2010 Acura Truck MDX V6-3.7L Page 145

Is there continuity?

YES -

Replace the power tailgate control unit.?

NO -

Repair an open in the wire.?

B1379

DTC Troubleshooting: B1379

DTC B1379:

Power Tailgate Left Pinch Sensor Circuit Malfunction

1. Open the tailgate manually or with the keyless transmitter.

2. Close the tailgate with the keyless transmitter or driver's door power tailgate switch.

3. Turn the ignition switch to LOCK (0) and then back to ON (II).

4. Clear the DTCs with the HDS.

5. Check for DTCs with the HDS.

Is DTC B1379 indicated?

YES -

Go to step 6.

NO -

Intermittent failure, the system is OK at this time. Check for loose or poor connections between the power tailgate control unit and the power

tailgate left pinch sensor.?

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

7. Disconnect the 2P connector from the power tailgate left pinch sensor.

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

9. Measure the voltage between harness side of power tailgate left pinch sensor 2P connector terminals No. 2 (+) and No. 1 (-).

2010 Acura Truck MDX V6-3.7L Page 221

Is there battery voltage when the tilt switch is operated?

YES -

Faulty power tilt motor/position sensor, replace the tilt motor assembly.?

NO -

Replace the power tilt/telescopic steering control unit.?

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

27. Disconnect power tilt/telescopic steering control unit connector B (8P).

28. Disconnect the power tilt motor/position sensor 8P connector.

29. Check for continuity between power tilt/telescopic steering control unit connector B (8P) terminals No. 7 and No. 8 and power tilt

motor/position sensor 8P connector terminals No. 2 and No. 3 respectively.

Is there continuity?

YES -

Go to step 30.

NO -

Repair an open in the wire.?

30. Check for continuity between body ground and power tilt motor/position sensor 8P connector terminals No. 2 and No. 3 individually.

2010 Acura Truck MDX V6-3.7L Page 198

Is DTC B1836 also indicated?

YES -

Go to the DTC B1836 troubleshooting See: B1836.?

NO -

Go to step 6.

6. Check for DTCs with the HDS.

Are DTCs B1825, B1827 and/or B1828 also indicated?

YES -

Go to step 17.

NO -

Go to step 7.

7. Turn the ignition switch to LOCK (0) and then back to ON (II).

8. Operate the front up-down switch for 2 seconds, and check the front up-down motor operation.

Does the front up-down motor run smoothly?

YES -

Go to step 9.

NO -

Go to step 26.

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

10. Disconnect power seat control unit connector A (40P).

11. Disconnect the front up-down position sensor 4P connector.

12. Check for continuity between power seat control unit connector A (40P) terminals No. 12 and No. 29 and front up-down position sensor 4P

connector terminals No. 2 and No. 3 respectively.

Is there continuity?

YES -

Go to step 13.

NO -

Repair an open in the wire.?

13. Check for continuity between power seat control unit connector A (40P) terminal No. 12 and body ground.

2010 Acura Truck MDX V6-3.7L Page 30

Go to step 11.

NO -

Repair a short to power in the wire between the rear fuse/relay box and the affected control unit.?

11. Check for continuity between under-dash fuse/relay box connector N (45P) terminal No. 22 and body ground.

Is there continuity?

YES -

Repair a short to ground in the wire.?

NO -

Go to step 12.

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

13. Measure the voltage between under-dash fuse/relay box connector N (45P) terminal No. 22 and body ground.

Is there battery voltage?

YES -

Repair a short to power in the wire.?

NO -

Faulty MICU, replace the under-dash fuse/relay box.?

B1001

DTC Troubleshooting: B1001, B1002

DTC B1001:

MICU Internal Error (CPU error)

2010 Acura Truck MDX V6-3.7L Page 275

Replace the right power mirror.?

NO -

Replace the front passenger's MPCS unit.?

B2186

DTC Troubleshooting: B2186

DTC B2186:

Front Passenger's Door Lock Switch LOCK/UNLOCK Signal Error

NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A See: Powertrain

Management/Computers and Control Systems/Information Bus/Testing and Inspection/Component Tests and General Diagnostics/Troubleshooting

- B-CAN System Diagnosis Test Mode A.

1. Clear the DTCs with the HDS.

2. Turn the ignition switch to LOCK (0) and then back to ON (II).

3. Lock and unlock the front passenger's door with the front passenger's door lock switch.

4. Check for DTCs with the HDS.

Is DTC B2186 indicated?

YES -

Go to step 5.

NO -

Intermittent failure, the front passenger's door lock switch system is OK at this time. Check for loose or poor connections between the front

passenger's MPCS unit and the front passenger's door lock switch.?

5. With the front passenger's door lock switch in the neutral position, select the DOOR LOCK from the BODY ELECTRICAL SYSTEM

SELECT menu, and enter the DATA LIST.

6. Check the ON/OFF information of the Front Passenger's Door Lock Switch (LOCK) and Front Passenger's Door Lock Switch (UNLOCK).

Are both information indicators OFF?

YES -

Go to step 7.

NO -

Go to step 8.

7. Operate the front passenger's door lock switch in the LOCK and UNLOCK positions, and check the ON/OFF information of the Front

Passenger's Door Lock Switch (LOCK) and Front Passenger's Door Lock Switch (UNLOCK).

Are both the Front Passenger's Door Lock Switch (LOCK) and Front passenger's Door Lock Switch (UNLOCK) information indicators ON at the

same time when the door lock switch is in the LOCK or UNLOCK position?

YES -

Do the door lock switch test See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Keyless Entry/Testing and

Inspection/Component Tests and General Diagnostics/Power Door Lock Switch Test. If the switch is OK, repair a short between the wires.?

NO -

Replace the front passenger's MPCS unit.?

8. Disconnect the front passenger's door lock switch 5P connector.

9. Check the ON/OFF information of the Front Passenger's Door Lock Switch (LOCK) and Front Passenger's Door Lock Switch (UNLOCK).

Are both information indicators OFF?

2010 Acura Truck MDX V6-3.7L Page 96

YES -

Repair a short in the wires between the climate control unit and the outside air temperature sensor.?

NO -

Substitute a known-good climate control unit, and recheck. If the symptom/indication goes away, replace the original climate control unit See:

Heating and Air Conditioning/Control Assembly/Service and Repair/Climate Control Unit Removal/Installation.?

B1229

DTC Troubleshooting: B1229 (E and AUTO)

DTC B1229 or DTC indicator E and AUTO:

An Open in the Sunlight Sensor Circuit

1. Clear the DTCs with the HDS.

2. Turn the ignition switch to LOCK (0) and then back to ON (II).

3. Do the self-diagnostic function with the HDS or the climate control unit.

4. Check for DTCs.

Is DTC B1229 or E and AUTO indicated?

YES -

Go to step 5.

NO -

Intermittent failure, check for loose wires or poor connections in the sunlight sensor circuit.?

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

6. Disconnect the sunlight sensor 5P connector.

7. Disconnect climate control unit connector A (40P).

8. Check for continuity between climate control unit connector A (40P) terminal No. 29 and sunlight sensor 5P connector terminal No. 4.

Is there continuity?

YES -

Go to step 9.

NO -

Repair an open in the wire between the climate control unit and the sunlight sensor.?

9. Check for continuity between climate control unit connector A (40P) terminal No. 8 and sunlight sensor 5P connector terminal No. 2.

2010 Acura Truck MDX V6-3.7L Page 71

2. Turn the ignition switch to LOCK (0), and then back to ON (II).

3. Wait for at least 6 seconds.

4. Check for DTCs with the HDS.

Is DTC B1182 indicated?

YES -

Go to step 5.

NO -

Intermittent failure, the system is OK at this time. Check for loose or poor connections between the gauge control module and the driver's MPCS

unit.?

5. Check for DTCs with the HDS.

Are DTCs B1013, B1015, B1065, B1356, and B1905 indicated with DTC B1182?

YES -

Do the driver's MPCS unit input test See: Powertrain Management/Computers and Control Systems/Information Bus/Testing and

Inspection/Component Tests and General Diagnostics/Drivers MPCS Unit Input Test.?

NO -

Do the gauge control module input test See: Instrument Panel, Gauges and Warning Indicators/Testing and Inspection/Component Tests and

General Diagnostics/Gauge Control Module Input Test.?

B1187

DTC Troubleshooting: B1187

DTC B1187:

Gauge Control Module Lost Communication with SRS Unit (SRS Message)

NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A See: Powertrain

Management/Computers and Control Systems/Information Bus/Testing and Inspection/Component Tests and General Diagnostics/Troubleshooting

- B-CAN System Diagnosis Test Mode A.

1. Clear the DTCs with the HDS.

2. Turn the ignition switch to LOCK (0), and then back to ON (II).

3. Wait for at least 6 seconds.

4. Check for DTCs with the HDS.

Is DTC B1187 indicated?

YES -

Go to step 5.

NO -

Intermittent failure, the system is OK at this time. Check for loose or poor connections between the gauge control module and the SRS unit.?

5. Check for SRS DTCs with the HDS.

Are there any DTCs indicated?

YES -

Go to and troubleshoot the indicated DTCs, then recheck.