

Disconnect and reconnect the connector, and then check DTC again. 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.?

NO -

Open in the floor wire harness between the SRS unit and the left side impact sensor (first); replace the floor wire harness, then clear the DTC.?

45-2x

SRS DTC Troubleshooting: 45-2x, 45-8x, 45-9x, 45-Ax, 45-Bx

DTC 45-2x, 45-8x, 45-9x, 45-Ax, 45-Bx ("x" can be 0 thru 9 or A thru F):

Internal Failure of the Left Side Impact Sensor (second)

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 45-2x, 45-8x, 45-9x, 45-Ax, or 45-Bx 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. 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 -

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

2010 Acura Truck MDX V6-3.7L Page 501

Is the resistance as specified?

YES -

Go to step 19.

NO -

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

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

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

21. Measure the resistance between ACC unit 20P connector terminal No. 6 and body ground. There should be less than 1.0 Ohms.

Is the resistance as specified?

YES -

Go to step 22.

NO -

Repair an open in the wire between the ACC unit and the right front brake fluid pressure sensor.?

22. Measure the resistance between ACC unit 20P connector terminals No. 5 and No. 6. There should be an open circuit or at least 1 MOhms.

2010 Acura Truck MDX V6-3.7L Page 486

Is the resistance as specified?

YES -

Go to step 37.

NO -

Short to ground in the floor wire harness between the right side impact sensor (first) and the right side impact sensor (second); replace the floor

wire harness, then clear the DTC.?

37. Reconnect the negative cable to the battery.

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

39. Measure the voltage between body ground and floor wire harness 2P connector (right side impact sensor (second)) terminals No. 1 and No. 2

individually. There should be less than 0.2 V.

Is the voltage as specified?

YES -

Go to step 40.

NO -

Short to power in the floor wire harness between the right side impact sensor (first) and the right side impact sensor (second); replace the floor

wire harness, then clear the DTC.?

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

41. Measure the resistance between floor wire harness 4P connector (right side impact sensor (first)) terminals No. 1 and No. 4 and floor wire

harness 2P connector (right side impact sensor (second)) terminals No. 1 and No. 2. There should be less than 1.0 Ohms.

2010 Acura Truck MDX V6-3.7L Page 239

Is the resistance as specified?

YES -

Faulty SRS unit or poor connection at SRS unit connector A (39P) and the SRS unit. Check the connection between the connector and the SRS

unit. If the connection is OK, 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 -

Short to ground in the dashboard wire harness; replace the dashboard wire harness, then clear the DTC.?

12-1

SH AWD DTC Troubleshooting: 12-1, 12-2, 12-3

DTC 12-1, 12-2, 12-3:

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

Are any lateral acceleration 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 LATERAL

ACCELERATION 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

2010 Acura Truck MDX V6-3.7L Page 220

Is the resistance as specified?

YES -

Faulty SRS unit or poor connection at SRS unit connector A (39P) and the SRS unit. Check the connection between the connector and the SRS

unit. If the connection is OK, 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 -

Short to another wire in the dashboard wire harness; replace the dashboard wire harness, then clear the DTC.?

11-4x

SRS DTC Troubleshooting: 11-1x, 11-2x, 11-4x, 11-5x

DTC 11-1x ("x" can be 0 thru 9 or A thru F):

Open in the Driver's Airbag First Inflator

DTC 11-2x ("x" can be 0 thru 9 or A thru F):

Increased Resistance in the Driver's Airbag First Inflator

DTC 11-4x ("x" can be 0 thru 9 or A thru F):

Open in the Driver's Airbag Second Inflator

DTC 11-5x ("x" can be 0 thru 9 or A thru F):

Increased Resistance in the Driver's Airbag Second Inflator

Special Tools Required

- SRS Inflator Simulator 07SAZ-TB4011A

- SRS Simulator Lead J 070AZ-SNAA100

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 11-1x, 11-2x, 11-4x, or 11-5x indicated?

2010 Acura Truck MDX V6-3.7L Page 639

Is the resistance as specified?

YES -

Replace the E-pretensioner unit, See: Restraints and Safety Systems/Seat Belt Systems/Seat Belt Tensioner/Service and Repair/Removal and

Replacement then clear the DTC.?

NO -

Short to ground in the left engine compartment wire harness or the dashboard wire harness or the floor wire harness; repair the faulty harness, then

clear the DTC.?

76-33

SRS DTC Troubleshooting: 76-33, 76-34

DTC 76-33:

Faulty F-CAN Communication or Internal Failure of the E-Pretensioner Unit (PGM-FI System)

DTC 76-34:

Faulty F-CAN Communication or Internal Failure of the E-Pretensioner Unit (A/T System)

NOTE: Before doing this troubleshooting procedure, review 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.

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 76-33, or 76-34 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. Turn the ignition switch to ON (II), then wait for 10 seconds.

6. Check the MIL on the gauge.

Does the MIL indicator go off?

YES -

Go to step 7.

NO -

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

2010 Acura Truck MDX V6-3.7L Page 352

Is the resistance as specified?

YES -

Faulty SRS unit or poor connection at SRS unit connector B (39P) and the SRS unit. Check the connection; if the connection is OK, 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 -

Short to another wire in the floor wire harness; replace the floor wire harness, then clear the DTC.?

32-8x

SRS DTC Troubleshooting: 32-8x

DTC 32-8x ("x" can be 0 thru 9 or A thru F):

Short to Power in the Front Passenger's Side Airbag Inflator

Special Tools Required

- SRS Inflator Simulator 07SAZ-TB4011A

- SRS Simulator Lead L 070AZ-SNAA300

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 32-8x 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. Disconnect the floor wire harness 2P connector (A) from the front passenger's side airbag (B).

2010 Acura Truck MDX V6-3.7L Page 487

Is the resistance as specified?

YES -

Disconnect and reconnect the connector, and then check DTC again. 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.

NO -

Open in the floor wire harness between the right side impact sensor (first) and the right side impact sensor (second); replace the floor wire harness,

then clear the DTC.?

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

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

right 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 harness 2P connector and right 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?

YES -

Go to step 44.

NO -

Replace the floor wire harness, then clear the DTC.?

44. Substitute a known-good side impact sensor.

45. Exchange the right side impact sensor (first) for the impact sensor prepared in step 44.

46. Reconnect the negative cable to the battery.

47. Clear the DTCs with the HDS.

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

49. Check for DTCs with the HDS.

Is DTC 44-11 indicated?

2010 Acura Truck MDX V6-3.7L Page 438

Is the resistance as specified?

YES -

Disconnect and reconnect the connector, and then check DTC again. 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.?

NO -

Open in the floor wire harness between the SRS unit and the left side impact sensor (first); replace the floor wire harness, then clear the DTC.?

43-2x

SRS DTC Troubleshooting: 43-2x, 43-8x, 43-9x, 43-Ax, 43-Bx

DTC 43-2x, 43-8x, 43-9x, 43-Ax, 43-Bx ("x" can be 0 thru 9 or A thru F):

Internal Failure of the Left Side Impact Sensor (first)

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 43-2x, 43-8x, 43-9x, 43-Ax, or 43-Bx indicated?

YES -

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

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

2010 Acura Truck MDX V6-3.7L Page 630

Is the resistance as specified?

YES -

Faulty E-pretensioner unit or poor connection at E-pretensioner unit connector B (14P) and the E-pretensioner unit. Check the connection between

the connector and the E-pretensioner unit. If the connection is OK, replace the E-pretensioner unit See: Restraints and Safety Systems/Seat Belt

Systems/Seat Belt Tensioner/Service and Repair/Removal and Replacement.?

NO -

Go to step 7.

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

8. Disconnect the floor wire harness 2P connector from the front passenger's E-pretensioner motor See: Restraints and Safety Systems/Seat Belt

Systems/Seat Belt/Service and Repair/Front Seat Belt Replacement.

9. Measure the resistance between E-pretensioner motor 2P connector terminals No. 1 and No. 2. There should be less than 1.0 Ohms.

Is the resistance as specified?

YES -

Open in the floor wire harness; replace the floor wire harness, then clear the DTC.?

NO -

Faulty front passenger's E-pretensioner motor; 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.?

74-24

SRS DTC Troubleshooting: 74-24

DTC 74-24:

Short to Ground in the Front Passenger's E-pretensioner Motor

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.

1. Clear the DTCs with the HDS.

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

3. Do the function test for the E-Pretensioner with HDS. Select SRS, function test, then select E-Pretensioner and follow the screen prompts on

2010 Acura Truck MDX V6-3.7L Page 294

Is the resistance as specified?

YES -

Faulty SRS unit or poor connection at SRS unit connector B (39P) and the SRS unit. Check the connection; if the connection is OK, 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 -

Open or increased resistance in the floor wire harness; replace the floor wire harness, then clear the DTC.?

21-3x

SRS DTC Troubleshooting: 21-3x

DTC 21-3x ("x" can be 0 thru 9 or A thru F):

Short to Another Wire or Decreased Resistance in the Driver's Seat Belt tensioner

Special Tools Required

- SRS Inflator Simulator 07SAZ-TB4011A

- SRS Simulator Lead K 070AZ-SNAA200

- SRS Short Canceller 070AZ-SAA0100

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 21-3x 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 driver's seat belt tensioner.

2010 Acura Truck MDX V6-3.7L Page 340

Is the resistance as specified?

YES -

Faulty SRS unit or poor connection at SRS unit connector B (39P) and the SRS unit. Check the connection; if the connection is OK, 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 -

Short to ground in the floor wire harness; replace the floor wire harness, then clear the DTC.?

TPMS System

TPMS DTC Troubleshooting: 32, 34, 36, 38

DTC 32, 34, 36, 38:

Tire Pressure Sensor Signal Failure

NOTE:

- Inspect for an aftermarket electrical device(s) (such as an inverter, battery charger, CB radio, etc) interfering with the RF signal from the

sensors when turning the ignition switch is ON (II).

- Vehicle must be driven for 3 minutes at 15 mph (24 km/h) or more for DTC 32, 34, 36, or 38 to set.

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

2. Check the DTC indicated to the tire location to make sure the wheel is a TPMS type with the tire pressure sensor.

Is a TPMS type wheel with a tire pressure sensor mounted on the vehicle?

YES -

Go to step 3.

NO -

Install a TPMS type wheel, and memorize the sensor ID. Drive the vehicle above 15 mph (24 km/h) for 40 continuous seconds, or memorize the

ID with the HDS See: Instrument Panel, Gauges and Warning Indicators/Tire Monitoring System/Tire Pressure Sensor/Testing and Inspection.?

3. Test-drive the vehicle.

4. Check the VEHICLE SPEED in the TPMS DATA LIST with the HDS.

Is the vehicle speed indicated?

YES -

Go to step 8.

NO -

Go to step 5.

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

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

7. Check for DTCs with the HDS.

2010 Acura Truck MDX V6-3.7L Page 507

Is the resistance as specified?

YES -

Go to step 20.

NO -

Repair an open in the wire between the ACC unit and the right front brake fluid pressure sensor.?

20. Remove the jumper wire from the right front brake fluid pressure sensor.

21. Reconnect all connectors.

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

23. Measure the voltage between ACC unit 20P connector terminals No. 3 and No. 5. There should be about 5 V.

Is the voltage as specified?

YES -

Go to step 24.

NO -

Check for loose or poor connections. If OK, update the ACC unit See: Cruise Control/Testing and Inspection/Programming and Relearning, then

recheck. If the ACC unit was already updated, replace the ACC unit See: Cruise Control/Cruise Control Module/Service and Repair.?

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

25. Disconnect the ACC unit 20P connector.

26. Measure the resistance between ACC unit 20P connector terminal No. 6 and body ground. There should be an open circuit or at least 1

MOhms.

Is the resistance as specified?

2010 Acura Truck MDX V6-3.7L Page 479

Is the resistance as specified?

YES -

Go to step 20.

NO -

Repair an open in the wire between the ACC unit and the left front brake fluid pressure sensor.?

20. Remove the jumper wire from the left front brake fluid pressure sensor.

21. Reconnect all connectors.

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

23. Measure the voltage between ACC unit 20P connector terminals No. 3 and No. 5. There should be about 5 V.

Is the voltage as specified?

YES -

Go to step 24.

NO -

Check for loose or poor connections. If OK, update the ACC unit See: Cruise Control/Testing and Inspection/Programming and Relearning, then

recheck. If the ACC unit was already updated, replace the ACC unit See: Cruise Control/Cruise Control Module/Service and Repair.?

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

25. Disconnect the ACC unit 20P connector.

26. Measure the resistance between ACC unit 20P connector terminal No. 14 and body ground. There should be an open circuit or at least 1

MOhms.

Is the resistance as specified?

2010 Acura Truck MDX V6-3.7L Page 577

Is the resistance as specified?

YES -

Go to step 12.

NO -

Repair a short in the wires between the ACC unit and the branch of the F-CAN B line (F-CAN B H, F-CAN B L).?

12. Check for continuity between ACC unit 20P connector terminal No.7 and VSA modulator-control unit 46P connector terminal No.22, and

between ACC unit 20P connector terminal No.18 and VSA modulator-control unit 46P connector terminal No.1.

Is there continuity?

YES -

Faulty ACC unit; replace the ACC unit See: Cruise Control/Cruise Control Module/Service and Repair.?

NO -

Repair an open in the wire between the ACC unit and the branch of the F-CAN B line (F-CAN B H, F-CAN B L).?

VSA System

VSA DTC Troubleshooting: 59

DTC 59:

BRK DIAG Signal High Voltage

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 LOCK (0).

2. Check the brake lights without pressing the brake pedal.

Are the brake lights on?

YES -

Replace the brake light relay.?

2010 Acura Truck MDX V6-3.7L Page 591

Is the resistance as specified?

YES -

Go to step 15.

NO -

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.?

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

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

17. Measure the resistance between SRS unit connector B (39P) terminal No. 19 and the driver's seat wire harness 3P connector terminal No. 2.

There should be less than 1.0 Ohms.

Is the resistance as specified?

YES -

Faulty SRS unit or poor connection at SRS unit connector B (39P) and the SRS unit. Check the connection between the connector and the SRS

unit. If the connection is OK, 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 -

Open in the driver's seat wire harness, floor wire harness, or poor connection. Check the connection; if the connection is OK, replace the faulty

harness, then clear the DTC.?

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

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

2010 Acura Truck MDX V6-3.7L Page 649

Is the resistance as specified?

YES -

Replace the E-pretensioner unit See: Restraints and Safety Systems/Seat Belt Systems/Seat Belt Tensioner/Service and Repair/Removal and

Replacement, then clear the DTC.?

NO -

Short to ground in the right engine compartment wire harness or the dashboard wire harness or the floor wire harness; replace the faulty harness,

then clear the DTC.?

76-47

SRS DTC Troubleshooting: 76-47

DTC 76-47:

Faulty Power Supply to the Front Passenger's E-pretensioner Motor

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.

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 76-47 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. Check the No. 6 (30 A) fuse in the under-hood fuse/relay box.

Are the fuses OK?

YES -

Go to step 6.

NO -

Replace the faulty fuse, then turn the ignition switch to ON (II), then wait for 10 seconds. If the fuse blows again, check for a short in the No. 6

(30 A) fuse circuit (floor wire harness or right engine compartment wire harness); replace the faulty harness, then clear the DTC, and retest. If the

DTC is still present, replace the under-hood fuse/relay box See: Maintenance/Fuses and Circuit Breakers/Fuse Block/Service and

Repair/Under-Hood Fuse/Relay Box Removal and Installation, then clear the DTC.?

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

2010 Acura Truck MDX V6-3.7L Page 502

Is the resistance as specified?

YES -

Go to step 23.

NO -

Repair a short in the wire between the PRESS FR line and VCC line.?

23. Connect right front brake fluid pressure sensor 3P connector terminal No. 1 to body ground with a jumper wire.

24. Measure the resistance between ACC unit 20P connector terminal No. 3 and body ground. There should be less than 1.0 Ohms.

Is the resistance as specified?

YES -

Go to step 25.

NO -

Repair an open in the wire between the ACC unit and the right front brake fluid pressure sensor.?

25. Remove the jumper wire from the right front brake fluid pressure sensor.

26. Reconnect all connectors.

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

28. Check the brake switch signal (BRAKE SW (N. O.)) with the HDS.

Does the indication show ON when the brake pedal is pressed, and show OFF when the brake pedal is released?

2010 Acura Truck MDX V6-3.7L Page 326

Is the resistance as specified?

YES -

Go to step 20.

NO -

Repair a short to ground in the wire between the ACC unit and the brake light relay, or between the ACC unit and the brake lights circuits.?

20. Measure the resistance between ACC unit 20P connector terminal No. 1 and brake light relay 5P connector terminal No. 1. There should be

less than 1.0 Ohms.

Is the resistance as specified?

YES -

Check for loose or poor connections. If OK, update the ACC unit See: Cruise Control/Testing and Inspection/Programming and Relearning, then

recheck. If the ACC unit was already updated, replace the ACC unit See: Cruise Control/Cruise Control Module/Service and Repair.?

NO -

Repair an open in the wire between the ACC unit and the brake light relay.?

21. Test the brake light relay See: Power and Ground Distribution/Testing and Inspection/Power Relay Test.

Is the relay OK?

YES -

Go to step 22.

NO -

Replace the relay, and recheck.?

22. Remove the brake light relay.

23. Measure the voltage between brake light relay 5P connector terminal No. 2 and body ground. There should be battery voltage.