( TL19E00J32100041953FCAT00 )

Exterior Lights (Driver's and Passenger's MICU) Input Test

Passenger's MICU

1. Turn the ignition switch to LOCK (0), and remove the passenger's side kick panel.

1. Disconnect passenger's under-dash fuse/relay box connectors A, E, and F.
   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 10 .

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 11 .

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

   A36

   BLK

   Under all conditions

   Check for continuity to ground: There should be continuity.

   - Poor ground (G505)
   - An open in the wire

   A37

   BLK

   Under all conditions

   Check for continuity to ground: There should be continuity.

   - Poor ground (G505)
   - An open in the wire

   E15

   BLK

   Under all conditions

   Check for continuity to ground: There should be continuity.

   - Poor ground (G201) [G302]
   - An open in the wire

   E16

   BLK

   Under all conditions

   Check for continuity to ground: There should be continuity.

   - Poor ground (G201) [G302]
   - An open in the wire

   A8

   WHT

   Under all conditions

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

   - Blown No. 3-3 (AS LT MAIN) (50 A) fuse in the under-hood fuse/relay box
   - Faulty driver's under-dash fuse/relay box
   - An open in the wire

   A14 (LHD model)

   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
   - An open in the wire

   A35 (LHD model)

   BRN

   Ignition switch ON (II)

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

   - Blown No. 5 (7.5 A) fuse in the driver's under-dash fuse/relay box
   - Faulty driver's under-dash fuse/relay box

   E3 (RHD model)

   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

   F1

   GRN

   Under all conditions

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

   - Blown No. 3-3 (AS LT MAIN) (50 A) fuse in the under-hood fuse/relay box
   - An open in the wire

   A17 | GRN | Under all conditions | Check for continuity between the A17 terminal and driver's under-dash fuse/relay box connector Q (20P) No. 8 terminal: There should be continuity. | An open in the wire

   A24 *

   WHT

   Under all conditions

   Attach to ground:The front position lights, taillights, and license plate should come on.

   - Blown bulb
   - Poor ground (G201, G302, G901)
   - Faulty daytime running lights relay
   - An open in the wire

   [ ]: | RHD model

   *: | With daytime running lights

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

   E2

   ORN [WHT/RED]

   Under all conditions

   Connect the A8 [F1] and E2 terminals with a jumper wire: The right [left] headlight (high beam) should come on.

   - Blown bulb
   - Poor ground (G201) [G302]
   - An open in the wire

   E10

   BRN [RED/YEL]

   Under all conditions

   Connect the A8 [F1] and E10 terminals with a jumper wire: The right [left] headlight (low beam) should come on.

   - Blown bulb
   - Poor ground (G201) [G302]
   - An open in the wire

   E12

   GRY [RED]

   Under all conditions

   Connect the A8 [F1] and E12 terminals with a jumper wire: The right [left] front position light should come on.(With daytime running lights, the taillights and license plate lights also should come on.)

   - Blown bulb
   - Poor ground (G201, G302 * , G901 * ) [G302]
   - An open in the wire

   [ ]: | RHD model

   *: | With daytime running lights

1. Reconnect the connectors to the passenger'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 12 .

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

   A14 (RHD model)

   WHT

   Under all conditions

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

   - Faulty passenger's under-dash fuse/relay box
   - An open in the wire

1. If multiple failures are found on more than one control unit, replace the driver's under-dash fuse/relay box (includes the driver's MICU). If input failures are related to a particular control unit, replace the control unit.