Driving Position Memory Systems (dpms) Acura TL III

Scheme 1

Scheme 2

System Description

The driver's seat and the power mirrors have a memory feature. All the adjustments can be memorized by pressing the MEMO 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 and the mirrors to the memorized positions. 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 Control System Description (see SYSTEM DESCRIPTION ).

DPMS is linked to the keyless transmitters 1 and 2. Depending on which keyless transmitter unlocks the driving memory position 1 or 2 is chosen. To turn remote DPMS feature ON linked or OFF unlinked, press and hold the LOCK and UNLOCK buttons on the keyless transmitter for about 1 second. The LED on the keyless transmitter blinks once when linked, and twice when unlinked, refer to Keyless Entry/Security Alarm System Descriptions (see SYSTEM DESCRIPTION ) for more information.

Memory Retrieve

When one of the two buttons on the driving position memory switch is pressed with the vehicle parked (shift lever in P position) and the driver's door closed, the seat and the mirrors move to the memorized positions.

Power Seat Position Sensors

Each motor has a sensor which 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

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

Reverse Mirror Control

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

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General Troubleshooting Information

Note. Before troubleshoot the DPMS, refer to B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

The self-diagnostic function of the driving position memory system detects system problems. This information can be retrieved by displaying diagnostic trouble code on the driving position memory switch indicator.

Scheme 9

1. Turn the ignition switch OFF, and move the seat to a non-memorized position.
2. Press and hold the MEMO button (A) and both position buttons (B) at the same time.
3. Turn the ignition switch ON (II), and wait at least 1 second, then release the three buttons.
4. After 1 second, the position button indicators (C) will blink to show the DTC.

No System Problem Pattern

If there is no DTC stored, the indicators blink only once (3 seconds).

Scheme 10

System Problem Pattern

If a system problem occurs and a DTC is stored, the indicators will show the DTC. The first digit is indicated by the number of long (1 second) blinks, and the second digit is indicated by the number of short (0.26 second) blinks. There is a 3 second break between each DTC when there are multiple DTCs.

Scheme 11

Canceling the DTC Indication

1. Turn the ignition switch OFF or
2. Press the MEMO button, or position button 1, or position button 2, or
3. Press one of the driving position adjustment switches.

With the HDS

Use the HDS to clear DTCs in the power seat/mirror mode of the body electrical system select menu.

Without the HDS

Make sure you have the anti-theft code for the radio and the navigation system, then write down the frequencies for the XM radio channel presets. Make sure the ignition switch is OFF. Disconnect the negative battery cable for at least 30 seconds. After reconnecting the battery, enter the anti-theft codes for the radio and the navigation system, then enter the customer's XM radio channel presets. Reset the clock.

Erasing the Driving Position from Memory

1. Press and hold all three driving position memory switch bottoms.
2. Turn the ignition switch ON (II).
3. Continue to hold all three driving position memory switches for more than 5 seconds, and release them in less than 10 seconds.
4. The buzzer will sound for 500 ms to confirm that all driving position data is erased.

Diagnostic Trouble Code (DTC) Index

DIAGNOSTIC TROUBLE CODE

System Input Test and Function Test

1. Connect the HDS to the DLC.
2. Turn the ignition switch ON (II).
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/tl/iii-2003-2006/remont/communication-devices/#multiplex-intergrated-control-system__troubleshooting-b-can-system-diagnosis-test) ). If no DTCs are found, go to step 4 .
4. Exit the DTC mode and select Data List from the Power Seat/Power Mirror Test Mode Menu.
5. Test each input and monitor each output under the condition listed 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, perform the appropriate test at the control unit and terminal indicated in the table. Volt drop tests should be performed with the ignition switch ON and all connectors connected and the meter negative test lead attached to a good body ground. Continuity tests should be performed with the ignition switch OFF and indicated terminals disconnected. SYSTEM INPUT TEST AND FUNCTION TEST Data List Input/Command Condition: Data List Indication Control Unit/Terminal Number/Test (If applicable) Possible cause if result is not obtained Slide Switch Forward Slide switch forward: ON Switch released: OFF Power seat control unit/A6, A5 (YEL/BLK) Faulty switch (see «SWITCH TEST/REPLACEMENT»(/acura/tl/iii-2003-2006/remont/memory-modules/#driving-position-memory-systems-dpms) ) An open in the wire A short in the wire Faulty control unit Slide Switch Backward Slide switch back: ON Switch released: OFF Power seat control unit/A16, A5 (YEL/RED) Faulty switch (see «SWITCH TEST/REPLACEMENT»(/acura/tl/iii-2003-2006/remont/memory-modules/#driving-position-memory-systems-dpms) ) An open in the wire A short in the wire Faulty control unit Recline Switch Forward Recline switch forward: ON Switch released: OFF Power seat control unit/C1, A5 (RED/WHT) Faulty switch (see «SWITCH TEST/REPLACEMENT»(/acura/tl/iii-2003-2006/remont/memory-modules/#driving-position-memory-systems-dpms) ) An open in the wire A short in the wire Faulty control unit Recline Switch Backward Recline switch backward: ON Switch open: OFF Power seat control unit/C7, A5 (RED/YEL) Faulty switch (see «SWITCH TEST/REPLACEMENT»(/acura/tl/iii-2003-2006/remont/memory-modules/#driving-position-memory-systems-dpms) ) An open in the wire A short in the wire Faulty control unit Front Up-Down Switch Up Front up-down switch up: ON Switch released: OFF Power seat control unit/C2, A5 (GRN/WHT) Faulty switch (see «SWITCH TEST/REPLACEMENT»(/acura/tl/iii-2003-2006/remont/memory-modules/#driving-position-memory-systems-dpms) ) An open in the wire A short in the wire Faulty control unit Front Up-Down Switch Down Front up-down switch down: ON Switch released: OFF Power seat control unit/C8, A5 (GRN/BLK) Faulty switch (see «SWITCH TEST/REPLACEMENT»(/acura/tl/iii-2003-2006/remont/memory-modules/#driving-position-memory-systems-dpms) ) An open in the wire A short in the wire Faulty control unit Rear Up-down switch Up Rear up-down switch up: ON Switch released: OFF Power seat control unit/C3, A5 (BLU/ORN) Faulty switch (see «SWITCH TEST/REPLACEMENT»(/acura/tl/iii-2003-2006/remont/memory-modules/#driving-position-memory-systems-dpms) ) An open in the wire A short in the wire Faulty control unit Rear Up-down Switch Down Rear up-down switch down: ON Switch released: OFF Power seat control unit/C9, A5 (BLU/RED) Faulty switch (see «SWITCH TEST/REPLACEMENT»(/acura/tl/iii-2003-2006/remont/memory-modules/#driving-position-memory-systems-dpms) ) An open in the wire A short in the wire Faulty control unit Reverse Switch Transmission in R: ON Transmission out of R: OFF Power seat control unit/A17 (GRN) Transmission in R: 12 V Faulty switch An open in the wire Faulty control unit Ignition switch for power seat control Ignition switch on (II): ON Ignition switch off: OFF Power seat control unit/A9 (YEL/GRN) Ignition switch ON (II): 12 V Blown No. 20 (7.5 A or 15 A) fuse in the under-dash fuse/relay box An open in the wire Faulty control unit Slide Sensor Seat moving forward or rearward: ON Seat not moving: OFF Power seat control unit/A2 (BLU) Pulses as seat moves, 2.5 V average Faulty sensor An open in the wire Faulty control unit Front Up-Down Sensor Seat front moving up/down: ON Seat not moving: OFF Power seat control unit/A12 (GRN/BLK) Pulses as seat moves, 2.5 V average Faulty sensor An open in the wire Faulty control unit Recline Sensor Seat back moving forward or rearward: ON Seat not moving: OFF Power seat control unit/C5 (YEL/BLK) Pulses as seat moves, 2.5 V average Faulty sensor An open in the wire Faulty control unit Rear Up-down Sensor Seat rear moving up/down: ON Seat not moving: OFF Power seat control unit/C11 (RED/BLK) Pulses as seat moves, 2.5 V average Faulty sensor An open in the wire Faulty control unit Mirror Select Switch LEFT Mirror select switch in LEFT position: ON Select switch in CENTER or RIGHT position: OFF Power mirror control unit/6 (PNK/BLK) Mirror Select switch LEFT: 0 V; CENTER or RIGHT: 5 V Faulty switch An open in the wire A short in the wire Faulty control unit Mirror Select Switch RIGHT Mirror select switch in RIGHT position: ON Select switch in CENTER or LEFT position: OFF Power mirror control unit/19 (PNK) Mirror Select switch RIGHT: 0 V; CENTER or LEFT: 5 V Faulty switch An open in the wire A short in the wire Faulty control unit Mirror Select Switch CENTER Mirror select switch in CENTER position: ON Select switch in RIGHT or LEFT position: OFF Power mirror control unit/6 (PNK/BLK), 19 (PNK) Mirror Select switch CENTER: 5 V each RIGHT or [LEFT] : 6 (5 V), 19 (0 V) [6 (0 V), 19 (5 V)] Faulty switch An open in the wire A short in the wire Faulty control unit Mirror Left Switch Mirror select switch in LEFT, then RIGHT Mirror left switch pressed: ON Mirror switch released: OFF Power mirror control unit/20 (PNK/BLU), 21 (PUR/WHT), 22 (LT GRN), 6 (PNK/BLK), 19 (PNK) Mirror Select switch LEFT, left switch pressed: 20 (12 V), 21 (12 V), 22 (0 V), 6 (0 V), 19 (5 V) Mirror Select switch RIGHT, left switch pressed: 20 (12 V), 21 (0 V), 22 (12 V), 6 (5 V), 19 (0 V) Faulty switch An open in the wire A short in the wire Faulty control unit Mirror Right Switch Mirror select switch in LEFT, then RIGHT Mirror right switch pressed: ON Mirror switch released: OFF Power mirror control unit/20 (PNK/BLU), 21 (PUR/WHT), 22 (LT GRN), 6 (PNK/BLK), 19 (PNK) Mirror Select switch LEFT, right switch pressed: 20 (0 V), 21 (0 V), 22 (0 V), 6 (12 V), 19 (5 V) Mirror Select switch RIGHT, left switch pressed: 20 (0 V), 21 (0 V), 22 (0 V), 6 (5 V), 19 (12 V) Faulty switch An open in the wire A short in the wire Faulty control unit Mirror Up Switch Mirror select switch in LEFT, then RIGHT Mirror up switch pressed: ON Mirror switch released: OFF Power mirror control unit/20 (PNK/BLU), 21 (PUR/WHT), 22 (LT GRN), 6 (PNK/BLK), 19 (PNK) Mirror Select switch LEFT, up switch pressed: 20 (12 V), 21 (0 V), 22 (0 V), 6 (0 V), 19 (5 V) Mirror Select switch RIGHT, left switch pressed: 20 (12 V), 21 (0 V), 22 (0 V), 6 (5 V), 19 (0 V) Faulty switch An open in the wire A short in the wire Faulty control unit Mirror Down Switch Mirror select switch in LEFT, then RIGHT Mirror down switch pressed: ON Mirror switch released: OFF Power mirror control unit/20 (PNK/BLU), 21 (PUR/WHT), 22 (LT GRN), 6 (PNK/BLK), 19 (PNK) Mirror Select switch LEFT, up switch pressed: 20 (12 V), 21 (0 V), 22 (0 V), 6 (0 V), 19 (5 V) Mirror Select switch RIGHT, left switch pressed: 20 (12 V), 21 (0 V), 22 (0 V), 6 (5 V), 19 (0 V) Faulty switch An open in the wire A short in the wire Faulty control unit Ignition Switch for Power Mirror Control Ignition switch on (II): ON Ignition switch off: OFF Power mirror control unit/12 (YEL/GRN) Ignition switch on: Battery Voltage Blown No. 20 (7.5 A or 15 A) fuse in the under-dash fuse/relay box An open in the wire Faulty control unit Seat MEMO Switch Seat MEMO switch pressed: ON Switch released: OFF Door multiplex control unit/A13 (GRY/BLU) Seat MEMO switch pressed: 0 V; Switch released: 5 V or more Faulty switch An open in the wire Faulty control unit Driver 1 position Switch Driver position 1 switch pressed: ON Switch released: OFF Door multiplex control unit/A4 (BLU/YEL) Driver position 1 switch pressed: 0 V; Switch released: 5 V or more Faulty switch An open in the wire Faulty control unit Driver 2 position Switch Driver position 2 switch pressed: ON Switch released: OFF Door multiplex control unit/A3 (RED/YEL) Driver position 2 switch pressed: 0 V; Switch released: 5 V or more Faulty switch An open in the wire Faulty control unit Right Mirror Horizontal Sensor Right mirror moves left/right: ON Right mirror stopped: OFF Power mirror control unit/8 (RED/WHT), 7 (LT GRN/RED), 18 (GRY/RED) Right mirror moving from full right to full left: 8 (5 V), 7 (0 V), 18 (about 0.5 V to about 4.5 V) Faulty sensor An open in the wire Faulty control unit Right Mirror Vertical Sensor Right mirror moves up/down: ON Right mirror stopped: OFF Power mirror control unit/8 (RED/WHT), 7 (LT GRN/RED), 17 (LT BLU) Right mirror moving from full down to full up: 8 (5 V), 7 (0 V), 17 (about 0.5 V to about 4.5 V) Faulty sensor An open in the wire Faulty control unit Left Mirror Horizontal Sensor Left mirror moves left/right: ON Right mirror stopped: OFF Power mirror control unit/8 (RED/WHT), 7 (LT GRN/RED), 4 (WHT/BLK) Left mirror moving from full left to full right: 8 (5 V), 7 (0 V), 4 (about 0.5 V to about 4.5 V) Faulty sensor An open in the wire Faulty control unit Left Mirror Vertical Sensor Left mirror moves up/down: ON Right mirror stopped: OFF Power mirror control unit/8 (RED/WHT), 7 (LT GRN/RED), 5 (GRY) Left mirror moving from full down to full up: 8 (5 V), 7 (0 V), 5 (about 0.5 V to about 4.5 V) Faulty sensor An open in the wire Faulty control unit Right Mirror Horizontal Motor command Right mirror commanded to move left/right: ON Right mirror stopped: OFF Function Test: Go to step 6 N/A Right Mirror Vertical Motor command Right mirror commanded to move up/down: ON Right mirror stopped: OFF Function Test: Go to step 6 N/A Left Mirror Horizontal Motor command Left mirror commanded to move left/right: ON Left mirror stopped: OFF Function Test: Go to step 6 N/A Left Mirror Vertical Motor command Left mirror commanded to move up/down: ON Left mirror stopped: OFF Function Test: Go to step 6 N/A Driver 1 Position Indicator Driver 1 Position Indicator on: ON Driver 1 Position Indicator off: OFF Function Test: Go to step 6 N/A Driver 2 Position Indicator Driver 2 Position Indicator on: ON Driver 2 Position Indicator off: OFF Function Test: Go to step 6 N/A Slide Motor Command As seat moves forward or rearward: ON Seat not moving: OFF Function Test: Go to step 6 N/A Recline Motor Command As seat back moves forward or rearward: ON Set not moving: OFF Function Test: Go to step 6 N/A Front Height Motor Command As front of seat moves up or down: ON Seat not moving: OFF Function Test: Go to step 6 N/A Rear Height Motor Command As rear of seat moves up or down: ON Seat not moving: OFF Function Test: Go to step 6 N/A Power Seat Buzzer Command Power seat buzzer commanded on: ON Power seat buzzer commanded off: OFF Function Test: Go to step 6 N/A
6. Exit the Data list and select Function Test.
7. Perform each of the function tests listed in the table below. 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, perform the appropriate test at the control unit and terminal indicated in the table. Volt drop tests should be performed with the ignition switch ON (II) and all connectors connected Continuity tests should be perform with the ignition switch OFF 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 the function test or the 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. Power Seat Indicator SYSTEM INPUT TEST AND FUNCTION TEST Function Test Component and operation Control Unit/Terminal Number/Test (If applicable) Possible cause if result is not obtained Memory Seat Indicator 1 Memory seat indicator 1 Illuminates Door multiplex control unit/A22 (LT GRN/RED), A12 (LT BLU) Disconnect Door Multiplex control unit connector A. Apply 12 V to A22, ground to A12; memory seat indicator 1 should Illuminate. Faulty switch An open in the wire A short in the wire Memory Seat Indicator 2 Memory seat indicator 2 Illuminates Door multiplex control unit/A22 (LT GRN/RED), A11 (GRY/RED) Disconnect Door Multiplex control unit connector A. Apply 12 V to A22, ground to A11; memory seat indicator 2 should Illuminate. Faulty switch An open in the wire A short in the wire Power Seat SYSTEM INPUT TEST AND FUNCTION TEST Function Test Component and operation Control Unit/Terminal Number/Test (If applicable) Possible cause if result is not obtained Slide Motor-Full Forward Seat slides forward Power seat control unit/B3 (WHT/BLU), B7 (BLK), B1 (BLU), B5 (BLU/YEL) Disconnect power seat control unit connector B. Connect B3 to B1 and B7 to B5; driver's seat should slide forward. Faulty motor An open in the wire A short in the wire Slide Motor-Full Backward Seat slides rearward Power seat control unit/B3 (WHT/BLU), B7 (BLK), B1 (BLU), B5 (BLU/YEL) Disconnect power seat control unit connector B. Connect B3 to B5 and B7 to B1; driver's seat should slide rearward. Faulty motor An open in the wire A short in the wire Front UP-DOWN Motor-Full Up Front of seat moves up Power seat control unit/B3 (WHT/BLU), B7 (BLK), B4 (GRN), B8 (GRN/YEL) Disconnect power seat control unit connector B. Connect B3 to B8 and B7 to B4; front of driver's seat should move down. Faulty motor An open in the wire A short in the wire Front UP-DOWN Motor-Full Down Front of seat moves down Power seat control unit/B3 (WHT/BLU), B7 (BLK), B4 (GRN), B8 (GRN/YEL) Disconnect power seat control unit connector B. Connect B3 to B4 and B7 to B8; front of driver's seat should move down. Faulty motor An open in the wire A short in the wire Rear Up-Down Motor-Full Up Seat moves up Power seat control unit/D4 (WHT/RED), D1 (BLK), D5 (RED/ YEL), D2 (RED) Disconnect power seat control unit connector D. Connect D4 to D5 and D1 to D2; driver's seat should move up. Faulty motor An open in the wire A short in the wire Rear Up-Down Motor-Full Down Seat moves down Power seat control unit/D4 (WHT/RED), D1 (BLK), D5 (RED/ YEL), D2 (RED) Disconnect power seat control unit connector D. Connect D4 to D2 and D1 to D5; driver's seat should move down. Faulty motor An open in the wire A short in the wire Recline Motor-Full Forward Seat back moves forward Power seat control unit/D4 (WHT/RED), D1 (BLK), D6 (YEL/GRN), D3 (YEL) Disconnect power seat control unit connector D. Connect D4 to D6 and D1 to D3; driver's seat back should move forward. Faulty motor An open in the wire A short in the wire Recline Motor-Full Backward Seat back moves backward Power seat control unit/D4 (WHT/RED), D1 (BLK), D6 (YEL/GRN), D3 (YEL) Disconnect power seat control unit connector D. Connect D4 to D3 and D1 to D6; driver's seat back should move backward. Faulty motor An open in the wire A short in the wire Power Mirror SYSTEM INPUT TEST AND FUNCTION TEST Function Test Component and operation Control Unit/Terminal Number/Test (If applicable) Possible cause if result is not obtained Left Power Mirror-Full Up Left power mirror moves up Power mirror control unit/26 (GRY/BLU), 25 (BLK), 3 (GRN/YEL), 2 (BLU/BLK) Disconnect the power mirror control unit connector. Connect terminal 26 to terminal 3 and terminal 25 to terminal 2; left mirror should move up. Faulty actuator An open in the wire A short in the wire Left Power Mirror-Full Down Left power mirror moves down Power mirror control unit/26 (GRY/BLU), 25 (BLK), 3 (GRN/YEL), 2 (BLU/BLK) Disconnect the power mirror control unit connector. Connect terminal 26 to terminal 2 and terminal 25 to terminal 3; left mirror should move down. Faulty actuator An open in the wire A short in the wire Left Power Mirror-Full Right Left power mirror moves right Power mirror control unit/26 (GRY/BLU), 25 (BLK), 16 (BLU/WHT), 2 (BLU/BLK) Disconnect the power mirror control unit connector. Connect terminal 26 to terminal 16 and terminal 25 to terminal 2; left mirror should move right. Faulty actuator An open in the wire A short in the wire Left Power Mirror-Full Left Left power mirror moves left Power mirror control unit/26 (GRY/BLU), 25 (BLK), 16 (BLU/WHT), 2 (BLU/BLK) Disconnect the power mirror control unit connector. Connect terminal 26 to terminal 2 and terminal 25 to terminal 16; left mirror should move left. Faulty actuator An open in the wire A short in the wire Right Power Mirror-Full Up Right power mirror moves up Power mirror control unit/26 (GRY/BLU), 25 (BLK), 15 (GRN), 14 (RED/YEL) Disconnect the power mirror control unit connector. Connect terminal 26 to terminal 15 and terminal 25 to terminal 14; right mirror should move up. Faulty actuator An open in the wire A short in the wire Right Power Mirror-Full Down Right power mirror moves down Power mirror control unit/26 (GRY/BLU), 25 (BLK), 15 (GRN), 14 (RED/YEL) Disconnect the power mirror control unit connector. Connect terminal 26 to terminal 14 and terminal 25 to terminal 15; right mirror should move down. Faulty actuator An open in the wire A short in the wire Right Power Mirror-Full Right Right power mirror moves right Power mirror control unit/26 (GRY/BLU), 25 (BLK), 1 (WHT or BRN), 14 (RED/YEL) Disconnect the power mirror control unit connector. Connect terminal 26 to terminal 1 and terminal 25 to terminal 14; right mirror should move right. Faulty actuator An open in the wire A short in the wire Right Power Mirror-Full Left Right power mirror moves left Power mirror control unit/26 (GRY/BLU), 25 (BLK), 1 (WHT or BRN), 14 (RED/YEL) Disconnect the power mirror control unit connector. Connect terminal 26 to terminal 14 and terminal 25 to terminal 1; right mirror should move left. Faulty actuator An open in the wire A short in the wire Tilt Down Mirror select switch LEFT [RIGHT] : Left [RIGHT] mirror tilts down 5 degrees Power mirror control unit/26 (GRY/BLU), 25 (BLK), 2 (BLU/BLK) [14 (RED/YEL)], 3 (GRIM/YEL) [15 (GRIM)] Disconnect the power mirror control unit connector. Connect terminal 26 to terminal 2 [14] and terminal 25 to terminal 3 [15]; left [right] mirror should move down. Faulty actuator An open in the wire A short in the wire Tilt Up Mirror select switch LEFT [RIGHT] : Left [RIGHT] mirror tilts up 5 degrees Power mirror control unit/26 (GRY/BLU), 25 (BLK), 3 (GRIM/YEL) [15 (GRIM)], 2 (BLU/BLK) [14 (RED/YEL)] Disconnect the power mirror control unit connector. Connect terminal 26 to terminal 3 [15] and terminal 25 to terminal 2 [14]; left [right] mirror should move up. Faulty actuator An open in the wire A short in the wire

Power Seat Control Unit Input Test

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 12

1. Turn the ignition switch OFF.
2. Remove the driver's power seat (see «FRONT SEAT REMOVAL/INSTALLATION»(/acura/tl/iii-2003-2006/remont/seats/#seats__front-seat-removalinstallation) ). NOTE: Be careful not to scratch the interior trim.
3. Disconnect the connectors from the power seat control unit (A). NOTE: All connectors view are from wire side of female terminals.
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. With the power seat control unit still disconnected, make these input tests at the 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. SYSTEM INPUT TEST AND FUNCTION TEST Cavity Wire Test condition Test: Desired result Possible cause if result is not obtained A8 (1) BLU/BLK Under all conditions Check for continuity to ground: There should be continuity. Poor ground (G501, G503, G601) An open in the wire A20 B7 D1 BLK A9 YEL/GRN Ignition switch ON (II) Check for voltage to ground: There should be battery voltage. Blown No. 20 (7.5 A or 15 A) fuse in the under-dash fuse/relay box An open in the wire A10 GRY/BLU Under all conditions Check for voltage to ground: There should be battery voltage. Blown No. 15 (40 A) fuse in the under-hood fuse/relay box Blown No. 6 (7.5 A) fuse in the under-dash fuse/relay box An open in the wire B3 WHT/BLU Under all conditions Check for voltage to ground: There should be battery voltage. Blown No. 20 (40 A) fuse in the under-hood fuse/relay box Blown No. 14 (20 A) fuse in the under-dash fuse/relay box An open in the wire D4 WHT/RED Under all conditions Check for voltage to ground: There should be battery voltage. Blown No. 20 (40 A) fuse in the under-hood fuse/relay box Blown No. 16 (20 A) fuse in the under-dash fuse/relay box An open in the wire A14 PNK Under all conditions Check for continuity between the B4 terminal and under-dash fuse/relay box connector G (6P) No. 1 terminal: There should be continuity. An open in the wire Under-dash fuse/relay box connector G (6P) disconnected Check for continuity between the A14 terminal and body ground: There should be no continuity. A short to ground in the wire C4 PUR Under all conditions Check for continuity between the C4 terminal and power mirror control unit connector No. 23 terminal: There should be continuity end. An open in the wire Power mirror control unit connector (26P) disconnected Check for continuity between the C4 terminal and body ground: There should be no continuity. A short to ground in the wire (1) M/T model

Power Mirror Control Unit Input Test

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 13

1. Turn the ignition switch OFF.
2. Remove the dashboard lower cover (see «DRIVER'S DASHBOARD LOWER COVER REMOVAL/INSTALLATION»(/acura/tl/iii-2003-2006/remont/exteriorinterior-trim/#dashboard) ).
3. Disconnect the 26P 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. With the connector still disconnected, make these input tests at the connector. 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. SYSTEM INPUT TEST AND FUNCTION TEST Cavity Wire Test condition Test: Desired result Possible cause if result is not obtained 25 BLK Under all conditions Check for continuity to ground: There should be continuity. Poor ground (G501) An open in the wire 12 YEL/GRN Ignition switch ON (II) Check for voltage to ground: There should be battery voltage. Blown No. 20 (7.5 A or 15 A) fuse in the under-dash fuse/relay box An open in the wire 13 WHT/RED Under all conditions Check for voltage to ground: There should be battery voltage. Blown No. 7 (7.5 A) fuse in the under-dash fuse/relay box An open in the wire 26 GRY/BLU Under all conditions Check for voltage to ground: There should be battery voltage. Blown No. 6 (7.5 A) fuse in the under-dash fuse/relay box An open in the wire 23 PUR Under all conditions Check for continuity between the No. 23 terminal and power seat control unit connector C (12P) No. 4 terminal: There should be continuity. An open in the wire Power seat control unit connector (12P) disconnected Check for continuity between the No. 23 terminal and body ground: There should be no continuity. A short to ground in the wire

DTC Troubleshooting

DTC TROUBLESHOOTING INDEX

DTC B1802: Power Seat Control Unit Internal Error (EEPROM 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 ).

1. Clear the DTCs with the HDS.
2. Turn the ignition switch OFF, and then back ON (II).
3. Check for DTCs with the HDS. Is DTC B1802 indicated? YES - Replace the power seat control unit. NO - The system is OK at this time.

DTC B1805: Power Seat Control Unit Lost Communication with Gauge Control Module (VSP/NE signal)

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 OFF, and then back ON (II).
3. Check for DTCs with the HDS. Is DTC B1805 indicated? YES - Go to step 4 . NO - Check for poor connections. If OK, check battery condition and charging system.
4. Check for DTCs with the HDS. Are DTCs B1011, B1060, and B1706 indicated? YES - Go to step 7 . NO - Go to step 5 .
5. Turn the ignition switch OFF.
6. Do the «POWER SEAT CONTROL UNIT INPUT TEST»(/acura/tl/iii-2003-2006/remont/memory-modules/#driving-position-memory-systems-dpms__power-seat-control-unit-input-test) ). Is the input test OK? YES - Faulty power seat control unit. NO - Refer to the «POWER SEAT CONTROL UNIT INPUT TEST»(/acura/tl/iii-2003-2006/remont/memory-modules/#driving-position-memory-systems-dpms__power-seat-control-unit-input-test) and correct the cause.
7. Turn the ignition switch OFF.
8. Do the «GAUGE CONTROL MODULE INPUT TEST»(/acura/tl/iii-2003-2006/remont/communication-devices/#multiplex-intergrated-control-system) ). Is the input test OK? YES - Faulty gauge control module. NO - Refer to the gauge control module input test and correct the cause.

DTC B1806: Power Seat Control Unit Lost Communication with MICU (MICU Message)

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 OFF, and then back ON (II).
3. Check for DTCs with the HDS. Is DTC B1806 indicated? YES - Go to step 4 . NO - Check for poor connections. If OK, check battery condition and charging system.
4. Check for DTCs with the HDS. Are DTCs B1055, B1157 and B1255 indicated? YES - Go to step 7 . NO - Go to step 5 .
5. Turn the ignition switch OFF.
6. Do the «POWER SEAT CONTROL UNIT INPUT TEST»(/acura/tl/iii-2003-2006/remont/memory-modules/#driving-position-memory-systems-dpms__power-seat-control-unit-input-test) . Is the input test OK? YES - Faulty power seat control unit. NO - Refer to the «POWER SEAT CONTROL UNIT INPUT TEST»(/acura/tl/iii-2003-2006/remont/memory-modules/#driving-position-memory-systems-dpms__power-seat-control-unit-input-test) and correct the cause.
7. Turn the ignition switch OFF.
8. Do the «MICU INPUT TEST»(/acura/tl/iii-2003-2006/remont/communication-devices/#multiplex-intergrated-control-system__micu-input-test) . Is the input test OK? YES - Faulty multiplex integrated control unit. NO - Refer to the multiplex integrated control unit input test and correct the cause.

DTC B1807: Power Seat Control Unit Lost Communication with MICU (Door Switch Message)

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 OFF, and then back ON (II).
3. Check for DTCs with the HDS. Is DTC B1807 indicated? YES - Go to step 4 . NO - Check for poor connections. If OK, check battery condition and charging system.
4. Check for DTCs with the HDS. Are DTCs B1057 and B1159 indicated? YES - Go to step 7 . NO - Go to step 5 .
5. Turn the ignition switch OFF.
6. Do the «POWER SEAT CONTROL UNIT INPUT TEST»(/acura/tl/iii-2003-2006/remont/memory-modules/#driving-position-memory-systems-dpms__power-seat-control-unit-input-test) . Is the input test OK? YES - Faulty power seat control unit. NO - Refer to the «POWER SEAT CONTROL UNIT INPUT TEST»(/acura/tl/iii-2003-2006/remont/memory-modules/#driving-position-memory-systems-dpms__power-seat-control-unit-input-test) and correct the cause.
7. Turn the ignition switch OFF.
8. Do the «MICU INPUT TEST»(/acura/tl/iii-2003-2006/remont/communication-devices/#multiplex-intergrated-control-system__micu-input-test) . Is the input test OK? YES - Faulty multiplex integrated control unit. NO - Refer to the multiplex integrated control unit input test and correct the cause.

DTC B1808: Power Seat Control Unit Lost Communication with Gauge Control Module (A/T Message)

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 OFF, and then back ON (II).
3. Check for DTCs with the HDS. Is DTC B1808 indicated? YES - Go to step 4 . NO - Check for poor connections. If OK, check battery condition and charging system.
4. Check for DTCs with the HDS. Are DTCs B1008 and B1061 indicated? YES - Go to step 7 . NO - Go to step 5 .
5. Turn the ignition switch OFF.
6. Do the «POWER SEAT CONTROL UNIT INPUT TEST»(/acura/tl/iii-2003-2006/remont/memory-modules/#driving-position-memory-systems-dpms__power-seat-control-unit-input-test) . Is the input test OK? YES - Faulty power seat control unit. NO - Refer to the «POWER SEAT CONTROL UNIT INPUT TEST»(/acura/tl/iii-2003-2006/remont/memory-modules/#driving-position-memory-systems-dpms__power-seat-control-unit-input-test) and correct the cause.
7. Turn the ignition switch OFF.
8. Do the gauge control module input test (see «GAUGE CONTROL MODULE INPUT TEST»(/acura/tl/iii-2003-2006/remont/communication-devices/#multiplex-intergrated-control-system) ). Is the input test OK? YES - Faulty gauge control module. NO - Refer to the gauge control module input test and correct the cause.

DTC B1809: Power Seat Control Unit Lost Communication with Door Multiplex Control Unit (Memory Switch Message)

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 OFF, and then back ON (II).
3. Check for DTCs with the HDS. Is DTC B1809 indicated? YES - Go to step 4 . NO - Check for poor connections. If OK, check battery condition and charging system.
4. Check for DTCs with the HDS. Are DTCs B1006, B1058, and B1160 indicated? YES - Go to step 7 . NO - Go to step 5 .
5. Turn the ignition switch OFF.
6. Do the «POWER SEAT CONTROL UNIT INPUT TEST»(/acura/tl/iii-2003-2006/remont/memory-modules/#driving-position-memory-systems-dpms__power-seat-control-unit-input-test) . Is the input test OK? YES - Faulty power seat control unit. NO - Refer to the «POWER SEAT CONTROL UNIT INPUT TEST»(/acura/tl/iii-2003-2006/remont/memory-modules/#driving-position-memory-systems-dpms__power-seat-control-unit-input-test) and correct the cause.
7. Turn the ignition switch OFF.
8. Do the «DOOR MULTIPLEX CONTROL UNIT INPUT TEST»(/acura/tl/iii-2003-2006/remont/communication-devices/#multiplex-intergrated-control-system__door-multiplex-control-unit-input-test) . Is the input test OK? YES - Faulty door multiplex control unit. NO - Refer to the door multiplex control unit input test and correct the cause.

DTC B1825: Slide 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 ).

Scheme 14

Scheme 15

Scheme 16

Scheme 17

Scheme 18

Scheme 19

Scheme 20

Scheme 21

Scheme 22

1. Clear the DTC with the HDS.
2. Turn the ignition switch OFF, and then back ON (II).
3. Slide the power seat forward and backward with the power seat adjustment switch for more than 2 seconds, in each direction. Does the motor run continuously for more than 2 seconds? YES - Intermittent failure, the system is OK at this time. Check for a poor connection at the sensor and at the power seat control unit connector A (20P). NO - Go to step 4 .
4. Slide the power seat forward and backward with the power seat adjustment switch again. Does the motor run for about 1 second? YES - Go to step 5 . NO - Go to step 16 .
5. Turn the ignition switch OFF.
6. Remove the driver's power seat (see «FRONT SEAT REMOVAL/INSTALLATION»(/acura/tl/iii-2003-2006/remont/seats/#seats__front-seat-removalinstallation) ).
7. Disconnect the power seat control unit connector A (20P), slide position sensor connector (3P), and front up-down motor/position sensor connector (5P).
8. Check for continuity between the slide position sensor connector (3P) No. 1 terminal and power seat control unit connector A (20P) No. 2 terminal. Is there continuity? YES - Go to step 9 . NO - Repair open in the BLU wire.
9. Check for continuity between the slide position sensor connector (3P) No. 1 terminal and body ground. Is there continuity? YES - Repair a short in the BLU wire. NO - Go to step 10 .
10. Check for continuity between the slide position sensor connector (3P) No. 3 terminal and power seat control unit connector A (20P) No. 1 terminal. Is there continuity? YES - Go to step 11 . NO - Repair open in the BRN wire.
11. Check for continuity between the slide position sensor connector (3P) No. 3 terminal and body ground. Is there continuity? YES - Repair a short in the BRN wire. NO - Go to step 12 .
12. Check for continuity between the slide position sensor connector (3P) No. 2 terminal and power seat control unit connector A (20P) No. 11 terminal. Is there continuity? YES - Go to step 13 . NO - Repair open in the WHT/BLK wire.
13. Reconnect the power seat control unit connector A (20P).
14. Turn the ignition switch ON (II).
15. Measure voltage between the power seat control unit connector A (20P) No. 1 and No. 11 terminals. Is there about 5 V? YES - Replace the slide position motor/sensor. NO - Replace the power seat control unit.
16. Turn the ignition switch OFF.
17. Check the No. 14 (20 A) fuse in the under-dash fuse/relay box. Is the fuse OK? YES - Go to step 18 . NO - Replace the fuse and retest. If the fuse blows again, repair the short in the wire.
18. Disconnect the power seat control unit connector B (8P).
19. Measure the voltage between the No. 3 terminal of power seat control unit connector B (8P) and body ground. Is there battery voltage? YES - Go to step 20 . NO - Repair an open in the wire between the under-dash fuse/relay box and the power seat control unit.
20. Check for continuity between the No. 7 terminal of power seat control unit connector B (8P) and body ground. Is there continuity? YES - Go to step 21 . NO - Repair an open in the wire between the power seat control unit and G503, G601. If the wire is OK, repair G503, G601.
21. Disconnect the slide motor connector (2P).
22. Check for continuity between the following terminals of the power seat control unit connector B (8P) and the slide motor connector (2P). CONNECTOR SPECIFICATION 8P: 2P: No. 1 No. 2 No. 5 No. 1 Is there continuity? YES - Go to step 23 . NO - Repair an open in the wire between the power seat control unit connector B (8P) and the slide motor connector (2P).
23. Remove the driver's power seat (see «FRONT SEAT REMOVAL/INSTALLATION»(/acura/tl/iii-2003-2006/remont/seats/#seats__front-seat-removalinstallation) ).
24. Test the slide motor (see «DRIVER'S POWER SEAT MOTOR TEST»(/acura/tl/iii-2003-2006/remont/memory-modules/#driving-position-memory-systems-dpms) ). Is the slide motor OK? YES - Repair an open or a short in the slide motor wires. NO - Replace the slide motor. (see «'04 MODEL»(/acura/tl/iii-2003-2006/remont/seats/#seats__04-model) ) (see «'05-06 MODELS»(/acura/tl/iii-2003-2006/remont/seats/#seats) )

DTC B1826: Front Up-down 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 ).

Scheme 23

Scheme 24

Scheme 25

Scheme 26

Scheme 27

Scheme 28

Scheme 29

Scheme 30

Scheme 31

1. Clear the DTC with the HDS.
2. Turn the ignition switch OFF, and then back ON (II).
3. Move the front of the power seat up and down with the power seat adjustment switch for more than 2 seconds in each direction. Does the motor run continuously for more than 2 seconds? YES - Intermittent failure, the system is OK at this time. Check for a poor connection at the sensor and at the power seat control unit connector A (20P). NO - Go to step 4 .
4. Move the power seat up and down with the power seat adjustment switch again. Does the motor run for about 1 second? YES - Go to step 5 . NO - Go to step 16 .
5. Turn the ignition switch OFF.
6. Remove the driver's power seat (see «FRONT SEAT REMOVAL/INSTALLATION»(/acura/tl/iii-2003-2006/remont/seats/#seats__front-seat-removalinstallation) ).
7. Disconnect the power seat control unit connector A (20P), slide position sensor connector (3P), and front up-down motor/position sensor connector (5P).
8. Check for continuity between the front up-down motor/position sensor connector (5P) No. 5 terminal and power seat control unit connector A (20P) No. 12 terminal. Is there continuity? YES - Go to step 9 . NO - Repair open in the GRN/BLK wire.
9. Check for continuity between the front up-down motor/position sensor connector (5P) No. 5 terminal and body ground. Is there continuity? YES - Repair a short in the GRN/BLK wire. NO - Go to step 10 .
10. Check for continuity between the front up-down motor/position sensor connector (5P) No. 3 terminal and power seat control unit connector A (20P) No. 1 terminal. Is there continuity? YES - Go to step 11 . NO - Repair open in the BRN wire.
11. Check for continuity between the front up-down motor/position sensor connector (5P) No. 3 terminal and body ground. Is there continuity? YES - Repair a short in the BRN wire. NO - Go to step 12 .
12. Check for continuity between the front up-down motor/position sensor connector (5P) No. 4 terminal and power seat control unit connector A (20P) No. 11 terminal. Is there continuity? YES - Go to step 13 . NO - Repair open in the WHT/BLK wire.
13. Reconnect the power seat control unit connector A (20P).
14. Turn the ignition switch ON (II).
15. Measure voltage between the power seat control unit connector A (20P) No. 1 and No. 11 terminals. Is there about 5 V? YES - Replace the front up-down motor/position sensor. NO - Replace the power seat control unit.
16. Turn the ignition switch OFF.
17. Check the No. 14 (20 A) fuse in the under-dash fuse/relay box. Is the fuse OK? YES - Go to step 18 . NO - Replace the fuse and retest. If the fuse blows again, repair the short in the wire.
18. Disconnect the power seat control unit connector B (8P).
19. Measure the voltage between the No. 3 terminal of power seat control unit connector B (8P) and body ground. Is there battery voltage? YES - Go to step 20 . NO - Repair an open in the wire between the under-dash fuse/relay box and the power seat control unit.
20. Check for continuity between the No. 7 terminal of power seat control unit connector B (8P) and body ground. Is there continuity? YES - Go to step 21 . NO - Repair an open in the wire between the power seat control unit and G503, G601. If the wire is OK, repair G503, G601.
21. Disconnect the front up-down motor connector (5P).
22. Check for continuity between the following terminals of the power seat control unit connector B (8P) and the front up-down motor connector (5P). TERMINALS SPECIFICATION 8P: 5P: No. 4 No. 1 No. 8 No. 2 Is there continuity? YES - Go to step 23 . NO - Repair an open in the wire between the power seat control unit connector B (8P) and the front up-down motor connector (5P).
23. Remove the driver's power seat (see «FRONT SEAT REMOVAL/INSTALLATION»(/acura/tl/iii-2003-2006/remont/seats/#seats__front-seat-removalinstallation) ).
24. Test the front up-down motor (see «DRIVER'S POWER SEAT MOTOR TEST»(/acura/tl/iii-2003-2006/remont/memory-modules/#driving-position-memory-systems-dpms) ). Is the front up-down motor OK? YES - Repair an open or a short in the front up-down motor/position sensor wires. NO - Replace the front up-down motor/position sensor. (see «'04 MODEL»(/acura/tl/iii-2003-2006/remont/seats/#seats__04-model) ) (see «'05-06 MODELS»(/acura/tl/iii-2003-2006/remont/seats/#seats) )

DTC B1827: Rear Up-Down 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 ).

Scheme 32

Scheme 33

Scheme 34

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Scheme 36

Scheme 37

Scheme 38

Scheme 39

Scheme 40

1. Clear the DTC with the HDS.
2. Turn the ignition switch OFF, and then back ON (II).
3. Move the power seat up and down with the power seat adjustment switch for more than 2 seconds in each direction. Does the motor run continuously for more than 2 seconds? YES - Intermittent failure, the system is OK at this time. Check for a poor connection at the sensor and at the power seat control unit connector A (20P). NO - Go to step 4 .
4. Move the power seat up and down with the power seat adjustment switch again. Does the motor run for about 1 second? YES - Go to step 5 . NO - Go to step 16 .
5. Turn the ignition switch OFF.
6. Remove the driver's power seat (see «FRONT SEAT REMOVAL/INSTALLATION»(/acura/tl/iii-2003-2006/remont/seats/#seats__front-seat-removalinstallation) ).
7. Disconnect the power seat control unit connector C (12P), recline motor/position sensor connector (5P), and rear up-down motor/position sensor connector (5P).
8. Check for continuity between the rear up-down motor/position sensor connector (5P) No. 5 terminal and power seat control unit connector C (12P) No. 11 terminal. Is there continuity? YES - Go to step 9 . NO - Repair open in the RED/BLK wire.
9. Check for continuity between the rear up-down motor/position sensor connector (5P) No. 5 terminal and body ground. Is there continuity? YES - Repair a short in the RED/BLK wire. NO - Go to step 10 .
10. Check for continuity between the rear up-down motor/position sensor connector (5P) No. 3 terminal and power seat control unit connector C (12P) No. 6 terminal. Is there continuity? YES - Go to step 11 . NO - Repair open in the BRN/WHT wire.
11. Check for continuity between the rear up-down motor/position sensor connector (5P) No. 3 terminal and body ground. Is there continuity? YES - Repair a short in the BRN/WHT wire. NO - Go to step 12 .
12. Check for continuity between the rear up-down motor/position sensor connector (5P) No. 4 terminal and power seat control unit connector C (12P) No. 12 terminal. Is there continuity? YES - Go to step 13 . NO - Repair open in the BRN/BLK wire.
13. Reconnect the power seat control unit connector C (12P).
14. Turn the ignition switch ON (II).
15. Measure voltage between the power seat control unit connector C (12P) No. 6 and No. 12 terminals. Is there about 5 V? YES - Replace the rear up-down motor/position sensor. NO - Replace the power seat control unit.
16. Turn the ignition switch OFF.
17. Check the No. 16 (20 A) fuse in the under-dash fuse/ relay box. Is the fuse OK? YES - Go to step 18 . NO - Replace the fuse and retest. If the fuse blows again, repair the short in the wire.
18. Disconnect the power seat control unit connector D (6P).
19. Measure the voltage between the No. 4 terminal of power seat control unit connector D (6P) and body ground. Is there battery voltage? YES - Go to step 20 . NO - Repair an open in the wire between the under-dash fuse/relay box and the power seat control unit.
20. Check for continuity between the No. 1 terminal of power seat control unit connector D (6P) and body ground. Is there continuity? YES - Go to step 21 . NO - Repair an open in the wire between the power seat control unit and G503, G601. If the wire is OK, repair G503, G601.
21. Disconnect the rear up-down motor connector (5P).
22. Check for continuity between the following terminals of the power seat control unit connector D (6P) and the rear up-down motor connector (5P). TERMINALS SPECIFICATION 6P: 5P: No. 2 No. 2 No. 5 No. 1 Is there continuity? YES- Go to step 23. NO- Repair an open in the wire between the power seat control unit connector D (6P) and the rear up-down motor connector (5P).
23. Remove the driver's power seat (see «FRONT SEAT REMOVAL/INSTALLATION»(/acura/tl/iii-2003-2006/remont/seats/#seats__front-seat-removalinstallation) ).
24. Test the rear up-down motor (see «DRIVER'S POWER SEAT MOTOR TEST»(/acura/tl/iii-2003-2006/remont/memory-modules/#driving-position-memory-systems-dpms) ). Is the rear up-down motor OK? YES - Repair an open or a short in the rear up-down motor/position sensor wires. NO - Replace the rear up-down motor/position sensor. (see «'04 MODEL»(/acura/tl/iii-2003-2006/remont/seats/#seats__04-model) ) (see «'05-06 MODELS»(/acura/tl/iii-2003-2006/remont/seats/#seats) )

DTC B1828: 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 ).

Scheme 41

Scheme 42

Scheme 43

Scheme 44

Scheme 45

Scheme 46

Scheme 47

Scheme 48

Scheme 49

1. Clear the DTC with the HDS.
2. Turn the ignition switch OFF, and then back ON (II).
3. Move the power seat up and down with the power seat adjustment switch for more than 2 seconds in each direction. Does the motor run continuously for more than 2 seconds? YES - Intermittent failure, the system is OK at this time. Check for a poor connection at the sensor and at the power seat control unit connector A (20P). NO - Go to step 4 .
4. Recline the power seat forward and backward with the power seat adjustment switch again. Does the motor run for about 1 second? YES - Go to step 5 . NO - Go to step 16 .
5. Turn the ignition switch OFF.
6. Remove the driver's power seat (see «FRONT SEAT REMOVAL/INSTALLATION»(/acura/tl/iii-2003-2006/remont/seats/#seats__front-seat-removalinstallation) ).
7. Disconnect the power seat control unit connector C (12P), recline motor/position sensor connector (5P), and rear up-down motor/position sensor connector (5P).
8. Check for continuity between the recline motor/position sensor connector (5P) No. 5 terminal and power seat control unit connector C (12P) No. 5 terminal. Is there continuity? YES - Go to step 9 . NO - Repair open in the YEL/BLK wire.
9. Check for continuity between the recline motor/position sensor connector (5P) No. 5 terminal and body ground. Is there continuity? YES - Repair a short in the YEL/BLK wire. NO - Go to step 10 .
10. Check for continuity between the recline motor/ position sensor connector (5P) No. 3 terminal and power seat control unit connector C (12P) No. 6 terminal. Is there continuity? YES - Go to step 11 . NO - Repair open in the BRN/WHT wire.
11. Check for continuity between the recline motor/ position sensor connector (5P) No. 3 terminal and body ground. Is there continuity? YES - Repair a short in the BRN/WHT wire. NO - Go to step 12 .
12. Check for continuity between the recline motor/ position sensor connector (5P) No. 4 terminal and power seat control unit connector C (12P) No. 12 terminal. Is there continuity? YES - Go to step 13 . NO - Repair open in the BRN/BLK wire.
13. Reconnect the power seat control unit connector C (12P).
14. Turn the ignition switch ON (II).
15. Measure voltage between the power seat control unit connector C (12P) No. 6 and No. 12 terminals. Is there about 5 V? YES - Replace the recline motor/position sensor. NO - Replace the power seat control unit.
16. Turn the ignition switch OFF.
17. Check the No. 16 (20 A) fuse in the under-dash fuse/ relay box. Is the fuse OK? YES - Go to step 18 . NO - Replace the fuse and retest. If the fuse blows again, repair the short in the wire.
18. Disconnect the power seat control unit connector D (6P).
19. Measure the voltage between the No. 4 terminal of power seat control unit connector D (6P) and body ground. Is there battery voltage? YES - Go to step 20 . NO - Repair an open in the wire between the under-dash fuse/relay box and the power seat control unit.
20. Check for continuity between the No. 1 terminal of power seat control unit connector D (6P) and body ground. Is there continuity? YES - Go to step 21 . NO - Repair an open in the wire between the power seat control unit and G503, G601. If the wire is OK, repair G503, G601.
21. Disconnect the recline motor connector (5P).
22. Check for continuity between the following terminals of the power seat control unit connector D (6P) and the recline motor connector (5P). TERMINALS SPECIFICATION 6P: 5P: No. 3 No. 1 No. 6 No. 2 Is there continuity? YES - Go to step 23 . NO - Repair an open in the wire between the power seat control unit connector D (6P) and the recline motor connector (5P).
23. Remove the driver's power seat (see «FRONT SEAT REMOVAL/INSTALLATION»(/acura/tl/iii-2003-2006/remont/seats/#seats__front-seat-removalinstallation) ).
24. Test the recline motor (see «DRIVER'S POWER SEAT MOTOR TEST»(/acura/tl/iii-2003-2006/remont/memory-modules/#driving-position-memory-systems-dpms) ). Is the recline motor OK? YES - Repair an open or a short in the recline motor/position sensor wires. NO - Replace the recline motor/position sensor. (see «'04 MODEL»(/acura/tl/iii-2003-2006/remont/seats/#seats__04-model) ) (see «'05-06 MODELS»(/acura/tl/iii-2003-2006/remont/seats/#seats) )

DTC B1829: A/T P Signal and VSS 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. Turn the ignition switch OFF.
2. Remove the No. 6 (7.5 A) fuse from the under-dash fuse/relay box, then reinstall the fuse.
3. Turn the ignition switch ON (II).
4. Operate the power seat with the driving position memory switch.
5. Check for DTCs with the HDS. Is DTC B1829 indicated? YES - Go to step 6 . NO - Intermittent failure, the system is OK at this time.
6. Check for power seat/power mirror DTCs with the HDS. Are there any DTCs? YES - Go to indicated DTCs troubleshooting. NO - Go to step 7 .
7. Check for ECM/PCM DTCs (see «GENERAL TROUBLESHOOTING INFORMATION»(/acura/tl/iii-2003-2006/remont/auxiliary-emission-control-systems/#fuel-and-emissions-systems) ). Is any DTC indicated? YES - Go to ECM/PCM indicated DTCs troubleshooting. NO - Substitute a known-good power seat control unit and reset. If the symptom DTC is still preset; replace the gauge control module.

DTC B1830: Right Mirror Horizontal Sensor 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 50

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Scheme 59

1. Clear the DTC with the HDS.
2. Turn the ignition switch OFF, and then back ON (II).
3. Operate the right power mirror swings right or left 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.
5. Turn the ignition switch OFF.
6. Remove the driver's dashboard lower cover (see «DRIVER'S DASHBOARD LOWER COVER REMOVAL/INSTALLATION»(/acura/tl/iii-2003-2006/remont/exteriorinterior-trim/#dashboard) ).
7. Remove the driver's and front passenger's door panels (see «FRONT DOOR PANEL REMOVAL/INSTALLATION»(/acura/tl/iii-2003-2006/remont/windows/#door-system__front-door-panel-removalinstallation) ).
8. Disconnect the power mirror control unit 26P connector.
9. Disconnect the left and right power mirror 13P connectors.
10. Check for continuity between the right power mirror connector (13P) No. 9 terminal and body ground. Is there continuity? YES - Repair a short in the RED/WHT wire. NO - Go to step 11 .
11. Connect the power mirror control unit connector (26P) No. 8 terminal to body ground with a jumper wire.
12. Check for continuity between the right power mirror connector (13P) No. 9 terminal and body ground. Is there continuity? YES - Go to step 13 . NO - Repair an open in the RED/WHT wire.
13. Check for continuity between the right power mirror connector (13P) No. 7 terminal and body ground. Is there continuity? YES - Repair a short in the GRY/RED wire. NO - Go to step 14 .
14. Connect the power mirror control unit connector (26P) No. 18 terminal to body ground with a jumper wire.
15. Check for continuity between the right power mirror connector (13P) No. 7 terminal and body ground. Is there continuity? YES - Go to step 16 . NO - Repair an open in the GRY/RED wire.
16. Check for continuity between the power mirror control unit connector (26P) No. 7 terminal and body ground. Is there continuity? YES - Repair a short in the LT GRN/RED wire. NO - Go to step 17 .
17. Connect the power mirror control unit connector (26P) No. 7 terminal to body ground with a jumper wire.
18. Check for continuity between the right power mirror connector (13P) No. 6 terminal and body ground. Is there continuity? YES - Go to step 19 . NO - Repair an open in the LT GRN/RED wire.
19. Reconnect the power mirror control unit connector (26P).
20. Turn the ignition switch ON (II).
21. Measure voltage between the power mirror control unit connector (26P) No. 8 and No. 7 terminals. Is there about 5 V? YES - Faulty right power mirror position sensor; replace the power mirror actuator (see «POWER MIRROR ACTUATOR REPLACEMENT»(/acura/tl/iii-2003-2006/remont/mirrors/#power-mirrors) ). NO - Substitute a known-good power mirror control unit, and recheck. If DTC is gone, the original power mirror control unit is faulty; replace it.

DTC B1831: Right Mirror Vertical Sensor 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 60

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1. Clear the DTC with the HDS.
2. Turn the ignition switch OFF, and then back ON (II).
3. Operate the right power mirror tilts up or down with the power mirror switch.
4. Check for DTCs with the HDS. ls DTC B1831 indicated? YES - Go to step 5 . NO - Intermittent failure, the system is OK at this time.
5. Turn the ignition switch OFF.
6. Remove the driver's dashboard lower cover (see «DRIVER'S DASHBOARD LOWER COVER REMOVAL/INSTALLATION»(/acura/tl/iii-2003-2006/remont/exteriorinterior-trim/#dashboard) ).
7. Remove the driver's and front passenger's door panels (see «FRONT DOOR PANEL REMOVAL/INSTALLATION»(/acura/tl/iii-2003-2006/remont/windows/#door-system__front-door-panel-removalinstallation) ).
8. Disconnect the power mirror control unit 26P connector.
9. Disconnect the left and right power mirror 13P connectors.
10. Check for continuity between the right power mirror connector (13P) No. 9 terminal and body ground. Is there continuity? YES - Repair a short in the RED/WHT wire. NO - Go to step 11 .
11. Connect the power mirror control unit connector (26P) No. 8 terminal to body ground with a jumper wire.
12. Check for continuity between the right power mirror connector (13P) No. 9 terminal and body ground. Is there continuity? YES - Go to step 13 . NO - Repair an open in the RED/WHT wire.
13. Check for continuity between the right power mirror connector (13P) No. 8 terminal and body ground. Is there continuity? YES - Repair a short in the LT BLU wire. NO - Go to step 14 .
14. Connect the power mirror control unit connector (26P) No. 17 terminal to body ground with a jumper wire.
15. Check for continuity between the right power mirror connector (13P) No. 8 terminal and body ground. Is there continuity? YES - Go to step 16 . NO - Repair an open in the LT BLU wire.
16. Check for continuity between the power mirror control unit connector (26P) No. 7 terminal and body ground. Is there continuity? YES - Repair a short in the LT GRN/RED wire. NO - Go to step 17 .
17. Connect the power mirror control unit connector (26P) No. 7 terminal to body ground with a jumper wire.
18. Check for continuity between the right power mirror connector (13P) No. 6 terminal and body ground. Is there continuity? YES - Go to step 19 . NO - Repair an open in the LT GRN/RED wire.
19. Reconnect the power mirror control unit connector (26P).
20. Turn the ignition switch ON (II).
21. Measure voltage between the power mirror control unit connector (26P) No. 8 and No. 7 terminals. Is there about 5 V? YES - Faulty right power mirror position sensor; replace the power mirror actuator (see «POWER MIRROR ACTUATOR REPLACEMENT»(/acura/tl/iii-2003-2006/remont/mirrors/#power-mirrors) ). NO - Substitute a known-good power mirror control unit, and recheck. If DTC is gone, the original power mirror control unit is faulty; replace it.

DTC B1832: Left Mirror Horizontal Sensor 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 70

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1. Clear the DTC with the HDS.
2. Turn the ignition switch OFF, and then back ON (II).
3. Operate the left power mirror swings right or left 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.
5. Turn the ignition switch OFF.
6. Remove the driver's dashboard lower cover (see «DRIVER'S DASHBOARD LOWER COVER REMOVAL/INSTALLATION»(/acura/tl/iii-2003-2006/remont/exteriorinterior-trim/#dashboard) ).
7. Remove the driver's and front passenger's door panels (see «FRONT DOOR PANEL REMOVAL/INSTALLATION»(/acura/tl/iii-2003-2006/remont/windows/#door-system__front-door-panel-removalinstallation) ).
8. Disconnect the power mirror control unit 26P connector.
9. Disconnect the left and right power mirror 13P connectors.
10. Check for continuity between the left power mirror connector (13P) No. 9 terminal and body ground. Is there continuity? YES - Repair a short in the RED/WHT wire. NO - Go to step 11 .
11. Connect the power mirror control unit connector (26P) No. 8 terminal to body ground with a jumper wire.
12. Check for continuity between the left power mirror connector (13P) No. 9 terminal and body ground. Is there continuity? YES - Go to step 13 . NO - Repair an open in the RED/WHT wire.
13. Check for continuity between the left power mirror connector (13P) No. 8 terminal and body ground. Is there continuity? YES - Repair a short in the WHT/BLK wire. NO - Go to step 14 .
14. Connect the power mirror control unit connector (26P) No. 4 terminal to body ground with a jumper wire.
15. Check for continuity between the left power mirror connector (13P) No. 8 terminal and body ground. Is there continuity? YES - Go to step 16 . NO - Repair an open in the WHT/BLK wire.
16. Check for continuity between the power mirror control unit connector (26P) No. 7 terminal and body ground. Is there continuity? YES - Repair a short in the LT GRN/RED wire. NO - Go to step 17 .
17. Connect the power mirror control unit connector (26P) No. 7 terminal to body ground with a jumper wire.
18. Check for continuity between the left power mirror connector (13P) No. 6 terminal and body ground. Is there continuity? YES - Go to step 19 . NO - Repair an open in the LT GRN/RED wire.
19. Reconnect the power mirror control unit connector (26P).
20. Turn the ignition switch ON (II).
21. Measure voltage between the power mirror control unit connector (26P) No. 8 and No. 7 terminals. Is there about 5 V? YES - Faulty left power mirror position sensor; replace the power mirror actuator (see «POWER MIRROR ACTUATOR REPLACEMENT»(/acura/tl/iii-2003-2006/remont/mirrors/#power-mirrors) ). NO - Substitute a known-good power mirror control unit, and recheck. If DTC is gone, the original power mirror control unit is faulty; replace it.

DTC B1833: Left Mirror Vertical Sensor 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 ).

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1. Clear the DTC with the HDS.
2. Turn the ignition switch OFF, and then back ON (II).
3. Operate the left power mirror tilts up or down with the power mirror switch.
4. Check for DTCs with the HDS. Is DTC B1833 indicated? YES - Go to step 5 . NO - Intermittent failure, the system is OK at this time.
5. Turn the ignition switch OFF.
6. Remove the driver's dashboard lower cover (see «DRIVER'S DASHBOARD LOWER COVER REMOVAL/INSTAL»(/acura/tl/iii-2003-2006/remont/exteriorinterior-trim/#dashboard) ).
7. Remove the driver's and front passenger's door panels (see «FRONT DOOR PANEL REMOVAL/INSTALLATION»(/acura/tl/iii-2003-2006/remont/windows/#door-system__front-door-panel-removalinstallation) ).
8. Disconnect the power mirror control unit 26P connector.
9. Disconnect the left and right power mirror 13P connectors.
10. Check for continuity between the left power mirror connector (13P) No. 9 terminal and body ground. Is there continuity? YES - Repair a short in the RED/WHT wire. NO - Go to step 11 .
11. Connect the power mirror control unit connector (26P) No. 8 terminal to body ground with a jumper wire.
12. Check for continuity between the left power mirror connector (13P) No. 9 terminal and body ground. Is there continuity? YES - Go to step 13 . NO - Repair an open in the RED/WHT wire.
13. Check for continuity between the left power mirror connector (13P) No. 7 terminal and body ground. Is there continuity? YES - Repair a short in the GRY wire. NO - Go to step 14 .
14. Connect the power mirror control unit connector (26P) No. 5 terminal to body ground with a jumper wire.
15. Check for continuity between the left power mirror connector (13P) No. 7 terminal and body ground. Is there continuity? YES - Go to step 16 . NO - Repair an open in the GRY wire.
16. Check for continuity between the power mirror control unit connector (26P) No. 7 terminal and body ground. Is there continuity? YES - Repair a short in the LT GRN/RED wire. NO - Go to step 17 .
17. Connect the power mirror control unit connector (26P) No. 7 terminal to body ground with a jumper wire.
18. Check for continuity between the left power mirror connector (13P) No. 6 terminal and body ground. Is there continuity? YES - Go to step 19 . NO - Repair an open in the LT GRN/RED wire.
19. Reconnect the power mirror control unit connector (26P).
20. Turn the ignition switch ON (II).
21. Measure voltage between the power mirror control unit connector (26P) No. 8 and No. 7 terminals. Is there about 5 V? YES - Faulty left power mirror position sensor; replace the power mirror actuator (see «POWER MIRROR ACTUATOR REPLACEMENT»(/acura/tl/iii-2003-2006/remont/mirrors/#power-mirrors) ). NO - Substitute a known-good power mirror control unit, and recheck. If DTC is gone, the original power mirror control unit is faulty; replace it.

DTC B1834: M/T Harness Poor Ground

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 90

1. Clear the DTC with the HDS.
2. Turn the ignition switch OFF, and then back ON (II).
3. Operate the power seat with the power seat adjustment switch.
4. Check for DTCs with the HDS. Is DTC 1834 indicated? YES - Go to step 5 . NO - Intermittent failure, the system is OK at this time.
5. Check for voltage between the power seat control unit connector A (20P) No. 8 terminal and body ground. Is there 1 V or less? YES - Check for poor connection between the power seat control unit connector A (20P) and G503, G601. If the wire and ground are OK, replace the power seat control unit (see «POWER SEAT CONTROL UNIT INPUT TEST»(/acura/tl/iii-2003-2006/remont/memory-modules/#driving-position-memory-systems-dpms__power-seat-control-unit-input-test) ). NO - Check for the poor ground (G503, G601) or repair an open in the wire.

DTC B1837: Power Seat Position Memory Recall 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 ).

1. Clear the DTC with the HDS.
2. Turn the ignition switch OFF, and then back ON (II).
3. Operate the power seat with the power seat adjustment switch.
4. Operate the power seat with the driving position memory switch.
5. Check for DTCs with the HDS. Is DTC 1837 indicated? YES - Go to step 6 . NO - Intermittent failure, the system is OK at this time.
6. Check for other DTCs. Is any other DTC indicated? YES - Go to the indicated DTCs troubleshooting. NO - Go to step 7 .
7. Remove the driver's power seat (see «FRONT SEAT REMOVAL/INSTALLATION»(/acura/tl/iii-2003-2006/remont/seats/#seats__front-seat-removalinstallation) ).
8. Test the power seat motors (see «DRIVER'S POWER SEAT MOTOR TEST»(/acura/tl/iii-2003-2006/remont/memory-modules/#driving-position-memory-systems-dpms) ). Are the power seat motors OK? YES - Replace the power seat control unit. NO - Replace the faulty power seat motor(s).

DTC B1843: Power Seat Control Unit Lost Communication With Other Units (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 ).

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1. Clear the DTC with the HDS.
2. Turn the ignition switch OFF, and then back ON (II).
3. Operate the power seat with the driving position memory switch.
4. Check for DTCs with the HDS. Is DTC 1843 indicated? YES - Go to step 5 . NO - Intermittent failure, the system is OK at this time.
5. Turn the ignition switch OFF.
6. Disconnect the power seat control unit connectors and power mirror control unit connector (26P).
7. Check for continuity between the power seat control unit connector C (12P) No. 4 terminal and power mirror control unit connector (26P) No. 23 terminal. Is there continuity? YES - Go to step 8 . NO - Repair an open in the PUR wire between the power mirror control unit connector (26P) and the power seat control unit connector C (12P).
8. Check for continuity between the power seat control unit connector C (12P) No. 4 terminal and body ground with the ignition switch ON (II). Is there continuity? YES - Repair a short in the PUR wire to ground. NO - Go to step 9 .
9. Measure the voltage between the No. 13 terminal of the power mirror control unit connector (26P) and body ground. Is there battery voltage? YES - Go to step 10 . NO - Check No. 7 (7.5 A) fuse in the under-dash fuse/relay box. If the fuse is OK, repair an open in the WHT/RED wire.
10. Check for continuity between the No. 25 terminal of power mirror control unit connector (26P) and body ground. Is there continuity? YES - Repair an open in the wire between the power mirror control unit and G501. If the wire is OK, repair G501. NO - Replace the power mirror control unit.

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1. Remove the driver's seat (see «FRONT SEAT REMOVAL/INSTALLATION»(/acura/tl/iii-2003-2006/remont/seats/#seats__front-seat-removalinstallation) ).
2. Disconnect the connector from each power seat motor. NOTE: 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.
4. If the motor does not run or fails to run smoothly, replace: Slide motor (see «'04 MODEL»(/acura/tl/iii-2003-2006/remont/seats/#seats__04-model) ) (see «'05-06 MODELS»(/acura/tl/iii-2003-2006/remont/seats/#seats) ) Recline motor (see «FRONT SEAT RECLINE MOTOR REPLACEMENT»(/acura/tl/iii-2003-2006/remont/seats/#seats) ) Front up-down motor (see «'04 MODEL»(/acura/tl/iii-2003-2006/remont/seats/#seats__04-model) ) (see «'05-06 MODELS»(/acura/tl/iii-2003-2006/remont/seats/#seats) ) Rear up-down motor (see «'04 MODEL»(/acura/tl/iii-2003-2006/remont/seats/#seats__04-model) ) (see «'05-06 MODELS»(/acura/tl/iii-2003-2006/remont/seats/#seats) )

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Scheme 101

1. Remove the driver's door panel (see «FRONT DOOR PANEL REMOVAL/INSTALLATION»(/acura/tl/iii-2003-2006/remont/windows/#door-system__front-door-panel-removalinstallation) ).
2. Disconnect the 10P connector from the memory switch (A).
3. Check for continuity between the terminals in each switch position according to the table.
4. If the continuity check is not as specified, replace the bulbs (B), or remove the screws and replace the switch.

Scheme 102

Scheme 103

1. Remove the power seat adjustment switch knobs (A) and recline cover from the driver's power seat (see «FRONT SEAT DISASSEMBLY/REASSEMBLY -- 10-WAY POWER»(/acura/tl/iii-2003-2006/remont/seats/#seats__front-seat-disassemblyreassembly-10-way-power) ), then remove the two screws and the power seat switch.
2. Disconnect the 12P connector from the power seat adjustment switch (B).
3. Reinstall the adjustment switch knobs to the switch.
4. Check for continuity between the terminals in each switch position according to the table.
5. If the continuity is not as specified, replace the switch.

See also:
• SYSTEM DESCRIPTION
• SYSTEM DESCRIPTION
• TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A
• MICU INPUT TEST
• TRANSMISSION RANGE SWITCH TEST
• FRONT SEAT REMOVAL/INSTALLATION
• DRIVER'S DASHBOARD LOWER COVER REMOVAL/INSTALLATION
• DOOR MULTIPLEX CONTROL UNIT INPUT TEST
• '04 MODEL
• '05-06 MODELS
• GENERAL TROUBLESHOOTING INFORMATION
• FRONT DOOR PANEL REMOVAL/INSTALLATION
• POWER MIRROR ACTUATOR REPLACEMENT
• FRONT SEAT DISASSEMBLY/REASSEMBLY -- 10-WAY POWER
• SYSTEM INPUT TEST AND FUNCTION TEST
• SWITCH TEST/REPLACEMENT
• DTC B1802
• DTC B1805
• DTC B1806
• DTC B1807
• DTC B1808
• DTC B1809
• DTC B1825
• DTC B1826
• DTC B1827
• DTC B1828
• DTC B1829
• DTC B1830
• DTC B1831
• DTC B1832
• DTC B1833
• DTC B1834
• DTC B1837
• DTC B1843
• POWER SEAT CONTROL UNIT INPUT TEST