( TL19E00J32323341953FCAT00 )

Entry Lights Control System (Driver's and Passenger's MICU, and Door Multiplex Control Unit) Input Test

Driver's MICU

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

1. Remove the driver's dashboard undercover, then remove the dashboard lower cover.

1. Disconnect driver's under-dash fuse/relay box connectors D, P, Q, and R.
   NOTE: All connector views are wire side of female terminals.

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
   --- | --- | --- | --- | ---

   Q1

   BLK

   Under all conditions

   Check for continuity to ground:
   There should be continuity.

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

   Q2

   BRN

   Under all conditions

   Check for continuity to ground:
   There should be continuity.

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

   R2

   BRN

   Under all conditions

   Check for continuity to ground:
   There should be continuity.

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

   R5

   BLK

   Under all conditions

   Check for continuity to ground:
   There should be continuity.

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

   P4

   PNK

   Under all conditions (Ceiling light switch in middle position and interior light switch * in DOOR position)

   Attach to ground:
   The ceiling light and map light * should come on.

   - Blown No. 16 (7.5 A) fuse in the under-hood fuse/relay box
   - Faulty ceiling light
   - Faulty map light *
   - Faulty interior light switch *
   - Blown bulb
   - An open in the wire

   Q11

   RED

   Under all conditions

   Attach to ground:
   The ignition key light should come on.

   - Blown No. 16 (7.5 A) fuse in the under-hood fuse/relay box
   - Faulty ignition key light
   - An open in the wire

   *: | With sunroof

1. Reconnect the connectors to the driver's under-dash fuse/relay box, 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 7 .

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

   P9

   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

   D4

   LT GRN

   Left [right] rear door open

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

   - Faulty left [right] rear door switch
   - An open in the wire

   Left [right] rear door closed

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

   - Faulty left [right] rear door switch
   - A short to ground in the wire

   D12

   BRN [GRN]

   Driver's door open

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

   - Faulty driver's door switch
   - An open in the wire

   Driver's door closed

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

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

   Q18

   WHT

   Ignition key inserted into the ignition switch

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

   - Faulty ignition key switch
   - An open in the wire

   Ignition switch in LOCK (0) position, and the ignition key removed from the ignition switch

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

   - Faulty ignition key switch
   - A short to ground in the wire

   [ ]: | RHD model