( TL19E00J54460641902FCAT00 )

Power Windows (Door Multiplex Control Unit) Input Test

1. Turn the ignition switch to LOCK (0), open and close the driver's door, then remove the power window master switch.

1. Disconnect the 37P connector (A) from the door power window master switch (B).

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 4 .

1. 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, go to Step 5 .

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

   32

   BLK

   Under all conditions

   Check for continuity to ground: There should be continuity.

   - Poor ground (G501)
   - An open in the wire

   37

   BLK

   Under all conditions

   Check for continuity to ground: There should be continuity.

   - Poor ground (G502)
   - An open in the wire

   13

   WHT

   Under all conditions

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

   - Blown No. 15 (10 A) fuse in the under-hood fuse/relay box
   - Faulty driver's under-dash fuse/relay box
   - [Faulty passenger's under-dash fuse/relay box]
   - An open in the wire

   14

   LT GRN

   Ignition switch ON (II)

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

   - Blown No. 16 (7.5 A) fuse in the driver's under-dash fuse/relay box
   - Faulty driver's under-dash fuse/relay box
   - An open in the wire

   25

   WHT [GRN]

   Under all conditions

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

   - Blown No. 24 (20 A) fuse in the driver's under-dash fuse/relay box
   - Faulty driver's under-dash fuse/relay box
   - An open in the wire

   12

   YEL

   Connect No. 25 and No. 24 (or No. 12) terminals, and No. 37 and No. 12 (or No. 24) terminals with jumper wires.

   Check driver's power window motor operation:The driver's power window should open (or close)

   - Faulty driver's power window motor
   - An open in the wire

   24 | GRN
   27 | BLU [BLK] | Disconnect the front passenger's power window switch 37P connector. | Check for continuity between the No. 27 terminal and the front passenger's power window switch 37P connector No. 29 terminal: There should be continuity. | An open in the wire
   27 *2 | BLU [BLK] | Disconnect the left rear power window switch 14P connector. | Check for continuity between the No. 27 terminal and the left rear power window switch 14P connector No. 12 terminal: There should be continuity. | An open in the wire
   27 *2 | BLU [BLK] | Disconnect the right rear power window switch 14P connector. | Check for continuity between the No. 27 terminal and the right rear power window switch 14P connector No. 12 terminal: There should be continuity. | An open in the wire

   [ ]: | RHD model
   *2: | With all power windows AUTO UP/AUTO DOWN function

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

   23 * (LHD model)

   GRN

   Connect No. 25 and No. 36 (or No. 23) terminals.

   Check left rear power window motor operation:The left rear power window should open (or close).

   - Poor ground (G601)
   - Faulty left rear power window switch
   - Faulty left rear power window motor
   - An open in the wire

   36 * (LHD model) | LT BLU

   23 (RHD model)

   GRN

   Ignition switch ON (II), connect No. 25 and No. 36 (or No. 23) terminals, and No. 37 and No. 23 (or No. 36) terminals with jumper wires.

   Check left rear power window motor operation:The left rear power window should open (or close).

   - Faulty passenger's under-dash fuse/relay box
   - Poor ground (G651)
   - Faulty left rear power window switch
   - Faulty left rear power window motor
   - An open in the wire

   36 (RHD model) | LT BLU

   21 * (LHD model)

   LT BLU

   Connect No. 25 and No. 34 (or No. 21) terminals.

   Check right rear power window motor operation: The right rear power window should open (or close).

   - Faulty passenger's under-dash fuse/relay box
   - Poor ground (G651)
   - Faulty right rear power window switch
   - Faulty right rear power window motor
   - An open in the wire

   34 * (LHD model) | LT GRN

   21 (RHD model)

   LT BLU

   Connect No. 25 and No. 34 (or No. 21) terminals.

   Check right rear power window motor operation: The right rear power window should open (or close).

   - Poor ground (G601)
   - Faulty right rear power window switch
   - Faulty right rear power window motor
   - An open in the wire

   34 (RHD model) | LT GRN

   26 *

   PNK

   Ignition switch ON (II), connect No. 14 and No. 26 terminals with a jumper wire.

   Check left and right rear power window switch lights:The left and right rear power window switch lights should come on.

   - Faulty LED
   - Poor ground (G601, G651)
   - Faulty left or right rear power window switch
   - An open in the wire

   *: | Without all power windows AUTO UP/AUTO DOWN function

1. Reconnect the connector to the door multiplex control unit, turn the ignition switch ON (II), and 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 door multiplex control unit is faulty; replace the power window master switch.
   NOTE: After replacing the power window master switch, reset the power window control unit.

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

   3

   PUR

   Ignition switch ON (II)

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

   - Faulty door multiplex control unit
   - A short to ground in the wire

   20

   ORN

   Ignition switch ON (II), and driver's power window moving up or down

   Measure the voltage between the No. 20 and No. 37 terminals: There should be 0 V−about 5 V−0 V−about 5 V repeatedly (a digital voltmeter should read about 2.5 V while the window moves).

   - Faulty door multiplex control unit
   - Faulty driver's power window motor
   - An open in the wire
   - A short to ground in the wire

   22

   PNK

   Ignition switch ON (II), and driver's power window moving up or down

   Measure the voltage between the No. 22 and No. 37 terminals: There should be 0 V−about 5 V−0 V−about 5 V repeatedly (a digital voltmeter should read about 2.5 V while the window moves).

   - Faulty door multiplex control unit
   - Faulty driver's power window motor
   - An open in the wire
   - A short to ground in the wire