( TL19E00J46643441953FCAT00 )

Keyless/Power Door Locks/Security System (Driver's and Passenger's MICU, Door Multiplex Control Unit, and Front Passenger's Power Window Switch) Input Test

Door Multiplex Control Unit

1. Turn the ignition switch to LOCK (0), and remove the power window master switch.

1. Disconnect the 37P connector from the door multiplex control unit.

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 15 .

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 the input test proves OK, go to Step 16 .

   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
   - An open in the wire

   14

   LT GRN

   Under all conditions

   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

   27 | BLU [BLK] | Under all conditions (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

   [ ]: | RHD model

1. Reconnect the 37P connector to the door multiplex control unit, 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, go to Step 17 .

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

   28

   ORN

   Driver's door key cylinder switch in LOCK

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

   - Poor ground (G501)
   - Faulty driver's door key cylinder switch
   - An open in the wire

   Driver's door key cylinder switch in neutral or UNLOCK

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

   - Faulty driver's key cylinder switch
   - A short to ground in the wire

   29

   BRN

   Driver's door key cylinder switch in UNLOCK

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

   - Poor ground (G501)
   - Faulty driver's door key cylinder switch
   - An open in the wire

   Driver's door key cylinder switch in neutral or LOCK

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

   - Faulty driver's door key cylinder switch
   - A short to ground in the wire

   30

   YEL [GRN]

   Driver's door lock knob switch in LOCK

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

   - Poor ground (G501)
   - Faulty driver's door lock knob switch
   - An open in the wire

   Driver's door lock knob switch in UNLOCK

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

   - Faulty driver's door lock knob switch
   - A short to ground in the wire

   31

   WHT

   Driver's door lock knob switch in UNLOCK

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

   - Poor ground (G501)
   - Faulty driver's door lock knob switch
   - An open in the wire

   Driver's door lock knob switch in LOCK

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

   - Faulty driver's door lock knob switch
   - A short to ground in the wire

   [ ]: | RHD model