( TL19E00J00020446151FCAT00 )

Power Seat Control Unit Input Test

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

1. Remove the driver's seat.
   NOTE: Be careful not to scratch the interior trim.

1. Disconnect the 40P connector (A) and 18P connector (B) from the power seat control unit (C).

1. 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 .

1. With the connectors 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, go to Step 6 .

   Cavity | Wire | Test condition | Test: Desired result | Possible cause if desired result is not obtained
   --- | --- | --- | --- | ---

   A34

   BLK/YEL

   Ignition switch ON (II)

   Measure the voltage to ground: There should be battery voltage.

   - Blown No. 2 (7.5 A) fuse in the driver's under-dash fuse/relay box
   - An open in the wire

   A36

   BLU

   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 in the wire

   B1

   WHT

   Under all conditions

   Measure the voltage to ground: There should be battery voltage.

   - Blown No. 3−4 (DR F/B) (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 in the wire

   B8

   PUR

   Under all conditions

   Measure the voltage to ground: There should be battery voltage.

   - Blown No. 3−4 (DR F/B) (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 in the wire

   A9

   BLK/GRN

   Under all conditions

   Check for continuity to ground: There should be continuity.

   - Poor ground (G701)
   - An open in the wire

   B4

   BLK/YEL

   Under all conditions

   Check for continuity to ground: There should be continuity.

   - Poor ground (G701)
   - An open in the wire

   B18 | BLK/WHT
   A39 | BLK | Under all conditions (disconnect the power window master switch 37P connector) | Check for continuity between the A39 terminal and power window master switch 37P connector No. 33 terminal: There should be continuity. | An open in the wire
   Under all conditions (disconnect the immobilizer-keyless control unit 7P connector) | Check for continuity between the A39 terminal and immobilizer-keyless control unit 7P connector No. 3 terminal: There should be continuity. | An open in the wire
   A40 | YEL | Under all conditions (disconnect the power window master switch 37P connector) | Check for continuity between the A40 terminal and power window master switch 37P connector No. 35 terminal: There should be continuity. | An open in the wire
   Under all conditions (disconnect the immobilizer-keyless control unit 7P connector) | Check for continuity between the A40 terminal and immobilizer-keyless control unit 7P connector No. 4 terminal: There should be continuity. | An open in the wire

   A1·A7

   BRN/BLK·RED/WHT

   Slide switch in FORWARD position

   Check for continuity between the terminals: There should be continuity.

   - Faulty power seat adjustment switch
   - An open in the wire

   A1·A24

   BRN/BLK·ORN

   Slide switch in BACKWARD position

   Check for continuity between the terminals: There should be continuity.

   - Faulty power seat adjustment switch
   - An open in the wire

   A1·A6

   BRN/BLK·PNK

   Recline switch in FORWARD position

   Check for continuity between the terminals: There should be continuity.

   - Faulty power seat adjustment switch
   - An open in the wire

   A1·A23

   BRN/BLK·PUR

   Recline switch in BACKWARD position

   Check for continuity between the terminals: There should be continuity.

   - Faulty power seat adjustment switch
   - An open in the wire

   A1·A5

   BRN/BLK·LT GRN

   Front up-down switch in UP position

   Check for continuity between the terminals: There should be continuity.

   - Faulty power seat adjustment switch
   - An open in the wire

   A1·A4

   BRN/BLK·RED/BLK

   Front up-down switch in DOWN position

   Check for continuity between the terminals: There should be continuity.

   - Faulty power seat adjustment switch
   - An open in the wire

   A1·A22

   BRN/BLK·GRN/ORN

   Rear up-down switch in UP position

   Check for continuity between the terminals: There should be continuity.

   - Faulty power seat adjustment switch
   - An open in the wire

   A1·A3

   BRN/BLK·GRY

   Rear up-down switch in DOWN position

   Check for continuity between the terminals: There should be continuity.

   - Faulty power seat adjustment switch
   - An open in the wire

   B7·B17

   LT GRN·YEL

   Under all conditions

   Connect B1 and B7 terminals, and B17 and B4 terminals: The seat should slide backward.

   - Faulty slide motor
   - An open in the wire

   Connect B1 and B7 terminals, and B7 and B4 terminals: The seat should slide forward.

   B9·B11

   RED·GRY

   Under all conditions

   Connect B1 and B9 terminals, and B11 and B4 terminals: The seat should recline forward.

   - Faulty recline motor
   - An open in the wire

   Connect B1 and B11 terminals, and B9 and B4 terminals: The seat should recline backward.

   B6·B16

   BRN/WHT·ORN

   Under all conditions

   Connect B1 and B6 terminals, and B16 and B4 terminals: The front of seat should move down.

   - Faulty front up-down motor
   - An open in the wire

   Connect B1 and B16 terminals, and B6 and B4 terminals: The front of seat should move up.

   B2·B10

   ORN·BLU

   Under all conditions

   Connect B1 and B2 terminals, and B10 and B4 terminals: The rear of seat should move up.

   - Faulty rear up-down motor
   - An open in the wire

   Connect B1 and B10 terminals, and B2 and B4 terminals: The rear of seat should move down.

1. Reconnect the connectors to the power seat control unit, and 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.

   Cavity | Wire | Test condition | Test: Desired result | Possible cause if desired result is not obtained
   --- | --- | --- | --- | ---

   A26 (A/T)

   BLU/BLK

   Shift lever in P position

   Measure the voltage to ground: There should be less than 1 V.

   - Poor ground (G101)
   - Faulty transmission range switch
   - An open in the wire

   Shift lever in any other position than P

   Measure the voltage to ground: There should be 5 V or more.

   - Faulty transmission range switch
   - A short to ground in the wire

   A15

   WHT/BLK

   Ignition switch ON (II)

   Measure the voltage to ground: There should be about 5 V.

   - Faulty position sensor
   - A short to ground in the wire

   A10·A29

   BLU/WHT·GRN/BLK

   Run the recline motor

   Measure the voltage between the A10 (+) and A29 (−) terminals: There should be about 2.5 V average.

   - Faulty position sensor
   - An open in the wire
   - A short to ground in the wire

   A11·A29

   YEL/BLK·GRN/BLK

   Run the slide motor

   Measure the voltage between the A11 (+) and A29 (−) terminals: There should be about 2.5 V average.

   - Faulty position sensor
   - An open in the wire
   - A short to ground in the wire

   A12·A29

   BLU/BLK·GRN/BLK

   Run the front up-down motor

   Measure the voltage between the A12 (+) and A29 (−) terminals: There should be about 2.5 V average.

   - Faulty position sensor
   - An open in the wire
   - A short to ground in the wire

   A13·A29

   GRN/WHT·GRN/BLK

   Run the rear up-down motor

   Measure the voltage between the A13 (+) and A29 (−) terminals: There should be about 2.5 V average.

   - Faulty position sensor
   - An open in the wire
   - A short to ground in the wire

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

1. Remove the driver's seat.
   NOTE: Be careful not to scratch the interior trim.

1. Disconnect the 40P connector (A) and 18P connector (B) from the power seat control unit (C).

1. 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 .

1. With the connectors 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, go to Step 6 .

   Cavity | Wire | Test condition | Test: Desired result | Possible cause if desired result is not obtained
   --- | --- | --- | --- | ---

   A34

   BLK/YEL

   Ignition switch ON (II)

   Measure the voltage to ground: There should be battery voltage.

   - Blown No. 2 (7.5 A) fuse in the driver's under-dash fuse/relay box
   - An open in the wire

   A36

   BLU

   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 in the wire

   B1

   WHT

   Under all conditions

   Measure the voltage to ground: There should be battery voltage.

   - Blown No. 3−4 (DR F/B) (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 in the wire

   B8

   PUR

   Under all conditions

   Measure the voltage to ground: There should be battery voltage.

   - Blown No. 3−4 (DR F/B) (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 in the wire

   A9

   BLK/GRN

   Under all conditions

   Check for continuity to ground: There should be continuity.

   - Poor ground (G701)
   - An open in the wire

   B4

   BLK/YEL

   Under all conditions

   Check for continuity to ground: There should be continuity.

   - Poor ground (G701)
   - An open in the wire

   B18 | BLK/WHT
   A39 | BLK | Under all conditions (disconnect the power window master switch 37P connector) | Check for continuity between the A39 terminal and power window master switch 37P connector No. 33 terminal: There should be continuity. | An open in the wire
   Under all conditions (disconnect the immobilizer-keyless control unit 7P connector) | Check for continuity between the A39 terminal and immobilizer-keyless control unit 7P connector No. 3 terminal: There should be continuity. | An open in the wire
   A40 | YEL | Under all conditions (disconnect the power window master switch 37P connector) | Check for continuity between the A40 terminal and power window master switch 37P connector No. 35 terminal: There should be continuity. | An open in the wire
   Under all conditions (disconnect the immobilizer-keyless control unit 7P connector) | Check for continuity between the A40 terminal and immobilizer-keyless control unit 7P connector No. 4 terminal: There should be continuity. | An open in the wire

   A1·A7

   BRN/BLK·RED/WHT

   Slide switch in FORWARD position

   Check for continuity between the terminals: There should be continuity.

   - Faulty power seat adjustment switch
   - An open in the wire

   A1·A24

   BRN/BLK·ORN

   Slide switch in BACKWARD position

   Check for continuity between the terminals: There should be continuity.

   - Faulty power seat adjustment switch
   - An open in the wire

   A1·A6

   BRN/BLK·PNK

   Recline switch in FORWARD position

   Check for continuity between the terminals: There should be continuity.

   - Faulty power seat adjustment switch
   - An open in the wire

   A1·A23

   BRN/BLK·PUR

   Recline switch in BACKWARD position

   Check for continuity between the terminals: There should be continuity.

   - Faulty power seat adjustment switch
   - An open in the wire

   A1·A5

   BRN/BLK·LT GRN

   Front up-down switch in UP position

   Check for continuity between the terminals: There should be continuity.

   - Faulty power seat adjustment switch
   - An open in the wire

   A1·A4

   BRN/BLK·RED/BLK

   Front up-down switch in DOWN position

   Check for continuity between the terminals: There should be continuity.

   - Faulty power seat adjustment switch
   - An open in the wire

   A1·A22

   BRN/BLK·GRN/ORN

   Rear up-down switch in UP position

   Check for continuity between the terminals: There should be continuity.

   - Faulty power seat adjustment switch
   - An open in the wire

   A1·A3

   BRN/BLK·GRY

   Rear up-down switch in DOWN position

   Check for continuity between the terminals: There should be continuity.

   - Faulty power seat adjustment switch
   - An open in the wire

   B7·B17

   LT GRN·YEL

   Under all conditions

   Connect B1 and B7 terminals, and B17 and B4 terminals: The seat should slide backward.

   - Faulty slide motor
   - An open in the wire

   Connect B1 and B7 terminals, and B7 and B4 terminals: The seat should slide forward.

   B9·B11

   RED·GRY

   Under all conditions

   Connect B1 and B9 terminals, and B11 and B4 terminals: The seat should recline forward.

   - Faulty recline motor
   - An open in the wire

   Connect B1 and B11 terminals, and B9 and B4 terminals: The seat should recline backward.

   B6·B16

   BRN/WHT·ORN

   Under all conditions

   Connect B1 and B6 terminals, and B16 and B4 terminals: The front of seat should move down.

   - Faulty front up-down motor
   - An open in the wire

   Connect B1 and B16 terminals, and B6 and B4 terminals: The front of seat should move up.

   B2·B10

   ORN·BLU

   Under all conditions

   Connect B1 and B2 terminals, and B10 and B4 terminals: The rear of seat should move up.

   - Faulty rear up-down motor
   - An open in the wire

   Connect B1 and B10 terminals, and B2 and B4 terminals: The rear of seat should move down.

1. Reconnect the connectors to the power seat control unit, and 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.

   Cavity | Wire | Test condition | Test: Desired result | Possible cause if desired result is not obtained
   --- | --- | --- | --- | ---

   A26 (A/T)

   BLU/BLK

   Shift lever in P position

   Measure the voltage to ground: There should be less than 1 V.

   - Poor ground (G101)
   - Faulty transmission range switch
   - An open in the wire

   Shift lever in any other position than P

   Measure the voltage to ground: There should be 5 V or more.

   - Faulty transmission range switch
   - A short to ground in the wire

   A15

   WHT/BLK

   Ignition switch ON (II)

   Measure the voltage to ground: There should be about 5 V.

   - Faulty position sensor
   - A short to ground in the wire

   A10·A29

   BLU/WHT·GRN/BLK

   Run the recline motor

   Measure the voltage between the A10 (+) and A29 (−) terminals: There should be about 2.5 V average.

   - Faulty position sensor
   - An open in the wire
   - A short to ground in the wire

   A11·A29

   YEL/BLK·GRN/BLK

   Run the slide motor

   Measure the voltage between the A11 (+) and A29 (−) terminals: There should be about 2.5 V average.

   - Faulty position sensor
   - An open in the wire
   - A short to ground in the wire

   A12·A29

   BLU/BLK·GRN/BLK

   Run the front up-down motor

   Measure the voltage between the A12 (+) and A29 (−) terminals: There should be about 2.5 V average.

   - Faulty position sensor
   - An open in the wire
   - A short to ground in the wire

   A13·A29

   GRN/WHT·GRN/BLK

   Run the rear up-down motor

   Measure the voltage between the A13 (+) and A29 (−) terminals: There should be about 2.5 V average.

   - Faulty position sensor
   - An open in the wire
   - A short to ground in the wire