Driver Position Memory System (dpms) Acura ZDX I

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System Description

The driver's seat, the power mirrors, and the tile/telescopic steering have a memory feature. All the adjustments can be memorized by pressing the SET button on the driving position memory switch, and then pressing one of two position buttons within 5 seconds. Pressing the appropriate position button will move the seat, the mirrors, and the steering to the memorized positions.

Along with the seat, mirror, and steering settings, the power door lock settings can also be memorized based on which remote (Driver 1 or Driver 2) is used.

This system is integrated with the multiplex integrated control system, and has 9 wake-up and sleep modes. All digital signals are sent via shared B-CAN and UART communication lines. For more information about communication line and wake-up/sleep mode, refer to the Multiplex Integrated Control System Description (see SYSTEM DESCRIPTION ).

Disconnecting the battery erases the memorized positions.

Memorizing a Seat, Mirror, and Steering Position

Move the seat, the mirrors, and the steering to the desired position. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

Press and hold the SET button on the driver's position memory switch. A single beep is heard and both of the green LEDs will begin to flash. Press No. 1 or No. 2 to match the remote that is to be used. There are two more beeps confirming that the seat, the mirror, and the steering positions are memorized. The green LEDs remains lit, unless the seat and the mirrors are moved from the memorized position.

Memorized Position Recall with the Remotes

After the seat, the mirror, and the steering positions are memorized, the seat, the mirror, and the steering move to the position when the appropriate remote UNLOCK button is pressed and the driver's door is opened. When the seat, the mirror, and the steering move to the memorized position, the green LED corresponding with that remote stays lit until the position is changed or the key is turned to LOCK (0), or engine start/stop button is pressed to select the OFF mode.

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Power Seat Position Sensors

Each motor has a sensor that detects motor rotation and sends a pulse to the power seat control unit when the motor rotates. The control unit stores the number of pulses in its memory, and the seat position is memorized.

Power Mirror Position Sensors

Using a tilt position sensor and a swing position sensor, the power mirror control circuit in the power mirror control unit detects the voltage changes created by the mirrors moving. These voltage changes are stored in memory, and the power mirror positions are memorized for each stored driving position.

Power Tilt/Telescopic Steering Position Sensors

By means of a tilt position sensor and telescopic position sensor, the power tilt/telescopic steering control circuit in the power tilt/telescopic steering control unit detects the voltage changes caused by the movements of the steering. These voltage changes are stored in memory, and the power tilt/telescopic steering positions are memorized for each stored driving position.

Reverse Mirror Control

When the vehicle is shifted to R (shift lever in R) with the power mirror selector switch in the Left (or the Right) position, the driver's (or the passenger's) side mirror tilts down automatically to help the driver's view. The mirror returns to the previous position when the shift lever is shifted out of R. The reverse mirror control is cancelled if the power mirror selector switch is in the center position.

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DTC B1802: Power Seat Control Unit Failure

Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see 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), or press the engine start/stop button to select the OFF mode and then the ON mode.
3. Wait for at least 6 seconds.
4. Check for DTCs with the HDS. Is DTC B1802 indicated? YES -Replace the power seat control unit (see «POWER SEAT CONTROL UNIT INPUT TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-seat-control-unit-input-testreplacement) ). NO -Intermittent failure, the system is OK at this time.

DTC B1825: Slide Pulse Error (No Change in Pulse for 1 Second)

Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

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1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back to ON (II), or press the engine start/stop button to select the OFF mode and then the ON mode.
3. Operate the power seat adjustment switch for several seconds in each direction. NOTE: DTC B1825 is stored when the slide switch is operated more than 1 second after the seat moves to the most forward or backward position, even when the system is OK.
4. Check for DTCs with the HDS. Is DTC BI 825 indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time. Check for loose or poor connections.
5. Check for DTCs with the HDS. Is DTC B1836 also indicated? YES -Go to the «DTC B1836 TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__dtc-b1836-power-seat-position-sensor) . NO -Go to step 6.
6. Check for DTCs with the HDS. Are DTCs B1826, 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), or press the engine start/stop button to select the OFF mode and then the ON mode.
8. Operate the slide switch for 2 seconds, and check the slide motor operation. Does the slide motor run smoothly? YES -Go to step 9. NO -Go to step 24 .
9. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
10. Disconnect power seat control unit connector B (40P).
11. Disconnect the slide motor/position sensor 5P connector.
12. Check for continuity between power seat control unit connector B (40P) terminals No. 29 and No. 11 and slide motor/position sensor 5P connector terminals No. 3 and No. 4 respectively. Is there continuity? YES -Go to step 13. NO -Repair an open or high resistance in the wire(s).
13. Check for continuity between body ground and power seat control unit connector B (40P) terminal No. 11. Is there continuity? YES -Repair a short to ground in the wire. NO -Go to step 14.
14. Reconnect power seat control unit connector B (40P).
15. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
16. Measure the voltage between slide motor/position sensor 5P connector terminals No. 4(+) and No. 3 Is there about 5 V? YES -Replace the slide motor/position sensor (see «FRONT SEAT SLIDE MOTOR REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#seats__front-seat-slide-motor-replacement) ). NO -If there is no voltage, replace the power seat control unit (see «POWER SEAT CONTROL UNIT INPUT TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-seat-control-unit-input-testreplacement) ). If there is battery voltage, repair a short to power in the wire (sensor line).
17. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
18. Disconnect power seat control unit connector B (40P).
19. Disconnect the slide motor/position sensor 5P connector.
20. Check for continuity between power seat control unit connector B (40P) terminals No. 15 and No. 29 and slide motor/position sensor 5P connector terminals No. 2 and No. 3 respectively. Is there continuity? YES -Go to step 21. NO -Repair an open or high resistance in the wire(s).
21. Reconnect power seat control unit connector B (40P).
22. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
23. Measure the voltage between power seat control unit connector B (40P) terminals No. 15 and No. 29. Is there battery voltage when the slide switch is operated? YES -Replace the slide motor/position sensor (see «FRONT SEAT SLIDE MOTOR REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#seats__front-seat-slide-motor-replacement) ). NO -Replace the power seat control unit (see «POWER SEAT CONTROL UNIT INPUT TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-seat-control-unit-input-testreplacement) ).
24. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
25. Check the No. 19 (20 A) fuse in the driver's under-dash fuse/relay box. Is the fuse OK? YES -Go to step 26. NO -Replace the fuse. If the fuse blows again, repair a short to ground on the No. 19 (20 A) fuse circuit.
26. Measure the voltage between body ground and power seat control unit connector A (18P) terminal No. 8. Is there battery voltage? YES -Go to step 27. NO -Repair an open or high resistance in the wire between the driver's under-dash fuse/relay box and the power seat control unit.
27. Measure the voltage between body ground and power seat control unit connector A (18P) terminal No. 18 when operating the slide switch. Is there 0.2 V or more? YES -Repair an open or high resistance in the wire between the power seat control unit and body ground (G602). NO -Go to step 28.
28. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
29. Disconnect power seat control unit connector A (18P).
30. Disconnect the slide motor/position sensor 5P connector.
31. Check for continuity between power seat control unit connector A (18P) terminals No. 17 and No. 7 and slide motor/position sensor 5P connector terminals No. 1 and No. 5 respectively. Is there continuity? YES -Go to step 32. NO -Repair an open or high resistance in the wire(s).
32. Check for continuity between body ground and slide motor/position sensor 5P connector terminals No. 1 and No. 5 individually. Is there continuity? YES -Repair a short to ground in the wire(s). NO -Go to step 33.
33. Test the slide motor (see «DRIVER'S POWER SEAT MOTOR TEST»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__drivers-power-seat-motor-test) ). Is the motor OK? YES -Replace the power seat control unit (see «POWER SEAT CONTROL UNIT INPUT TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-seat-control-unit-input-testreplacement) ). NO -Replace the slide motor/position sensor (see «FRONT SEAT SLIDE MOTOR REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#seats__front-seat-slide-motor-replacement) ).

DTC B1826: Front Height Pulse Error (No Change in Pulse for 1 Second)

Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

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1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back to ON (II), or press the engine start/stop button to select the OFF mode and then the ON mode.
3. Operate the power seat adjustment switch for several seconds in each direction. NOTE: DTC B1826 is stored when the front up-down switch is operated more than 1 second after the seat moves to the most up or down position, even when the system is OK.
4. Check for DTCs with the HDS. Is DTC B1826 indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time. Check for loose or poor connections.
5. Check for DTCs with the HDS. Is DTC B1836 also indicated? YES -Go to the «DTC B1836 TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__dtc-b1836-power-seat-position-sensor) . 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), or press the engine start/stop button to select the OFF mode and then the ON mode.
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 24 .
9. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
10. Disconnect power seat control unit connector B (40P).
11. Disconnect the front up-down motor/position sensor 5P connector.
12. Check for continuity between power seat control unit connector B (40P) terminals No. 12 and No. 29 and front up-down motor/position sensor 5P connector terminals No. 5 and No. 4 respectively. Is there continuity? YES -Go to step 13. NO -Repair an open or high resistance in the wire(s).
13. Check for continuity between body ground and power seat control unit connector B (40P) terminal No. 12. Is there continuity? YES -Repair a short to ground in the wire. NO -Go to step 14.
14. Reconnect power seat control unit connector B (40P).
15. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
16. Measure the voltage between front up-down motor/position sensor 5P connector terminals No. 5 (+) and No. 4(-). Is there about 5 V? YES -Faulty front up-down motor/position sensor; replace the seat frame assembly (see «FRONT SEAT FRAME REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#seats__front-seat-frame-replacement) ). NO -If there is no voltage, replace the power seat control unit (see «POWER SEAT CONTROL UNIT INPUT TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-seat-control-unit-input-testreplacement) ). If there is battery voltage, repair a short to power in the wire (sensor line).
17. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
18. Disconnect power seat control unit connector B (40P).
19. Disconnect the front up-down motor/position sensor 5P connector.
20. Check for continuity between power seat control unit connector B (40P) terminals No. 15 and No. 29 and front up-down motor/position sensor 5P connector terminals No. 3 and No. 4 respectively. Is there continuity? YES -Go to step 21. NO -Repair an open or high resistance in the wire(s).
21. Reconnect power seat control unit connector B (40P).
22. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
23. Measure the voltage between power seat control unit connector B (40P) terminals No. 15(+) and No. 29 Is there battery voltage when the front up-down switch is operated? YES -Faulty front up-down motor/position sensor; replace the seat frame assembly (see «FRONT SEAT FRAME REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#seats__front-seat-frame-replacement) ). NO -Replace the power seat control unit (see «POWER SEAT CONTROL UNIT INPUT TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-seat-control-unit-input-testreplacement) ).
24. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
25. Check the No. 19 (20 A) fuse in the driver's under-dash fuse/relay box. Is the fuse OK? YES -Go to step 26. NO -Replace the fuse. If the fuse blows again, repair a short to ground on the No. 19 (20 A) fuse circuit.
26. Measure the voltage between body ground and power seat control unit connector A (18P) terminal No. 8. Is there battery voltage? YES -Go to step 27. NO -Repair an open or high resistance in the wire between the driver's under-dash fuse/relay box and the power seat control unit.
27. Measure the voltage between body ground and power seat control unit connector A (18P) terminal No. 18 when operating the front up-down switch. Is there 0.2 V or more? YES -Repair an open or high resistance in the wire between the power seat control unit and body ground (G602). NO -Go to step 28.
28. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
29. Disconnect power seat control unit connector A (18P).
30. Disconnect the front up-down motor/position sensor 5P connector.
31. Check for continuity between power seat control unit connector A (18P) terminals No. 6 and No. 16 and front up-down motor/position sensor 5P connector terminals No. 2 and No. 1 respectively. Is there continuity? YES -Go to step 32. NO -Repair an open or high resistance in the wire(s).
32. Check for continuity between body ground and front up-down motor/position sensor 5P connector terminals No. 1 and No. 2 individually. Is there continuity? YES -Repair a short to ground in the wire(s). NO -Go to step 33.
33. Test the front up-down motor (see «DRIVER'S POWER SEAT MOTOR TEST»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__drivers-power-seat-motor-test) ). Is the motor OK? YES -Replace the power seat control unit (see «POWER SEAT CONTROL UNIT INPUT TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-seat-control-unit-input-testreplacement) ). NO -Faulty front up-down motor/position sensor; replace the seat frame assembly (see «FRONT SEAT FRAME REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#seats__front-seat-frame-replacement) ).

DTC B1827: Rear Height Pulse Error (No Change in Pulse for 1 Second)

Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

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1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back to ON (II), or press the engine start/stop button to select the OFF mode and then the ON mode.
3. Operate the power seat adjustment switch for several seconds in each direction. NOTE: DTC B1827 is stored when the rear up-down switch is operated more than 1 second after the seat moves to the most up or down position, even when the system is OK.
4. Check for DTCs with the HDS. Is DTC B1827 indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time. Check for loose or poor connections.
5. Check for DTCs with the HDS. Is DTC B1836 also indicated? YES -Go to the «DTC B1836 TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__dtc-b1836-power-seat-position-sensor) . NO -Go to step 6.
6. Check for DTCs with the HDS. Are DTCs B1825, B1826, 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), or press the engine start/stop button to select the OFF mode and then the ON mode.
8. Operate the rear up-down switch for 2 seconds, and check the rear up-down motor operation. Does the rear up-down motor run smoothly? YES -Go to step 9. NO -Go to step 24 .
9. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
10. Disconnect power seat control unit connector B (40P).
11. Disconnect the rear up-down motor/position sensor 5P connector.
12. Check for continuity between power seat control unit connector B (40P) terminals No. 13 and No. 29 and rear up-down motor/position sensor 5P connector terminals No. 5 and No. 4 respectively. Is there continuity? YES -Go to step 13. NO -Repair an open or high resistance in the wire(s).
13. Check for continuity between body ground and power seat control unit connector B (40P) terminal No. 13. Is there continuity? YES -Repair a short to ground in the wire. NO -Go to step 14.
14. Reconnect power seat control unit connector B (40P).
15. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
16. Measure the voltage between rear up-down motor/position sensor 5P connector terminals No. 5 (+) and No. 4(-). Is there about 5 V? YES -Faulty rear up-down motor/position sensor; replace the seat frame assembly (see «FRONT SEAT FRAME REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#seats__front-seat-frame-replacement) ). NO -If there is no voltage, replace the power seat control unit (see «POWER SEAT CONTROL UNIT INPUT TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-seat-control-unit-input-testreplacement) ). If there is battery voltage, repair a short to power in the wire (sensor line).
17. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
18. Disconnect power seat control unit connector B (40P).
19. Disconnect the rear up-down motor/position sensor 5P connector.
20. Check for continuity between power seat control unit connector B (40P) terminals No. 15 and No. 29 and rear up-down motor/position sensor 5P connector terminals No. 3 and No. 4 respectively. Is there continuity? YES -Go to step 21. NO -Repair an open or high resistance in the wire(s).
21. Reconnect power seat control unit connector B (40P).
22. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
23. Measure the voltage between power seat control unit connector B (40P) terminals No. 15 and No. 29. Is there battery voltage when the rear up-down switch is operated? YES -Faulty rear up-down motor/position sensor; replace the seat frame assembly (see «FRONT SEAT FRAME REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#seats__front-seat-frame-replacement) ). NO -Replace the power seat control unit (see «POWER SEAT CONTROL UNIT INPUT TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-seat-control-unit-input-testreplacement) ).
24. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
25. Check the No. 21 (20 A) fuse in the driver's under-dash fuse/relay box. Is the fuse OK? YES -Go to step 26. NO -Replace the fuse. If the fuse blows again, repair a short to ground on the No. 21 (20 A) fuse circuit.
26. Measure the voltage between body ground and power seat control unit connector A (18P) terminal No. 1. Is there battery voltage? YES -Go to step 27. NO -Repair an open or high resistance in the wire between the driver's under-dash fuse/relay box and the power seat control unit.
27. Measure the voltage between body ground and power seat control unit connector A (18P) terminal No. 4 when operating the rear up-down switch. Is there 0.2 V or more? YES -Repair an open or high resistance in the wire between the power seat control unit and body ground (G602). NO -Go to step 28.
28. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
29. Disconnect power seat control unit connector A (18P).
30. Disconnect the rear up-down motor/position sensor 5P connector.
31. Check for continuity between power seat control unit connector A (18P) terminals No. 2 and No. 10 and rear up-down motor/position sensor 5P connector terminals No. 2 and No. 1 respectively. Is there continuity? YES -Go to step 32. NO -Repair an open or high resistance in the wire(s).
32. Check for continuity between body ground and rear up-down motor/position sensor 5P connector terminals No. 1 and No. 2 individually. Is there continuity? YES -Repair a short to ground in the wire(s). NO -Go to step 33.
33. Test the rear up-down motor (see «DRIVER'S POWER SEAT MOTOR TEST»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__drivers-power-seat-motor-test) ). Is the motor OK? YES -Replace the power seat control unit (see «POWER SEAT CONTROL UNIT INPUT TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-seat-control-unit-input-testreplacement) ). NO -Faulty rear up-down motor/position sensor; replace the seat frame assembly (see «FRONT SEAT FRAME REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#seats__front-seat-frame-replacement) ).

DTC B1828: Driver's Seat Recline Motor Pulse Error

Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

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1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back to ON (II), or press the engine start/stop button to select the OFF mode and then the ON mode.
3. Operate the power seat adjustment switch for several seconds in each direction. NOTE: DTC B1828 is stored when the recline switch is operated more than 1 second after the seat moves to the most forward or backward position, even when the system is OK.
4. Check for DTCs with the HDS. Is DTC B1828 indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time. Check for loose or poor connections.
5. Check for DTCs with the HDS. Is DTC B1836 also indicated? YES -Go to the «DTC B1836 TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__dtc-b1836-power-seat-position-sensor) . NO -Go to step 6.
6. Check for DTCs with the HDS. Are DTCs B1825, B1826, and/or B1827 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), or press the engine start/stop button to select the OFF mode and then the ON mode.
8. Operate the recline switch for 2 seconds, and check the recline motor operation. Does the recline motor run smoothly? YES -Go to step 9. NO -Go to step 24 .
9. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
10. Disconnect power seat control unit connector B (40P).
11. Disconnect the recline motor/position sensor 5P connector.
12. Check for continuity between power seat control unit connector B (40P) terminals No. 10 and No. 29 and recline motor/position sensor 5P connector terminals No. 5 and No. 4 respectively. Is there continuity? YES -Go to step 13. NO -Repair an open or high resistance in the wire(s).
13. Check for continuity between body ground and power seat control unit connector B (40P) terminal No. 10. Is there continuity? YES -Repair a short to ground in the wire. NO -Go to step 14.
14. Reconnect power seat control unit connector B (40P).
15. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
16. Measure the voltage between recline motor/position sensor 5P connector terminals No. 5 (+) and No. 4 (-> Is there about 5 V? YES -Replace the recline motor/position sensor (see «FRONT SEAT RECLINE MOTOR REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#seats__front-seat-recline-motor-replacement) ). NO -If there is no voltage, replace the power seat control unit (see «POWER SEAT CONTROL UNIT INPUT TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-seat-control-unit-input-testreplacement) ). If there is battery voltage, repair a short to power in the wire (sensor line).
17. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
18. Disconnect power seat control unit connector B (40P).
19. Disconnect the recline motor/position sensor 5P connector.
20. Check for continuity between power seat control unit connector B (40P) terminals No. 15 and No. 29 and recline motor/position sensor 5P connector terminals No. 3 and No. 4 respectively. Is there continuity? YES -Go to step 21. NO -Repair an open or high resistance in the wire(s).
21. Reconnect power seat control unit connector B (40P).
22. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
23. Measure the voltage between power seat control unit connector B (40P) terminals No. 15 (+)and No. 29 Is there battery voltage when the recline switch is operated? YES -Replace the recline motor/position sensor (see «FRONT SEAT RECLINE MOTOR REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#seats__front-seat-recline-motor-replacement) ). NO -Replace the power seat control unit (see «POWER SEAT CONTROL UNIT INPUT TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-seat-control-unit-input-testreplacement) ).
24. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
25. Check the No. 21 (20 A) fuse in the driver's under-dash fuse/relay box. Is the fuse OK? YES -Go to step 26. NO -Replace the fuse. If the fuse blows again, repair the short to ground on the No. 21 (20 A) fuse circuit.
26. Measure the voltage between body ground and power seat control unit connector A (18P) terminal No. 1. Is there battery voltage? YES -Go to step 27. NO -Repair an open or high resistance in the wire between the driver's under-dash fuse/relay box and the power seat control unit.
27. Measure the voltage between body ground and power seat control unit connector A (18P) terminal No. 4 when operating the recline switch. Is there 0.2 V or more? YES -Repair an open or high resistance in the wire between the power seat control unit and body ground (G602). NO -Go to step 28.
28. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
29. Disconnect power seat control unit connector A (18P).
30. Disconnect the recline motor/position sensor 5P connector.
31. Check for continuity between power seat control unit connector A (18P) terminals No. 9 and No. 11 and recline motor/position sensor 5P connector terminals No. 1 and No. 2 respectively. Is there continuity? YES -Go to step 32. NO -Repair an open or high resistance in the wire(s).
32. Check for continuity between body ground and recline motor/position sensor 5P connector terminals No. 1 and No. 2 individually. Is there continuity? YES -Repair a short to ground in the wire(s). NO -Go to step 33.
33. Test the recline motor (see «DRIVER'S POWER SEAT MOTOR TEST»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__drivers-power-seat-motor-test) ). Is the motor OK? YES -Replace the power seat control unit (see «POWER SEAT CONTROL UNIT INPUT TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-seat-control-unit-input-testreplacement) ). NO -Replace the recline motor/position sensor (see «FRONT SEAT RECLINE MOTOR REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#seats__front-seat-recline-motor-replacement) ).

DTC B1829: A/T-P Signal and VSP Signal Mismatch

Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

1. Clear the DTCs with the HDS.
2. Start the engine.
3. Test drive at 6 mph (10 km/h) for 10 seconds.
4. Check for DTCs with the HDS. Is DTC B1829 indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time. Check for loose or poor connections.
5. Check the P shift position indicator and the MIL. Does the P indicator and MIL come on? YES -Troubleshoot the automatic transmission system. NO -Go to step 6.
6. Check for gauge control module DTCs with the HDS. Are any DTCs indicated? YES -Go to the indicated «DTCS TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms) . NO -Replace the power seat control unit (see «POWER SEAT CONTROL UNIT INPUT TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-seat-control-unit-input-testreplacement) ).

DTC B1830: Left Mirror Position Sensor Open

Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

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1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back to ON (II), or press the engine start/stop button to select the OFF mode and then the ON mode.
3. Operate the left power mirror in each direction with the power mirror switch.
4. Check for DTCs with the HDS. Is DTC B1830 indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time. Check for loose or poor connections.
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
6. Remove the driver's dashboard undercover (see «DRIVER'S DASHBOARD UNDERCOVER REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/gauges-instrument-panels/#dashboard) ).
7. Disconnect the power mirror control unit 24P connector.
8. Disconnect the left power mirror 16P connector.
9. Check for continuity between body ground and left power mirror 16P connector terminal No. 6. Is there continuity? YES -Repair a short to ground in the wire. NO -Go to step 10.
10. Connect power mirror control unit 24P connector terminal No. 7 to body ground with a jumper wire.
11. Check for continuity between body ground and left power mirror 16P connector terminal No. 6. Is there continuity? YES -Go to step 12. NO -Repair an open or high resistance in the wire.
12. Check for continuity between body ground and left power mirror 16P connector terminals No. 3 and No. 4. Is there continuity? YES -Repair a short to ground in the wire(s). NO -Go to step 13.
13. Connect power mirror control unit 24P connector terminals No. 4 and No. 5 to body ground with jumper wires.
14. Check for continuity between body ground and left power mirror 16P connector terminals No. 3 and No. 4. Is there continuity? YES -Go to step 15. NO -Repair an open or high resistance in the wire(s).
15. Check for continuity between body ground and power mirror control unit 24P connector terminal No. 6. Is there continuity? YES -Repair a short to ground in the wire. NO -Go to step 16.
16. Connect power mirror control unit 24P connector terminal No. 6 to body ground with a jumper wire.
17. Check for continuity between body ground and left power mirror 16P connector terminal No. 5. Is there continuity? YES -Go to step 18. NO -Repair an open or high resistance in the wire.
18. Reconnect the power mirror control unit 24P connector.
19. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
20. Measure the voltage between power mirror control unit 24P connector terminals No. 6 and No. 7. Is there about 5 V? YES -Faulty left power mirror position sensor; replace the power mirror actuator (see «POWER MIRROR ACTUATOR REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mirrors/#power-mirrors) ). NO -Substitute a known-good power mirror control unit, and recheck. If the DTC is gone, the original power mirror control unit is faulty; replace it (see «POWER MIRROR CONTROL UNIT INPUT TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-mirror-control-unit-input-testreplacement) ).

DTC B1832: Right Mirror Position Sensor Open

Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

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1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back to ON (II), or press the engine start/stop button to select the OFF mode and then the ON mode.
3. Operate the right power mirror in each direction with the power mirror switch.
4. Check for DTCs with the HDS. Is DTC B1832 indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time. Check for loose or poor connections.
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
6. Remove the driver's dashboard undercover (see «DRIVER'S DASHBOARD UNDERCOVER REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/gauges-instrument-panels/#dashboard) ).
7. Disconnect the power mirror control unit 24P connector.
8. Disconnect the right power mirror 16P connector.
9. Check for continuity between body ground and right power mirror 16P connector terminal No. 6. Is there continuity? YES -Repair a short to ground in the wire. NO -Go to step 10.
10. Connect power mirror control unit 24P connector terminal No. 7 to body ground with a jumper wire.
11. Check for continuity between body ground and right power mirror 16P connector terminal No. 6. Is there continuity? YES -Go to step 12. NO -Repair an open or high resistance in the wire.
12. Check for continuity between body ground and right power mirror 16P connector terminals No. 3 and No. 4. Is there continuity? YES -Repair a short to ground in the wire(s). NO -Go to step 13.
13. Connect power mirror control unit 24P connector terminals No. 19 and No. 20 to body ground with jumper wires.
14. Check for continuity between body ground and right power mirror 16P connector terminals No. 3 and No. 4. Is there continuity? YES -Go to step 15. NO -Repair an open or high resistance in the wire(s).
15. Check for continuity between power mirror control unit 24P connector terminal No. 6 and body ground. Is there continuity? YES -Repair a short to ground in the wire. NO -Go to step 16.
16. Connect power mirror control unit 24P connector terminal No. 6 to body ground with a jumper wire.
17. Check for continuity between body ground and right power mirror 16P connector terminal No. 5. Is there continuity? YES -Go to step 18. NO -Repair an open or high resistance in the wire.
18. Reconnect the power mirror control unit 24P connector.
19. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
20. Measure the voltage between power mirror control unit 24P connector terminals No. 6 and No. 7. Is there about 5 V? YES -Faulty right power mirror position sensor; replace the power mirror actuator (see «POWER MIRROR ACTUATOR REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mirrors/#power-mirrors) ). NO -Substitute a known-good power mirror control unit, and recheck. If the DTC is gone, the original power mirror control unit is faulty; replace it (see «POWER MIRROR CONTROL UNIT INPUT TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-mirror-control-unit-input-testreplacement) ).

DTC B1835: Steering Column Manual Switch Malfunction

Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

Scheme 194

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1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back to ON (II), or press the engine start/stop button to select the OFF mode and then the ON mode.
3. Operate the power tilt/telescopic in each direction with the power tilt/telescopic steering switch.
4. Check for DTCs with the HDS. Is DTC B1835 indicated? YES -Go to step 5. NO -Intermittent failure, the power tilt/telescopic steering system is OK at this time. Check for loose or poor connections.
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
6. Do the power tilt/telescopic steering switch test (see «POWER TILT/TELESCOPIC STEERING SWITCH TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms) ). Is the switch OK? YES -Go to step 7. NO -Replace the power tilt/telescopic steering switch (see «POWER TILT/TELESCOPIC STEERING SWITCH TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms) ).
7. Disconnect power tilt/telescopic steering control unit connector A (16P).
8. Disconnect the power tilt/telescopic steering switch 13P connector.
9. Check for continuity between body ground and power tilt/telescopic steering switch 13P connector terminals No. 1, No. 3, No. 6, No. 7, and No. 10 individually. Is there continuity? YES -Repair a short to ground in the wire(s). NO -Go to step 10.
10. Check for continuity between power tilt/telescopic steering control unit connector A (16P) terminals and power tilt/telescopic steering switch 13P connector terminals as shown in illustration: POWER POWER TILT/TELESCOPIC TILT/TELESCOPIC STEERING STEERING CONTROL UNIT SWITCH 13P CONNECTOR A (16P) CONNECTOR No. 1 No. 7 No. 3 No. 10 No. 6 No. 15 No. 7 No. 6 No. 10 No. 14 Is there continuity? YES -Replace the power tilt/telescopic steering control unit (see «POWER TILT/TELESCOPIC STEERING CONTROL UNIT INPUT TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-tilttelescopic-steering-control-unit-input) ). NO -Repair an open or high resistance in the wire(s).

DTC B1836: Power Seat Position Sensor Circuit Short

Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

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1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back to ON (II), or press the engine start/stop button to select the OFF mode and then the ON mode.
3. Operate the power seat adjustment switch in all directions for more than 1 second each.
4. Check for DTCs with the HDS. Is DTC B1836 indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time. Check for loose or poor connections.
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
6. Disconnect power seat control unit connector B (40P).
7. Disconnect the 5P connector from each motor.
8. Check for continuity between body ground and power seat control unit connector B (40P) terminal No. 15. Is there continuity? YES -Repair a short to ground in the wire. NO -Go to step 9.
9. Check for continuity between slide motor/position sensor terminal No. 2 and body ground (motor body). Is there continuity? YES -Replace the slide motor/position sensor (see «FRONT SEAT SLIDE MOTOR REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#seats__front-seat-slide-motor-replacement) ). NO -Go to step 10.
10. Check for continuity between front up-down motor/position sensor, rear up-down motor/position sensor, and recline motor/position sensor terminal No. 3 and body ground (motor body). Is there continuity? YES -If the front or rear up-down motor/position sensor is faulty, replace the seat frame assembly (see «FRONT SEAT FRAME REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#seats__front-seat-frame-replacement) ). If the recline motor/position sensor is faulty, replace the recline motor/position sensor (see «FRONT SEAT RECLINE MOTOR REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#seats__front-seat-recline-motor-replacement) ). NO -Replace the power seat control unit (see «POWER SEAT CONTROL UNIT INPUT TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-seat-control-unit-input-testreplacement) ).

DTC B1837: Memory Position Calling Timeout

Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see 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), or press the engine start/stop button to select the OFF mode and then the ON mode.
3. Move both power mirrors to the full up and full left positions with the power mirror switch.
4. Move the power tilt to the full up position with power tilt/telescopic steering switch.
5. Move the power telescopic to the full pull position with power tilt/telescopic steering switch.
6. Move the power seat to the full front up and full rear up positions, then slide the seat all the way back and completely recline the seat-back backward with the power seat adjustment switch.
7. Set the seating position into memory by pressing either the Driver 1 or the Driver 2 position memory switch.
8. Using the power seat switches, move the seat away from the position just memorized.
9. Recall the memory position with the driving position memory switch.
10. Wait for 2 minutes.
11. Check for DTCs with the HDS. Are any DTCs indicated? YES -Go to step 12. NO -Intermittent failure, the system is OK at this time. Check for loose or poor connections.
12. Check for DTCs with the HDS. Are any DTCs other than B1837 indicated? YES -Go to the indicated «DTCS TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms) . NO -Go to step 13.
13. Clear the DTCs with the HDS.
14. Wait for 6 seconds.
15. Move each power seat motor one at a time, and check the operation time. Does any motor fail to run smoothly? YES -Go to the «POWER SEAT MOTOR TEST»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__drivers-power-seat-motor-test) . If the motor is OK, check the engagement of the motor gear. NO -Go to the «POWER SEAT CONTROL UNIT INPUT TEST»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-seat-control-unit-input-testreplacement) .

DTC B1840: Steering Column Tilt Pulse Failure

Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

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1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back to ON (II), or press the engine start/stop button to select the OFF mode and then the ON mode.
3. Operate the power tilt in each direction with the power tilt/telescopic steering switch.
4. Check for DTCs with the HDS. Is DTC B1840 indicated? YES -Go to step 5. NO -Intermittent failure, the tilt position sensor is OK at this time. Check for loose or poor connections.
5. Clear the DTCs with the HDS. Operate the tilt switch in each direction for at least 1 second, then check for DTCs with the HDS. Is DTC B1841 also indicated? YES -Go to step 17 . NO -Go to step 6.
6. Clear the DTCs with the HDS.
7. Turn the ignition switch to LOCK (0), and then back to ON (II), or press the engine start/stop button to select the OFF mode and then the ON mode.
8. Operate the tilt switch for at least 2 seconds, and check the tilt motor operation. Does the tilt motor run smoothly? YES -Go to step 9. NO -Go to step 24 .
9. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
10. Disconnect power tilt/telescopic steering control unit connector A (16P).
11. Disconnect the power tilt motor/position sensor 8P connector.
12. Check for continuity between power tilt/telescopic steering control unit connector A (16P) terminals No. 4, No. 12, and No. 16 and power tilt motor/position sensor 8P connector terminals No. 6, No. 7, and No. 8 respectively. Is there continuity? YES -Go to step 13. NO -Repair an open or high resistance in the wire(s).
13. Check for continuity between body ground and power tilt/telescopic steering control unit connector A (16P) terminal No. 4 and No. 12 individually. Is there continuity? YES -Repair a short to ground in the wire(s). NO -Go to step 14.
14. Reconnect power tilt/telescopic steering control unit connector A (16P).
15. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
16. Measure the voltage between power tilt motor/position sensor 8P connector terminals No. 6 and No. 8, and between terminals No. 7 and No. 8. Is there about 5 V? YES -Faulty power tilt position sensor; replace the steering column assembly (see «STEERING COLUMN REMOVAL AND INSTALLATION»(/acura/zdx/i-2009-2013/remont/manual-power-steering/#power-steering-system__steering-column-removal-and-installation) ). NO -If there is no voltage, replace the power tilt/telescopic steering control unit (see «POWER TILT/TELESCOPIC STEERING SWITCH TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms) ). If there is battery voltage, repair a short to power in the wires.
17. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
18. Disconnect power tilt/telescopic steering control unit connector A (16P).
19. Disconnect the power tilt motor/position sensor 8P connector.
20. Check for continuity between power tilt/telescopic steering control unit connector A (16P) terminals No. 2 and No. 16 and power tilt motor/position sensor 8P connector terminals No. 5 and No. 8 respectively. Is there continuity? YES -Go to step 21. NO -Repair an open or high resistance in the wire(s).
21. Reconnect power tilt/telescopic steering control unit connector A (16P).
22. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
23. Measure the voltage between power tilt/telescopic steering control unit connector A (16P) terminals No. 2 and No. 16. Is there battery voltage when the tilt switch is operated? YES -Replace the steering column assembly (see «STEERING COLUMN REMOVAL AND INSTALLATION»(/acura/zdx/i-2009-2013/remont/manual-power-steering/#power-steering-system__steering-column-removal-and-installation) ). NO -Replace the power tilt/telescopic steering control unit (see «POWER TILT/TELESCOPIC STEERING CONTROL UNIT INPUT TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-tilttelescopic-steering-control-unit-input) ).
24. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
25. Check the No. 7 (20 A) fuse in the auxiliary under-hood fuse/relay box. Is the fuse OK? YES -Go to step 26. NO -Replace the fuse. If the fuse blows again, repair a short to ground on the No. 7 (20 A) fuse circuit.
26. Measure the voltage between body ground and power tilt/telescopic steering control unit connector B (8P) terminal No. 3. Is there battery voltage? YES -Go to step 27. NO -Repair an open or high resistance in the wire between the driver's under-dash fuse/relay box and the power tilt/telescopic steering control unit.
27. Measure the voltage between body ground and power tilt/telescopic steering control unit connector B (8P) terminal No. 1 when operating the tilt up-down switch. Is there 0.2 V or more? YES -Repair an open or high resistance in the wire between the power tilt/telescopic steering control unit and body ground (G403). NO -Go to step 28.
28. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
29. Disconnect power tilt/telescopic steering control unit connector B (8P).
30. Disconnect the power tilt motor/position sensor 8P connector.
31. 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 32. NO -Repair an open or high resistance in the wire(s).
32. Check for continuity between body ground and power tilt motor/position sensor 8P connector terminals No. 2 and No. 3 individually. Is there continuity? YES -Repair a short to ground in the wire(s). NO -Go to step 33.
33. Do the tilt motor test (see «POWER TILT/TELESCOPIC STEERING MOTOR TEST»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms) ). Is the motor OK? YES -Replace the power tilt/telescopic steering control unit (see «POWER TILT/TELESCOPIC STEERING CONTROL UNIT INPUT TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-tilttelescopic-steering-control-unit-input) ). NO -Replace the steering column assembly (see «STEERING COLUMN REMOVAL AND INSTALLATION»(/acura/zdx/i-2009-2013/remont/manual-power-steering/#power-steering-system__steering-column-removal-and-installation) ).

DTC B1841: Steering Column Telesco Pulse Failure

Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

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1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back to ON (II), or press the engine start/stop button to select the OFF mode and then the ON mode.
3. Operate the power telescopic in each direction with the tilt/telescopic steering switch.
4. Check for DTCs with the HDS. Is DTC B1841 indicated? YES -Go to step 5. NO -Intermittent failure, the telescopic position sensor is OK at this time. Check for loose or poor connections.
5. Clear the DTCs with the HDS. Operate the tilt switch in each direction for at least 1 second, then check for DTCs with the HDS. Is DTC B1840 also indicated? YES -Go to step 17 . NO -Go to step 6.
6. Clear the DTCs with the HDS.
7. Turn the ignition switch to LOCK (0), and then back to ON (II), or press the engine start/stop button to select the OFF mode and then the ON mode.
8. Operate the tilt switch for at least 2 seconds, and check the telescopic motor operation. Does the telescopic motor run smoothly? YES -Go to step 9. NO -Go to step 24 .
9. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
10. Disconnect power tilt/telescopic steering control unit connector A (16P).
11. Disconnect the power telescopic motor/position sensor 6P connector.
12. Check for continuity between power tilt/telescopic steering control unit connector A (16P) terminals No. 5, No. 13, and No. 16 and power telescopic motor/position sensor 6P connector terminals No. 4, No. 5, and No. 6 respectively. Is there continuity? YES -Go to step 13. NO -Repair an open or high resistance in the wire(s).
13. Check for continuity between body ground and power tilt/telescopic steering control unit connector A (16P) terminal No. 5 and No. 13 individually. Is there continuity? YES -Repair a short to ground in the wire(s). NO -Go to step 14.
14. Reconnect power tilt/telescopic steering control unit connector A (16P).
15. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
16. Measure the voltage between power telescopic motor/position sensor 6P connector terminals No. 4 and No. 6 and between terminals No. 5 and No. 6. Is there about 5 V? YES -Faulty power telescopic position sensor; replace the steering column assembly (see «STEERING COLUMN REMOVAL AND INSTALLATION»(/acura/zdx/i-2009-2013/remont/manual-power-steering/#power-steering-system__steering-column-removal-and-installation) ). NO -If there is no voltage, replace the power tilt/telescopic steering control unit. If there is battery voltage, repair a short to power in the wires.
17. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
18. Disconnect power tilt/telescopic steering control unit connector A (16P).
19. Disconnect the power telescopic motor/position sensor 6P connector.
20. Check for continuity between power tilt/telescopic steering control unit connector A (16P) terminals No. 2 and No. 16 and power telescopic motor/position sensor 6P connector terminals No. 3 and No. 6 respectively. Is there continuity? YES -Go to step 21. NO -Repair an open or high resistance in the wire(s).
21. Reconnect power tilt/telescopic steering control unit connector A (16P).
22. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
23. Measure the voltage between power tilt/telescopic steering control unit connector A (16P) terminals No. 2 and No. 16. Is there battery voltage when the telescopic switch is operated? YES -Faulty power telescopic position sensor; replace the steering column assembly (see «STEERING COLUMN REMOVAL AND INSTALLATION»(/acura/zdx/i-2009-2013/remont/manual-power-steering/#power-steering-system__steering-column-removal-and-installation) ). NO -Replace the power tilt/telescopic steering control unit (see «POWER TILT/TELESCOPIC STEERING CONTROL UNIT INPUT TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-tilttelescopic-steering-control-unit-input) ).
24. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
25. Check the No. 8 (20 A) fuse in the auxiliary under-hood fuse/relay box. Is the fuse OK? YES -Go to step 26. NO -Replace the fuse. If the fuse blows again, repair a short to ground on the No. 8 (20 A) fuse circuit.
26. Measure the voltage between body ground and power tilt/telescopic steering control unit connector B (8P) terminal No. 5. Is there battery voltage? YES -Go to step 27. NO -Repair an open or high resistance in the wire between the driver's under-dash fuse/relay box and the power tilt/telescopic steering control unit.
27. Measure the voltage between body ground and power tilt/telescopic steering control unit connector B (8P) terminal No. 1 when operating the telescopic pull-push switch. Is there 0.2 V or more? YES -Repair an open or high resistance in the wire between the power tilt/telescopic steering control unit and body ground (G403). NO -Go to step 28.
28. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
29. Disconnect power tilt/telescopic steering control unit connector B (8P).
30. Disconnect the power telescopic motor/position sensor 6P connector.
31. Check for continuity between power tilt/telescopic steering control unit connector B (8P) terminals No. 4 and No. 6 and power telescopic motor/position sensor 6P connector terminals No. 1 and No. 2 respectively. Is there continuity? YES -Go to step 32. NO -Repair an open or high resistance in the wire(s).
32. Check for continuity between body ground and power telescopic motor/position sensor 6P connector terminals No. 1 and No. 2 individually. Is there continuity? YES -Repair a short to ground in the wire(s). NO -Go to step 33.
33. Do the telescopic motor test (see «POWER TILT/TELESCOPIC STEERING MOTOR TEST»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms) ). Is the motor OK? YES -Replace the power tilt/telescopic steering control unit (see «POWER TILT/TELESCOPIC STEERING CONTROL UNIT INPUT TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-tilttelescopic-steering-control-unit-input) ). NO -Faulty power telescopic position sensor; replace the steering column assembly (see «STEERING COLUMN REMOVAL AND INSTALLATION»(/acura/zdx/i-2009-2013/remont/manual-power-steering/#power-steering-system__steering-column-removal-and-installation) ).

DTC B1842: Power Tilt/Telescopic Position Sensor Power Supply Circuit (SVCC Line) Short

Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

Scheme 217

Scheme 218

Scheme 219

1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back to ON (II), or press the engine start/stop button to select the OFF mode and then the ON mode.
3. Operate the power tilt/telescopic in each direction with the tilt/telescopic steering switch.
4. Check for DTCs with the HDS. Is DTC B1842 indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time. Check for loose or poor connections.
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
6. Disconnect these items: Power tilt/telescopic steering control unit connector A(16P) Power telescopic motor/position sensor 6P connector Power tilt motor/position sensor 8P connector
7. Check for continuity between power tilt/telescopic steering control unit connector A (16P) terminal No. 2 and body ground. Is there continuity? YES -Repair a short to ground in the wire. NO -Go to step 8.
8. Check for continuity between power telescopic motor/position sensor 6P connector terminal No. 3 and body ground (motor body). Is there continuity? YES -Faulty power telescopic motor/position sensor; replace the steering column assembly (see «STEERING COLUMN REMOVAL AND INSTALLATION»(/acura/zdx/i-2009-2013/remont/manual-power-steering/#power-steering-system__steering-column-removal-and-installation) ). NO -Go to step 9.
9. Check for continuity between power tilt motor/position sensor 8P connector terminal No. 5 and body ground (motor body). Is there continuity? YES -Faulty power tilt motor/position sensor; replace the steering column assembly (see «STEERING COLUMN REMOVAL AND INSTALLATION»(/acura/zdx/i-2009-2013/remont/manual-power-steering/#power-steering-system__steering-column-removal-and-installation) ). NO -Replace the power tilt/telescopic steering control unit (see «POWER TILT/TELESCOPIC STEERING CONTROL UNIT INPUT TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-tilttelescopic-steering-control-unit-input) ).

DTC B1843: UART Communication Error

Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

Scheme 220

Scheme 221

Scheme 222

Scheme 223

1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back to ON (II), or press the engine start/stop button to select the OFF mode and then the ON mode.
3. Operate the power seat with the driving position memory switch.
4. Check for DTCs with the HDS. Is DTC B1843 Indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time. Check for loose or poor connections.
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
6. Disconnect these items: Power seat control unit connector A (18P) Power seat control unit connector B (40P) Power mirror control unit 24P connector
7. Check for continuity between power seat control unit connector B (40P) terminal No. 38 and power mirror control unit 24P connector terminal No. 13. Is there continuity? YES -Go to step 8. NO -Repair an open in the UART wire between the power mirror control unit and the power seat control unit.
8. Disconnect the power tilt/telescopic steering control unit connectors.
9. Check for continuity between body ground and power seat control unit connector B (40P) terminal No. 38. Is there continuity? YES -Repair a short to ground in the UART wire. NO -Go to step 10.
10. Reconnect the power mirror control unit 24P connector.
11. Measure the voltage between body ground and power mirror control unit 24P connector terminal No. 24. Is there battery voltage? YES -Go to step 12. NO -Check No. 15 (10 A) fuse in the under-hood fuse/relay box. If the fuse is OK, repair an open or high resistance in the wire.
12. Check for continuity between body ground and power mirror control unit 24P connector terminal No. 22. Is there continuity? YES -Replace the power mirror control unit (see «POWER MIRROR CONTROL UNIT INPUT TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-mirror-control-unit-input-testreplacement) ). NO -Repair an open or high resistance in the wire between the power mirror control unit and body ground (G402). If the wire is OK, repair the body ground (G402).

DTC B1844: Power Seat Slide Switch Circuit Malfunction

Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

Scheme 224

Scheme 225

1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back to ON (II), or press the engine start/stop button to select the OFF mode and then the ON mode.
3. Operate the slide switch in each direction for more than 1 second.
4. Check for DTCs with the HDS. Is DTC B1844 indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time. Check for loose or poor connections.
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
6. Disconnect power seat control unit connector B (40P).
7. Disconnect the power seat adjustment switch 12P connector.
8. Check for continuity between body ground and power seat control unit connector B (40P) terminals No. 1, No. 7, and No. 24 individually. Is there continuity? YES -Repair a short to ground in the wire(s). NO -Go to step 9.
9. Check for continuity between these power seat control unit connector B (40P) terminals: No. 1 and No. 7 No. 1 and No. 24 No. 7 and No. 24 Is there continuity? YES -Repair a short in the wire(s). NO -Go to step 10.
10. Test the power seat adjustment switch (see «POWER SEAT ADJUSTMENT SWITCH TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-seat-adjustment-switch-testreplacement) ). Is the switch OK? YES -Replace the power seat control unit (see «POWER SEAT CONTROL UNIT INPUT TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-seat-control-unit-input-testreplacement) ). NO -Replace the power seat adjustment switch (see «POWER SEAT ADJUSTMENT SWITCH TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-seat-adjustment-switch-testreplacement) ).

DTC B1845: Power Seat Recline Switch Circuit Malfunction

Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

Scheme 226

Scheme 227

1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back to ON (II), or press the engine start/stop button to select the OFF mode and then the ON mode.
3. Operate the recline switch in each direction for more than 1 second.
4. Check for DTCs with the HDS. Is DTC B1845 indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time. Check for loose or poor connections.
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
6. Disconnect power seat control unit connector B (40P).
7. Disconnect the power seat adjustment switch 12P connector.
8. Check for continuity between body ground and power seat control unit connector B (40P) terminals No. 1, No. 6, and No. 23 individually. Is there continuity? YES -Repair a short to ground in the wire(s). NO -Go to step 9.
9. Check for continuity between these power seat control unit connector B (40P) terminals: No. 1 and No. 6 No. 1 and No. 23 No. 6 and No. 23 Is there continuity? YES -Repair a short in the wire(s). NO -Go to step 10.
10. Test the power seat adjustment switch (see «POWER SEAT ADJUSTMENT SWITCH TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-seat-adjustment-switch-testreplacement) ). Is the switch OK? YES -Replace the power seat control unit (see «POWER SEAT CONTROL UNIT INPUT TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-seat-control-unit-input-testreplacement) ). NO -Replace the power seat adjustment switch (see «POWER SEAT ADJUSTMENT SWITCH TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-seat-adjustment-switch-testreplacement) ).

DTC B1846: Power Seat Front Up-Down Switch Circuit Malfunction

Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

Scheme 228

Scheme 229

1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back to ON (II), or press the engine start/stop button to select the OFF mode and then the ON mode.
3. Operate the front up-down switch in each direction for more than 1 second.
4. Check for DTCs with the HDS. Is DTC B1846 indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time. Check for loose or poor connections.
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
6. Disconnect power seat control unit connector B (40P).
7. Disconnect the power seat adjustment switch 12P connector.
8. Check for continuity between body ground and power seat control unit connector B (40P) terminals No. 1, No. 4, and No. 5 individually. Is there continuity? YES -Repair a short to ground in the wire(s). NO -Go to step 9.
9. Check for continuity between these power seat control unit connector B (40P) terminals: No. 1 and No. 4 No. 1 and No. 5 No. 4 and No. 5 Is there continuity? YES -Repair a short in the wires. NO -Go to step 10.
10. Test the power seat adjustment switch (see «POWER SEAT ADJUSTMENT SWITCH TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-seat-adjustment-switch-testreplacement) ). Is the switch OK? YES -Replace the power seat control unit (see «POWER SEAT CONTROL UNIT INPUT TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-seat-control-unit-input-testreplacement) ). NO -Replace the power seat adjustment switch (see «POWER SEAT ADJUSTMENT SWITCH TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-seat-adjustment-switch-testreplacement) ).

DTC B1847: Power Seat Rear Up-Down Switch Circuit Malfunction

Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

Scheme 230

Scheme 231

1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back to ON (II), or press the engine start/stop button to select the OFF mode and then the ON mode.
3. Operate the rear up-down switch in each direction for more than 1 second.
4. Check for DTCs with the HDS. Is DTC B1847 indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time. Check for loose or poor connections.
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
6. Disconnect power seat control unit connector B (40P).
7. Disconnect the power seat adjustment switch 12P connector.
8. Check for continuity between body ground and power seat control unit connector B (40P) terminals No. 1, No. 3, and No. 22 individually. Is there continuity? YES -Repair a short to ground in the wire(s). NO -Go to step 9.
9. Check for continuity between these power seat control unit connector B (40P) terminals: No. 1 and No. 3 No. 1 and No. 22 No. 3 and No. 22 Is there continuity? YES -Repair a short in the wires. NO -Go to step 10.
10. Test the power seat adjustment switch (see «POWER SEAT ADJUSTMENT SWITCH TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-seat-adjustment-switch-testreplacement) ). Is the switch OK? YES -Replace the power seat control unit (see «POWER SEAT CONTROL UNIT INPUT TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-seat-control-unit-input-testreplacement) ). NO -Replace the power seat adjustment switch (see «POWER SEAT ADJUSTMENT SWITCH TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-seat-adjustment-switch-testreplacement) ).

DTC U0155: Power Seat Control Unit Lost Communication With Gauge Control Module (VSP/NE Frame)

Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

Scheme 232

Scheme 233

Scheme 234

1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back to ON (II), or press the engine start/stop button to select the OFF mode and then the ON mode.
3. Wait for at least 6 seconds.
4. Check for DTCs with the HDS. Is DTC U0155 indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time. Check for loose or poor connections between the power seat control unit and the gauge control module.
5. From the BODY ELECTRICAL SYSTEM SELECT menu, select B-CAN CONTROL UNITS INFORMATION, and then select CHECK CONNECTED CONTROL UNITS. Is the gauge control module detected? YES -Go to step 10 . NO -Go to step 6.
6. Measure the voltage between body ground and gauge control module connector A (32P) terminals No. 15 and No. 16 individually. Is there battery voltage? YES -Go to step 9 . NO -Go to step 7.
7. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
8. Check the No. 15 (10 A) fuse in the under-hood fuse/relay box and the No. 12 (7.5 A) fuse in the driver's under-dash fuse/relay box. Are the fuses OK? YES -Repair an open or high resistance in the No. 15 (10 A) and/or No. 12 (7.5 A) fuse circuit. NO -Replace the fuse(s). If the fuse blows again, repair a short to ground on the No. 15 (10 A) and/or No. 12 (7.5 A) fuse circuit.
9. Measure the voltage between body gauge control module connector A (32P) terminals No. 1 and No. 17 individually. Is there less than 0.2 V? YES -Go to step 10. NO -Repair an open or high resistance in the ground wire(s) or poor ground (G401) and/or (G402).
10. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
11. Disconnect power seat control unit connector B (40P).
12. Disconnect gauge control module connector A (32P).
13. Check for continuity between gauge control module connector A (32P) terminals No. 29 and No. 30 and power seat control unit connector B (40P) terminals No. 39 and No. 40 respectively. Is there continuity? YES -Replace the gauge control module (see «GAUGE CONTROL MODULE REPLACEMENT»(/acura/zdx/i-2009-2013/remont/gauges-instrument-panels/#gauges__gauge-control-module-replacement) ). NO -Repair an open or poor connection in the B-CAN wire(s) between the power seat control unit and the gauge control module.

DTC U0199: Power Seat Control Unit Lost Communication With Door Multiplex Control Unit (DRLockSW Frame)

Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

Scheme 235

Scheme 236

Scheme 237

1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back to ON (II), or press the engine start/stop button to select the OFF mode and then the ON mode.
3. Wait for at least 6 seconds.
4. Check for DTCs with the HDS. Is DTC U0199 indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time. Check for loose or poor connections between the power seat control unit and the door multiplex control unit.
5. From the BODY ELECTRICAL SYSTEM SELECT menu, select B-CAN CONTROL UNITS INFORMATION, and then select CHECK CONNECTED CONTROL UNITS. Is the power window unit detected? YES -Go to step 10 . NO -Go to step 6.
6. Measure the voltage between body ground and power window master switch 37P connector terminal No. 13. Is there battery voltage? YES -Go to step 9 . NO -Go to step 7.
7. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
8. Check the No. 15 (10 A) fuse in the under-hood fuse/relay box. Is the fuse OK? YES -Repair an open or high resistance in the No. 15 (10 A) fuse circuit. NO -Replace the fuse. If the fuse blows again, repair a short to ground on the No. 15 (10 A) fuse circuit.
9. Measure the voltage between body ground and power window master switch 37P connector terminals No. 32 and No. 37 individually. Is there less than 0.2 V? YES -Go to step 10. NO -Repair an open or high resistance in the ground wire(s) or poor ground (G401) and/or (G402).
10. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
11. Disconnect power seat control unit connector B (40P).
12. Disconnect the power window master switch 37P connector.
13. Check for continuity between power window master switch 37P connector terminals No. 33 and No. 35 and power seat control unit connector B (40P) terminals No. 39 and No. 40 respectively. Is there continuity? YES -Replace the power window master switch (see «REAR POWER WINDOW SWITCH TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/windows/#power-windows) ). NO -Repair an open or poor connection in the B-CAN wire(s) between the power seat control unit and the door multiplex control unit.

DTC U1282: Power Seat Control Unit Lost Communication With Driver's MICU

Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see 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), or press the engine start/stop button to select the OFF mode and then the ON mode.
3. Wait for at least 6 seconds.
4. Check for DTCs with the HDS. Is DTC U1282 indicated? YES -Replace the power seat control unit (see «POWER SEAT CONTROL UNIT INPUT TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-seat-control-unit-input-testreplacement) ). NO -Intermittent failure, the system is OK at this time. Check for loose or poor connections between the power seat control unit and the driver's MICU.

System Input Test and Function Test

1. Connect the HDS to the data link connector (DLC).
2. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
3. From the BODY ELECTRICAL SYSTEM SELECTION menu, select POWER SEAT/POWER MIRROR, then DTCs. If DTCs are found, troubleshoot the DTCs using B-CAN System Diagnosis Test Mode A (see «TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A»(/acura/zdx/i-2009-2013/remont/communication-devices/#multiplex-integrated-control-system__troubleshooting-b-can-system-diagnosis-test) ). If no DTCs are found, go to step 4.
4. Exit the DTC mode, and select the DATA LIST from the POWER SEAT/POWER MIRROR TEST MODE MENU.
5. Test each input and monitor each output under the condition shown below: If the data list indication is correct, continue to the next switch. If all switches are OK, go to step 6. If the data list indication is not correct, do the appropriate test at the control unit and terminal indicated in the table. Voltage drop tests should be done with the ignition switch in ON (II) or the vehicle ignition in the ON mode, and all connectors connected and the meter negative test lead attached to a good body ground, unless specified otherwise. Continuity tests should be done with the ignition switch in LOCK (0) or the vehicle ignition in the OFF mode, and indicated terminals disconnected. Data List Input/Command Condition: Data List Indication Control Unit/Terminal Number/Test (If applicable) Possible cause if desired result is not obtained Slide Switch Forward Slide switch forward: ON Switch released: OFF Power seat control unit/B1, B7 Slide switch forward: 0 V Switch released: 5 V Faulty control unit Faulty switch (see «POWER SEAT ADJUSTMENT SWITCH TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-seat-adjustment-switch-testreplacement) ) An open or high resistance in the wire A short in the wire Slide Switch Backward Slide switch backward: ON Switch released: OFF Power seat control unit/B1, B24 Slide switch backward: 0 V Switch released: 5 V Faulty control unit Faulty switch (see «POWER SEAT ADJUSTMENT SWITCH TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-seat-adjustment-switch-testreplacement) ) An open or high resistance in the wire A short in the wire Recline Switch Forward Recline switch forward: ON Switch released: OFF Power seat control unit/B1, B6 Recline switch forward: 0 V Switch released: 5 V Faulty control unit Faulty switch (see «POWER SEAT ADJUSTMENT SWITCH TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-seat-adjustment-switch-testreplacement) ) An open or high resistance in the wire A short in the wire Recline Switch Backward Recline switch backward: ON Switch released: OFF Power seat control unit/B1, B23 Recline switch backward: 0 V Switch released: 5 V Faulty control unit Faulty switch (see «POWER SEAT ADJUSTMENT SWITCH TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-seat-adjustment-switch-testreplacement) ) An open or high resistance in the wire A short in the wire Front Up-Down Switch Up Front up-down switch up: ON Switch released: OFF Power seat control unit/B1, B5 Front up-down switch up: 0 V Switch released: 5 V Faulty control unit Faulty switch (see «POWER SEAT ADJUSTMENT SWITCH TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-seat-adjustment-switch-testreplacement) ) An open or high resistance in the wire A short in the wire Front Up-Down Switch Down Front up-down switch down: ON Switch released: OFF Power seat control unit/B1, B4 Front up-down switch down: 0 V Switch released: 5 V Faulty control unit Faulty switch (see «POWER SEAT ADJUSTMENT SWITCH TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-seat-adjustment-switch-testreplacement) ) An open or high resistance in the wire A short in the wire Rear Up-Down Switch Up Rear up-down switch up: ON Switch released: OFF Power seat control unit/B1, B22 Rear up-down switch up: 0 V Switch released: 5 V Faulty control unit Faulty switch (see «POWER SEAT ADJUSTMENT SWITCH TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-seat-adjustment-switch-testreplacement) ) An open or high resistance in the wire A short in the wire Rear Up-Down Switch Down Rear up-down switch down: ON Switch released: OFF Power seat control unit/B1, B3 Rear up-down switch up: 0 V Switch released: 5 V Faulty control unit Faulty switch (see «POWER SEAT ADJUSTMENT SWITCH TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-seat-adjustment-switch-testreplacement) ) An open or high resistance in the wire A short in the wire Ignition Switch for Power Seat Control Ignition switch ON (II) or vehicle ignition ON mode: ON Ignition switch OFF or vehicle ignition OFF mode: OFF Power seat control unit/B34 Ignition switch ON (II) or vehicle Ignition ON mode: 12V Ignition switch OFF or vehicle ignition OFF mode: 0V Blown No. 12 (7.5 A) fuse in the driver's under-dash fuse/relay box Faulty control unit An open or high resistance in the wire ATP Switch Transmission range switch P position: ON Any other position than P: OFF Power seat control unit/B26 Transmission range switch P: 0 V Any other position than P: 12 V Faulty control unit Faulty transmission range switch An open or high resistance in the wire Slide Sensor Seat moving forward or backward: ON Seat not moving: OFF Power seat control unit/B11 Pulses as seat moves: 2.5 V average Faulty control unit Faulty sensor An open or high resistance in the wire Front Up-Down Sensor Seat front moving up/down: ON Seat not moving: OFF Power seat control unit/B12 Pulses as seat moves: 2.5 V average Faulty control unit Faulty sensor An open or high resistance in the wire Recline Sensor Seat-back moving forward or backward: ON Seat not moving: OFF Power seat control unit/B10 Pulses as seat moves: 2.5 V average Faulty control unit Faulty sensor An open or high resistance in the wire Rear Up-Down Sensor Seat rear moving up/down: ON Seat not moving: OFF Power seat control unit/B13 Pulses as seat moves: 2.5 V average Faulty control unit Faulty sensor An open or high resistance in the wire
6. Exit the DATA LIST and select FUNCTION TEST.
7. Do each of the function tests listed in the table shown. The appropriate output should occur. If the function operates normally, go to the next function test. If all function tests operate normally, the system is OK. If the function does not occur, do the appropriate test at the control unit and terminal indicated in the table. Voltage drop tests should be done with the ignition switch in ON (II) or the vehicle ignition in the ON mode, and all connectors connected. Continuity tests should be done with the ignition switch in LOCK (0) or the vehicle ignition in the OFF mode, and indicated terminals disconnected. Jumper tests should be done according to the instructions indicated. If the test indicates that the component operates normally, but the function will not operate by doing the function test or normal use of the component, the control unit that operates that function must be faulty; replace it. If the test indicates that the component does not operate normally, check for an open or short in the harnesses between the component and the control unit. If the harness is OK, replace the component. Function Test Component and Operation Control Unit/Terminal Number/Test (If applicable) Possible cause if desired result is not obtained Power Seat: Slide Motor-Full Forward Seat slides forward Power seat control unit/A8, A18, A17, A7 Disconnect power seat control unit connectors A and B. Connect A8 to A17 and A7 to A18; driver's seat should slide forward. Faulty motor An open or high resistance in the wire A short in the wire Power Seat: Slide Motor-Full Backward Seat slides backward Power seat control unit/A8, A18, A17, A7 Disconnect power seat control unit connectors A and B. Connect A8 to A7 and A17 to A18; driver's seat should slide backward. Faulty motor An open or high resistance in the wire A short in the wire Power Seat: Front Up-Down Motor-Full Up Front of seat moves up Power seat control unit/A8, A18, A16, A6 Disconnect power seat control unit connectors A and B. Connect A8 to A16 and A6 to A18; front of driver's seat should move up. Faulty motor An open or high resistance in the wire A short in the wire Power Seat: Front Up-Down Motor-Full Down Front of seat moves down Power seat control unit/A8, A18, A16, A6 Disconnect power seat control unit connectors A and B. Connect A8 to A6 and A16 to A18; front of driver's seat should move down. Faulty motor An open or high resistance in the wire A short in the wire Power Seat: Rear Up-Down Motor-Full Up Rear of seat moves up Power seat control unit/A1, A4, A2, A10 Disconnect power seat control unit connectors A and B. Connect A1 to A2 and A10 to A4; rear of driver's seat should move up. Faulty motor An open or high resistance in the wire A short in the wire Power Seat: Rear Up-Down Motor-Full Down Rear of seat moves down Power seat control unit/A1, A4, A2, A10 Disconnect power seat control unit connectors A and B. Connect A1 to A10 and A2 to A4; rear of driver's seat should move down. Faulty motor An open or high resistance in the wire A short in the wire Power Seat: Recline Motor-Full Forward Seat-back moves forward Power seat control unit/A1, A4, A9, A11 Disconnect power seat control unit connectors A and B. Connect A1 to A9 and A11 to A4; driver's seat-back should move forward. Faulty motor An open or high resistance in the wire A short in the wire Power Seat: Recline Motor-Full Backward Seat-back moves backward Power seat control unit/A1, A4, A9, A11 Disconnect power seat control unit connectors A and B. Connect A1 to A11 and A9 to A4; driver's seat-back should move backward. Faulty motor An open or high resistance in the wire A short in the wire

Power Seat Control Unit Input Test/Replacement

Note. SRS components are located in this area. Review the SRS component locations (see COMPONENT LOCATION INDEX ), and precautions and procedures (see PRECAUTIONS AND PROCEDURES before doing repairs or servicing. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

Scheme 238

1. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
2. Remove the driver's seat (see «FRONT SEAT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/seats/#seats__front-seat-removalinstallation) ). NOTE: Be careful not to scratch the interior trim.
3. Disconnect the 18P connector (A) and 40P connector (B) from the power seat control unit (C).
4. Inspect the connector and socket terminals to be sure they are all making good contact. If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system. If the terminals look OK, go to step 5.
5. Reconnect the connectors to the power seat control unit, and do the following input tests. If any test indicates a problem, find and correct the cause, then recheck the system. If all the input tests prove OK, go to step 6. Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained B34 BRN Ignition switch ON (II), or power mode ON Measure the voltage to ground: There should be battery voltage. Blown No. 12 (7.5 A) fuse in the driver's under-dash fuse/relay box An open or high resistance in the wire B36 WHT Under all conditions Measure the voltage to ground: There should be battery voltage. Blown No. 15 (10 A) fuse in the under-hood fuse/relay box An open or high resistance in the wire A1 RED Under all conditions Measure the voltage to ground: There should be battery voltage. Blown No. 3-4 (DR F/B STD) (60 A) fuse in the under-hood fuse/relay box Blown No. 21 (20 A) fuse in the driver's under-dash fuse/relay box An open or high resistance in the wire A8 LT BLU Under all conditions Measure the voltage to ground: There should be battery voltage. Blown No. 3-4 (DR F/B STD) (60 A) fuse in the under-hood fuse/relay box Blown No. 19 (20 A) fuse in the driver's under-dash fuse/relay box An open or high resistance in the wire B9 BLK In all ignition switch positions or all power modes Measure the voltage to ground: There should be less than 0.2 V. Poor ground (G602) An open or high resistance in the ground wire A4 BRN In all ignition switch positions or all power modes Measure the voltage to ground: There should be less than 0.2 V. Poor ground (G602) An open or high resistance in the ground wire A18 BRN In all ignition switch positions or all power modes Measure the voltage to ground: There should be less than 0.2 V. Poor ground (G602) An open or high resistance in the ground wire B26 GRN Shift lever in P position Measure the voltage to ground: There should be less than 0.2 V. Faulty transmission range switch Poor ground (G101) or an open in the ground wire An open or high resistance in the wire Shift lever in any position other than P Measure the voltage to ground: There should be about 5 V. Faulty transmission range switch A short to ground in the wire B15 BLU Ignition switch ON (II), or power mode ON Measure the voltage to ground: There should be at least about 10 V. Faulty power seat control unit Faulty position sensor A short to ground in the wire B10 • B29 GRN • ORN Run the recline motor Measure the voltage between terminals B10 (+) and B29 (-): There should be about 2.5 V average. Faulty position sensor An open or high resistance in the wire A short to ground in the wire B11 • B29 WHT • ORN Run the slide motor Measure the voltage between terminals B11 (+) and B29 (-): There should be about 2.5 V average. Faulty position sensor An open or high resistance in the wire A short to ground in the wire B12 • B29 RED • ORN Run the front up-down motor Measure the voltage between terminals B12 (+) and B29 (-): There should be about 2.5 V average. Faulty position sensor An open or high resistance in the wire A short to ground in the wire B13 • B29 YEL • ORN Run the rear up-down motor Measure the voltage between terminals B13 (+) and B29 (-): There should be about 2.5 V average. Faulty position sensor An open or high resistance in the wire A short to ground in the wire B1 • B7 BLU • GRY Slide switch to the FORWARD position Measure the voltage between the terminals: There should be less then 0.2 V. Faulty driver's power seat adjustment switch An open or high resistance in the wire B1 • B24 BLU • LT GRN Slide switch to the BACKWARD position Measure the voltage between the terminals: There should be less then 0.2 V. Faulty driver's power seat adjustment switch An open or high resistance in the wire B1 • B6 BLU • LT BLU Recline switch to the FORWARD position Measure the voltage between the terminals: There should be less then 0.2 V. Faulty driver's power seat adjustment switch An open or high resistance in the wire B1 • B23 BLU • GRN Recline switch to the BACKWARD position Measure the voltage between the terminals: There should be less then 0.2 V. Faulty driver's power seat adjustment switch An open or high resistance in the wire B1 • B5 BLU • ORN Front up-down switch in UP position Measure the voltage between the terminals: There should be less then 0.2 V. Faulty driver's power seat adjustment switch An open or high resistance in the wire B1 • B4 BLU • RED Front up-down switch in DOWN position Measure the voltage between the terminals: There should be less then 0.2 V. Faulty driver's power seat adjustment switch An open or high resistance in the wire B1 • B22 BLU • PNK Rear up-down switch in UP position Measure the voltage between the terminals: There should be less then 0.2 V. Faulty driver's power seat adjustment switch An open or high resistance in the wire B1 • B3 BLU • WHT Rear up-down switch in DOWN position Measure the voltage between the terminals: There should be less then 0.2 V. Faulty driver's power seat adjustment switch An open or high resistance in the wire
6. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
7. Disconnect the connectors from the power seat control unit, and do these input tests at the following connectors. If any test indicates a problem, find and correct the cause, then recheck the system. If all the input tests prove OK, the control unit must be faulty; replace it.

Power Mirror Control Unit Input Test/Replacement

Note. Before troubleshooting the DPMS, troubleshoot the multiplex integrated control system first using B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

Scheme 239

1. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
2. Remove the driver's dashboard undercover (see «DRIVER'S DASHBOARD UNDERCOVER REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/gauges-instrument-panels/#dashboard) ).
3. Disconnect the 24P connector (A) from the power mirror control unit (B).
4. Inspect the connector and socket terminals to be sure they are all making good contact. If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system. If the terminals look OK, go to step 5.
5. Reconnect the connector to the power mirror control unit, and do the following input tests. If any test indicates a problem, find and correct the cause, then recheck the system. If all the input tests prove OK, go to step 6. Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained 11 BRN Ignition switch ON (II), or power mode ON Measure the voltage to ground: There should be battery voltage. Blown No. 12 (7.5 A) fuse in the driver's under-dash fuse/relay box An open or high resistance in the wire 24 WHT Under all conditions Measure the voltage to ground: There should be battery voltage. Blown No. 15(10 A) fuse in the under-hood fuse/relay box An open or high resistance in the wire 22 BLK In all ignition switch positions or all power modes Measure the voltage to ground: There should be less than 0.2 V. Poor ground (G402) An open or high resistance in the ground wire 1 • 2 YEL • BLU Ignition switch ON (II), or power mode ON, and mirror select switch in LEFT, then mirror down switch pressed Measure the voltage to ground: There should be battery voltage. Blown No. 16 (7.5 A) fuse in the driver's under-dash fuse/relay box Faulty power mirror switch An open or high resistance in the wire 8 • 9 PNK • GRY Ignition switch ON (II), or power mode ON, and mirror select switch in RIGHT, then mirror down switch pressed Measure the voltage to ground: There should be battery voltage. Blown No. 16 (7.5 A) fuse in the driver's under-dash fuse/relay box Faulty power mirror switch An open or high resistance in the wire 10 LT GRN Ignition switch ON (II), or power mode ON, and mirror select switch in LEFT or RIGHT, then mirror up switch pressed Measure the voltage to ground: There should be battery voltage. Blown No. 16 (7.5 A) fuse in the driver's under-dash fuse/relay box Faulty power mirror switch An open or high resistance in the wire 7 IT BLU Ignition switch ON (II), or power mode ON Measure the voltage to ground: There should be about 5 V. Faulty mirror position sensor A short to ground in the wire 4 • 6 PNK • GRN Swing the left mirror from full left to full right Measure the voltage between terminals No. 4 and No. 6: There should be about 0.5 V to 4.5 V. Faulty left mirror position sensor An open or high resistance in the wire A short to ground in the wire 5 • 6 PUR • GRN Move the left mirror from full up to full down Measure the voltage between terminals No. 5 and No. 6: There should be about 0.5 V to 4.5 V. Faulty left mirror position sensor An open or high resistance in the wire A short to ground in the wire 20 • 6 BLU • GRN Swing the right mirror from full left to full right Measure the voltage between terminals No. 20 and No. 6: There should be about 0.5 V to 4.5 V. Faulty right mirror position sensor An open or high resistance in the wire A short to ground in the wire 19 • 6 ORN • GRN Move the right mirror from full up to full down Measure the voltage between terminals No. 19 and No. 6: There should be about 0.5 V to 4.5 V. Faulty right mirror position sensor An open or high resistance in the wire A short to ground in the wire
6. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
7. Disconnect the connectors from the power mirror control unit, and do the following input tests. If any test indicates a problem, find and correct the cause, then recheck the system. If all the input tests prove OK, the control unit must be faulty; replace it.

Power Tilt/Telescopic Steering Control Unit Input Test/Replacement

Note. Before troubleshooting the DPMS, troubleshoot the multiplex integrated control system first using B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

Scheme 240

1. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
2. Remove the driver's dashboard undercover (see «DRIVER'S DASHBOARD UNDERCOVER REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/gauges-instrument-panels/#dashboard) ).
3. Disconnect the 16P connector (A) and 8P connector (B) from the power title/telescopic steering control unit (C).
4. Inspect the connector and socket terminals to be sure they are all making good contact. If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system. If the terminals look OK, go to step 5.
5. Reconnect the connector to the power tilt/telescopic steering control unit, and do the following input tests: If any test indicates a problem, find and correct the cause, then recheck the system. If all the input tests prove OK, go to step 6. Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained A1 WHT Under all conditions Measure the voltage to ground: There should be battery voltage. Blown No. 15 (10 A) fuse in the under-hood fuse/relay box An open or high resistance in the wire A9 BRN Ignition switch ON (II), or power mode ON Measure the voltage to ground: There should be battery voltage. Blown No. 12 (7.5 A) fuse in the driver's under-dash fuse/relay box An open or high resistance in the wire B3 PNK Under all conditions Measure the voltage to ground: There should be battery voltage. Blown No. 7 (20 A) fuse in the auxiliary under-hood fuse/relay box An open or high resistance in the wire B5 RED Under all conditions Measure the voltage to ground: There should be battery voltage. Blown No. 8 (20 A) fuse in the auxiliary under-hood fuse box An open or high resistance in the wire A8 BRN In all ignition switch positions or all power modes Measure the voltage to ground: There should be less than 0.2 V. Poor ground (G402, G403) An open or high resistance in the ground wire B1 BLK A6 • A10 GRY • LT BLU TELESCOPIC switch in PULL position Measure the voltage between the terminals: There should be less then 0.2 V. Faulty power tilt/telescopic steering switch An open or high resistance in the wire A15 • A14 BRN • PUR TELESCOPIC switch in PULL position Measure the voltage between the terminals: There should be less then 0.2 V. Faulty power tilt/telescopic steering switch An open or high resistance in the wire A15 • A6 BRN • GRY TELESCOPIC switch in PUSH position Measure the voltage between the terminals: There should be less then 0.2 V. Faulty power tilt/telescopic steering switch An open or high resistance in the wire A14 • A10 PUR • LT BLU TELESCOPIC switch in PUSH position Measure the voltage between the terminals: There should be less then 0.2 V. Faulty power tilt/telescopic steering switch An open or high resistance in the wire A6 • A10 GRY • LT BLU TILT switch in UP position Measure the voltage between the terminals: There should be less then 0.2 V. Faulty power tilt/telescopic steering switch An open or high resistance in the wire A15 © A7 BRN • LT GRN TILT switch in UP position Measure the voltage between the terminals: There should be less then 0.2 V. Faulty power tilt/telescopic steering switch An open or high resistance in the wire A15 • A6 BRN • GRY TILT switch in DOWN position Measure the voltage between the terminals: There should be less then 0.2 V. Faulty power tilt/telescopic steering switch An open or high resistance in the wire A7 • A10 LT GRN • LT BLU TILT switch in DOWN position Measure the voltage between the terminals: There should be less then 0.2 V. Faulty power tilt/telescopic steering switch An open or high resistance in the wire
6. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode, then disconnect the connectors from the power tilt/telescopic steering control unit, and do the following input tests. If any test indicates a problem, find and correct the cause, then recheck the system. If all the input tests prove OK, the control unit must be faulty; replace it.

Scheme 241

1. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
2. Remove the driver's door panel (see «FRONT DOOR PANEL REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/exterior-body-panels/#doors__front-door-panel-removalinstallation) ).
3. Disconnect the 37P connector (A) from the power window master switch (B).
4. Inspect the connector and socket terminals to be sure they are all making good contact. If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system. If the terminals look OK, go to step 5.
5. Reconnect the driver's door harness to driver's door subharness.
6. Reconnect the connector to the power window master switch, and do the following input tests: If any test indicates a problem, find and correct the cause, then recheck the system. If all the input tests prove OK, go to step 7. Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained 13 WHT Under all conditions Measure the voltage to ground: There should be battery voltage. Blown No. 15 (10 A) fuse in the under-hood fuse/relay box An open or high resistance in the wire 14 LT GRN Ignition switch ON (II), or ignition mode ON Measure the voltage to ground: There should be battery voltage. Blown No. 16 (7.5 A) fuse in the driver's under-dash fuse/relay box An open or high resistance in the wire 25 WHT Under all conditions Measure the voltage to ground: There should be battery voltage. Blown No. 3-4 (DR F/B STD) (60 A) fuse in the under-hood fuse/relay box Blown No. 24 (20 A) fuse in the driver's under-dash fuse/relay box An open or high resistance in the wire 32 BLK In all ignition switch positions or all power modes Measure the voltage to ground: There should be less than 0.2 V. Poor ground (G402) An open or high resistance in the ground wire 37 BLK In all ignition switch positions or all power modes Measure the voltage to ground: There should be less than 0.2 V. Poor ground (G401) An open or high resistance in the ground wire 16 RED Ignition switch ON (II), or ignition mode ON, POSITION 2 switch pressed Measure the voltage to ground: There should be less than 0.2 V. Faulty driving position memory switch Poor ground (G402) or an open in the ground wire An open or high resistance in the wire Ignition switch ON (II), or ignition mode ON, POSITION 2 switch released Measure the voltage to ground: There should be about 5 V. Faulty driving position memory switch A short to ground in the wire 17 GRN Ignition switch ON (II), or ignition mode ON, POSITION 1 switch pressed Measure the voltage to ground: There should be less than 0.2 V. Faulty driving position memory switch Poor ground (G402) or an open in the ground wire An open or high resistance in the wire Ignition switch ON (II), or ignition mode ON, POSITION 1 switch released Measure the voltage to ground: There should be about 5 V. Faulty driving position memory switch A short to ground in the wire 19 ORN Ignition switch ON (II), or ignition mode ON, SET switch pressed Measure the voltage to ground: There should be less than 0.2 V. Faulty driving position memory switch Poor ground (G402) or an open in the ground wire An open or high resistance in the wire Ignition switch ON (II), or ignition mode ON, SET switch released Measure the voltage to ground: There should be about 5 V. Faulty driving position memory switch A short to ground in the wire
7. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
8. Disconnect the connector from the power window master switch, and do the following input tests: If any test indicates a problem, find and correct the cause, then recheck the system. If all the input tests prove OK, the door multiplex control unit must be faulty; replace the power window master switch (see «REAR POWER WINDOW SWITCH TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/windows/#power-windows) ).

Note. After replacing the power window master switch, reset the power window control unit (see RESETTING THE POWER WINDOW CONTROL UNIT ).

Scheme 242

Scheme 243

1. Remove the driver's door panel (see «FRONT DOOR PANEL REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/exterior-body-panels/#doors__front-door-panel-removalinstallation) ).
2. Disconnect the 7P connector (A) from the driver's position memory switch (B).
3. Remove the two screws, then remove the switch from the door panel.
4. Check for continuity between the terminals in each switch position according to the table. NOTE: Make sure the correct test lead (+ or -) is placed on the terminal. When checking for continuity across the diode, use the diode setting (-->|-) on the digital volt/ohm meter to check the diode bias. Note this important operating characteristic; diode bias causes a diode to fully conduct electricity in one direction (forward), while not at all in the opposite direction (reverse).
5. If the continuity is not as specified, replace the switch.
6. Install the parts in the reverse order of removal.

Power Seat Adjustment Switch Test/Replacement

Note. SRS components are located in this area. Review the SRS component locations (see COMPONENT LOCATION INDEX ), and precautions and procedures (see PRECAUTIONS AND PROCEDURES ) before doing repairs or servicing.

Scheme 244

Scheme 245

1. Remove the driver's seat (see «FRONT SEAT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/seats/#seats__front-seat-removalinstallation) ).
2. Remove the power seat adjustment switch knobs (A) and the recline cover from the driver's seat (see «FRONT SEAT RECLINE COVER REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/seats/#seats__front-seat-recline-cover-removalinstallation) ).
3. Remove the two screws and the power seat adjustment switch (B).
4. Disconnect the 12P connector from the power seat adjustment switch.
5. Reinstall the adjustment switch knobs to the switch.
6. Check for continuity between the terminals in each position according to the table.
7. If the continuity is not as specified, replace the switch.
8. Install the parts in the reverse order of removal.

Driver's Power Seat Motor Test

Note. SRS components are located in this area. Review the SRS component locations (see COMPONENT LOCATION INDEX ), and precautions and procedures (see PRECAUTIONS AND PROCEDURES ) before doing repairs or servicing.

Scheme 246

1. Remove the driver's seat (see «FRONT SEAT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/seats/#seats__front-seat-removalinstallation) ).
2. Disconnect the connector from each power seat motor. NOTE: For the recline motor, remove the seat-back panel (see «FRONT SEAT-BACK COVER REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#seats__front-seat-back-cover-replacement) ). All connectors are terminal side of male terminals.
3. Test each motor by connecting power and ground according to the table. When the motor stops running, disconnect battery power immediately. Terminal 1 5 Position SLIDE MOTOR Forward (+) (-) Backward (-) (+) Terminal 1 2 Position RECLINE MOTOR Forward (+) (-) Backward (-) (+) Terminal 1 2 Position FRONT UP-DOWN MOTOR UP (+) (-) DOWN (-) (+) Terminal 1 2 Position REAR UP-DOWN MOTOR UP (-) (+) DOWN (+) (-)
4. If the motor does not run or fails to run smoothly, replace: Slide motor (see «FRONT SEAT SLIDE MOTOR REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#seats__front-seat-slide-motor-replacement) ) Front up-down motor/seat frame (see «FRONT SEAT FRAME REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#seats__front-seat-frame-replacement) ) Rear up-down motor/seat frame (see «FRONT SEAT FRAME REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#seats__front-seat-frame-replacement) ) Recline motor (see «FRONT SEAT RECLINE MOTOR REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#seats__front-seat-recline-motor-replacement) ) NOTE: The front and rear up-down motors are part of the seat frame.

Scheme 247

Scheme 248

1. Remove the steering column covers (see «COLUMN COVER REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/gauges-instrument-panels/#dashboard__column-cover-removalinstallation) ).
2. Disconnect the 13P connector (A) from the power tilt/telescopic steering switch (B).
3. Check for continuity between the terminals in each switch position according to the table.
4. If the continuity is not as specified, replace the switch.
5. Install the parts in the reverse order of removal.

Scheme 249

1. Remove the steering column covers (see «COLUMN COVER REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/gauges-instrument-panels/#dashboard__column-cover-removalinstallation) ).
2. Disconnect the 6P connector and 8P connector from the power tilt/telescopic steering motors.
3. Check each motor by connecting power and ground according to the table. When the motor stops running, disconnect battery power immediately. POWER TILT MOTOR Terminal 2 3 Position TILT UP (-) (+) TILT DOWN (+) (-) POWER TELESCOPIC MOTOR Terminal 1 2 Position TELESCOPIC IN (-) (+) TELESCOPIC OUT (+) (-)
4. If the motor does not run or fails to run smoothly; replace the steering column assembly (see «STEERING COLUMN REMOVAL AND INSTALLATION»(/acura/zdx/i-2009-2013/remont/manual-power-steering/#power-steering-system__steering-column-removal-and-installation) ).

See also:
• SYSTEM DESCRIPTION
• TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A
• FRONT SEAT SLIDE MOTOR REPLACEMENT
• FRONT SEAT FRAME REPLACEMENT
• FRONT SEAT RECLINE MOTOR REPLACEMENT
• DRIVER'S DASHBOARD UNDERCOVER REMOVAL/INSTALLATION
• POWER MIRROR ACTUATOR REPLACEMENT
• STEERING COLUMN REMOVAL AND INSTALLATION
• GAUGE CONTROL MODULE REPLACEMENT
• REAR POWER WINDOW SWITCH TEST/REPLACEMENT
• COMPONENT LOCATION INDEX
• FRONT SEAT REMOVAL/INSTALLATION
• FRONT DOOR PANEL REMOVAL/INSTALLATION
• RESETTING THE POWER WINDOW CONTROL UNIT
• FRONT SEAT RECLINE COVER REMOVAL/INSTALLATION
• FRONT SEAT-BACK COVER REPLACEMENT
• COLUMN COVER REMOVAL/INSTALLATION
• POWER SEAT CONTROL UNIT INPUT TEST/REPLACEMENT
• DTC B1836 TROUBLESHOOTING
• DRIVER'S POWER SEAT MOTOR TEST
• DTCS TROUBLESHOOTING
• POWER MIRROR CONTROL UNIT INPUT TEST/REPLACEMENT
• POWER TILT/TELESCOPIC STEERING CONTROL UNIT INPUT TEST/REPLACEMENT
• POWER SEAT ADJUSTMENT SWITCH TEST/REPLACEMENT