2010 Acura Truck MDX V6-3.7L Page 45

1. Clear the DTCs with the HDS.

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

3. Turn the windshield wiper switch ON for 5 seconds and OFF.

4. Check for DTCs with the HDS.

Is DTC B1076 indicated?

YES -

Go to step 5.

NO -

Intermittent failure, the system is OK at this time. Check for loose or poor connections.?

5. Select BODY ELECTRICAL SYSTEM SELECT menu, then enter the DATA LIST menu.

6. Check the ON/OFF information of the Windshield wiper switch (BACK-UP) with the HDS.

Is OFF indicated?

YES -

Go to step 7.

NO -

Check for a short in the wire between the combination switch control unit and the relay control module (BACK-UP WIPER line), if the harness is

OK, replace the combination switch control unit See: Sensors and Switches/Sensors and Switches - Wiper and Washer Systems/Wiper

Switch/Service and Repair.?

7. Turn the windshield wiper switch ON.

8. Check the ON/OFF information of the Windshield wiper switch (BACK-UP) with the HDS.

Is ON indicated?

YES -

Go to the relay control module input test See: Power and Ground Distribution/Testing and Inspection/Relay Control Module Input Test and check

for a poor ground, if the GND line is OK, 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.?

NO -

Check for an open in the wire between the combination switch control unit and the relay control module (BACK-UP WIPER line), if the wire is

OK, replace the combination switch control unit See: Sensors and Switches/Sensors and Switches - Wiper and Washer Systems/Wiper

Switch/Service and Repair.?

B1077

DTC Troubleshooting: B1077

DTC B1077:

Windshield Wiper Motor (Park) Signal Error

1. Turn the ignition switch to ON (II), and the windshield wiper switch ON.

2. Check the windshield wiper operation.

2010 Acura Truck MDX V6-3.7L Page 79

1. Clear the DTCs with the HDS.

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

3. Wait for 6 seconds or more.

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

5. Check for DTCs.

Are DTCs B1205, and/or B1206 or AUTO, and/or B1207 indicated?

YES -

Go to step 6.

NO -

Intermittent failure, check for loose wires or poor connections in the climate control unit connector A (40P).?

6. Check for DTCs using the HDS.

Are any of the following DTCs indicated; B1011, B1060,B2160, B1357, B1805, B1408, or B2157?

YES -

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.?

NO -

Do the climate control unit troubleshooting See: Heating and Air Conditioning/Control Assembly/Testing and Inspection.?

B1207

DTC Troubleshooting: B1205 (AUTO), B1206 (AUTO), B1207 (AUTO)

DTC B1205:

Climate Control Unit Lost Communication with Gauge Control Module (VSP/NE message)

DTC B1206 or DTC indicator AUTO:

Climate Control Unit Lost Communication with Gauge Control Module (ECT message)

DTC B1207:

Climate Control Unit Lost Communication with Gauge Control Module (ILLUMI message)

NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in the 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 6 seconds or more.

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

5. Check for DTCs.

Are DTCs B1205, and/or B1206 or AUTO, and/or B1207 indicated?

2010 Acura Truck MDX V6-3.7L Page 264

1. Clear the DTCs with the HDS.

2. Lock and unlock the driver's door with the driver's door lock switch.

3. Check for DTCs with the HDS.

Is DTC B2180 indicated?

YES -

Go to step 4.

NO -

Intermittent failure, the system is OK at this time. Check for loose or poor connections between the driver's MPCS unit and the driver's door lock

switch.?

4. With the driver's door lock switch in the neutral position, select the DOOR LOCK from the BODY ELECTRICAL SYSTEM SELECT

menu, and enter the DATA LIST.

5. Check the ON/OFF Information of the Driver's Door Lock Switch (LOCK) and Driver's Door Lock Switch (UNLOCK).

Are both information indicators OFF?

YES -

Go to step 6.

NO -

Go to step 7.

6. Operate the driver's door lock switch in the LOCK and UNLOCK positions, and check the ON/OFF information of the Driver's Door Lock

Switch (LOCK) and Driver's Door LOCK Switch (UNLOCK).

Are both Driver's Door LOCK Switch (LOCK) and Driver'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 driver's MPCS unit.?

7. Disconnect the driver's door lock switch 5P connector.

8. Check the ON/OFF information of the Driver's Door Lock Switch (LOCK) and Driver's Door Lock Switch (UNLOCK).

Are both information indicators OFF?

YES -

Faulty driver's door lock switch.?

NO -

Go to step 9.

9. Disconnect driver's MPCS unit connector A (40P).

10. Check for continuity between body ground and driver's door lock switch 5P connector terminals No. 3 and No. 4 individually.

2010 Acura Truck MDX V6-3.7L Page 250

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.

Are DTCs B2155, B2156, and/or B2161 indicated?

YES -

Go to step 5.

NO -

Intermittent failure, the system is OK at this time. Check for loose or poor connections between the driver's MPCS unit and the MICU.?

5. Check for DTCs with the HDS.

Are DTCs B1055, B1057, B1157, B1159, B1255, B1355, B1806, B1810, B1811, and/or B1955 also indicated?

YES -

Faulty MICU, replace the under-dash fuse/relay box See: Maintenance/Fuses and Circuit Breakers/Fuse Block/Service and Repair/Under-Dash

Fuse/Relay Box Removal and Installation.?

NO -

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.?

B2162

DTC Troubleshooting: B2162

DTC B2162:

Driver's MPCS Unit Lost Communication with Relay Control Module (RM 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 B2162 indicated?

YES -

Go to step 5.

NO -

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

module.?

5. Check for DTCs with the HDS.

Are DTCs B1005, B1158, B1959, and/or B2970 also indicated?

YES -

Do the relay control module input test See: Power and Ground Distribution/Testing and Inspection/Relay Control Module Input Test.?

2010 Acura Truck MDX V6-3.7L Page 103

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 B1234 or K and AUTO indicated?

YES -

Go to step 5.

NO -

Intermittent failure, check for looses wires or poor connections in the driver's air mix control motor circuit.?

5. Check for DTCs.

Are these DTCs also present; B1237 or N and AUTO, and/or B1245 or G, and/or B2968 or A and WINDSHIELD DEFROST, and/or B2980 or B

and WINDSHIELD DEFROST?

YES -

Go to step 13.

NO -

Go to step 6.

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

7. Test the driver's air mix control motor See: Heating and Air Conditioning/Testing and Inspection/Component Tests and General

Diagnostics/Driver's Air Mix Control Motor Test.

Is the driver's air mix control motor OK?

YES -

Go to step 8.

NO -

Replace the driver's air mix control motor See: Heating and Air Conditioning/Air Door/Air Door Actuator / Motor/Service and Repair/Driver's Air

Mix Control Motor Replacement.?

8. Disconnect the driver's air mix control motor 7P connector.

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

10. Check for continuity between climate control unit connector A (40P) terminal No. 11 and body ground.

Is there continuity?

YES -

Repair a short to body ground in the wire between the climate control unit and the driver's air mix control motor.?

2010 Acura Truck MDX V6-3.7L Page 32

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 B1005 indicated?

YES -

Go to step 5.

NO -

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

5. Check for DTCs with the HDS.

Are DTCs B1158, B1959, B2162, and B2970 also indicated with B1005?

YES -

Do the relay control module input test See: Power and Ground Distribution/Testing and Inspection/Relay Control Module Input Test.?

NO -

Do the MICU input test See: Powertrain Management/Computers and Control Systems/Information Bus/Testing and Inspection/Component Tests

and General Diagnostics/MICU Input Test.?

B1007

DTC Troubleshooting: B1007

DTC B1007:

MICU Lost Communication with Combination Switch Control Unit (HLSW 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 B1007 indicated?

YES -

Go to step 5.

NO -

Intermittent failure, the system is OK at this time. Check for loose or poor connections between the MICU and the combination switch control

unit.?

5. Check for DTCs with the HDS.

Are DTCs B1062, B1155, and B1957 also indicated with DTC B1007?

YES -

Do the combination switch control unit input test See: Wiper and Washer Systems/Testing and Inspection/Wiper/Washer Switch (Combination

Switch Control Unit) Input Test.?

2010 Acura Truck MDX V6-3.7L Page 69

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 B1168, B1169, and/or B1178 indicated?

YES -

Go to step 5.

NO -

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

5. Check for Fuel and Emissions Systems DTCs with the HDS.

Are there any DTCs indicated?

YES -

Go to and troubleshoot the indicated DTCs, then recheck.?

NO -

Go to step 6.

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

7. Disconnect gauge control module connector A (12P).

8. Jump the SCS line with the HDS.

9. Disconnect PCM connector A (49P).

10. Check for continuity between PCM connector A (49P) terminals No. 48 and No. 49 and gauge control module connector A (12P) connector

terminals No. 12 and No. 6 respectively.

Is there continuity?

YES -

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, and recheck. If the indication goes

away, replace the original PCM See: Powertrain Management/Computers and Control Systems/Engine Control Module/Service and Repair. If the

DTC is still present, replace the gauge control module See: Instrument Panel, Gauges and Warning Indicators/Instrument Cluster / Carrier/Service

2010 Acura Truck MDX V6-3.7L Page 407

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 41-1x 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. Check the connections between SRS unit connector A (39P) and the SRS unit, between the left engine compartment wire harness 2P

connector and the left front impact sensor See: Restraints and Safety Systems/Air Bag Systems/Impact Sensor/Service and Repair/Front

Impact Sensor Replacement.

Are the connections OK?

YES -

Go to step 7.

NO -

Repair the poor connections, then clear the DTC, and retest.?

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

8. Disconnect the left engine compartment wire harness 2P connector from the left front impact sensor.

9. Measure the resistance between SRS unit connector A (39P) terminals No. 36 and No. 37. There should be an open circuit or at least 1

MOhms.

Is the resistance as specified?

YES -

Go to step 10.

NO -

Short to another wire in the left engine compartment wire harness or the dashboard wire harness; replace the faulty harness, then clear the DTC.?

10. Measure the resistance between body ground and SRS unit connector A (39P) terminals No. 36 and No. 37 individually. There should be an

open circuit or at least 1 MOhms.

2010 Acura Truck MDX V6-3.7L Page 411

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 41-2x, 41-8x, 41-9x, 41-Ax, or 41-Bx indicated?

YES -

Faulty left front impact sensor; replace the left front impact sensor See: Restraints and Safety Systems/Air Bag Systems/Impact Sensor/Service and

Repair/Front Impact Sensor 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.?

41-4

SH AWD DTC Troubleshooting: 41-4

DTC 41-4:

F-CAN Malfunction (Lost Communication with A/T Control Unit)

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 PGM-FI system with the HDS.

Are there any PGM-FI system DTCs indicated?

YES -

Go to the indicated DTC's troubleshooting.?

NO -

Go to step 3.

3. Clear the DTC with the HDS.

4. Start the engine.

5. Check for DTCs with the HDS.

Is DTC 41-4 indicated?

YES -

Go to step 6.

NO -

Intermittent failure, the system is OK at this time. Check for intermittent open between SH-AWD control unit connector terminals A10 and A20

and PCM connector terminals A48 and A49.?

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

7. Jump the SCS line with the HDS.

NOTE: This step must be done to prevent PCM damage.

8. Disconnect PCM connector A (49P).

9. Disconnect SH-AWD control unit connector A (20P).

10. Check for continuity between PCM connector terminals A48, A49 and SH-AWD control unit connector terminals A10, A20 respectively.

2010 Acura Truck MDX V6-3.7L Page 351

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 32-3x 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. Disconnect the floor wire harness 2P connector (A) from the front passenger'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 32-3x indicated?

YES -

Go to step 11.

NO -

Short to another wire in the front passenger's side airbag inflator; replace the front passenger's side airbag See: Restraints and Safety Systems/Air

Bag Systems/Air Bag/Service and Repair/Removal and Replacement/Side 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 the SRS simulator lead. Do not disconnect the simulator lead from the floor wire harness 2P

connector.

15. Connect the SRS short canceller (070AZ-SAA0100) to SRS unit connector B (39P) terminals No. 8 and No. 9.

16. Measure the resistance between the terminals of the black SRS simulator lead (A). There should be an open circuit or at least 1 MOhms.

2010 Acura Truck MDX V6-3.7L Page 379

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 34-3x 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 quarter pillar trim, then disconnect the floor wire harness 2P connector (A) from the right side curtain 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 34-3x indicated?

YES -

Go to step 11.

NO -

Short to another wire in the right side curtain airbag inflator; replace the right side curtain airbag See: Restraints and Safety Systems/Air Bag

Systems/Air Bag/Service and Repair/Removal and Replacement/Side Curtain 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 the SRS simulator lead. Do not disconnect the simulator lead from the floor wire harness 2P

connector.

15. Connect the SRS short canceller (070AZ-SAA0100) to SRS unit connector B (39P) terminals No. 24 and No. 25.

16. Measure the resistance between the terminals of the black SRS simulator lead (A). There should be an open circuit or at least 1 MOhms.