( TL19E00J34600041953FCAT00 )

MICS (Driver's MICU, 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 N, 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
   --- | --- | --- | --- | ---

   N12

   BRN [BLK]

   Under all conditions

   Check for continuity to ground: There should be continuity.

   - Poor ground (G501) [G502]
   - An open in the wire

   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

   Q16 | LT BLU | Under all conditions | Check for continuity between the Q16 terminal and the data link connector 16P connector No. 7 terminal: There should be continuity. | An open in the wire

   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 (LHD model)
   - Faulty passenger's under-dash fuse/relay box (RHD model)
   - An open in the wire

   P20

   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
   - An open in the wire

   P5 | BLU | Immobilizer-keyless control unit 7P connector disconnected | Check for continuity between the P5 terminal and the immobilizer-keyless control unit 7P connector No. 3 terminal: There should be continuity. | An open in the wire
   P6 | PNK | Check for continuity between the P6 terminal and the immobilizer-keyless control unit 7P connector No. 4 terminal: There should be continuity. | An open in the wire
   P5 | BLU | Gauge control module 32P connector disconnected | Check for continuity between the P5 terminal and the gauge control module 32P connector No. 23 terminal: There should be continuity. | An open in the wire
   P6 | PNK | Check for continuity between the P6 terminal and the gauge control module 32P connector No. 24 terminal: There should be continuity. | An open in the wire
   P5 | BLU | Door multiplex control unit 37P connector disconnected | Check for continuity between the P5 terminal and the door multiplex control unit 37P connector No. 33 terminal: There should be continuity. | An open in the wire
   P6 | PNK | Check for continuity between the P6 terminal and the door multiplex control unit 37P connector No. 35 terminal: There should be continuity. | An open in the wire

   [ ]: | RHD model

   Cavity | Wire | Test condition | Test: Desired result | Possible cause if desired result is not obtained
   --- | --- | --- | --- | ---
   P5 | BLU | Passenger's under-dash fuse/relay box connector A (38P) disconnected | Check for continuity between the P5 terminal and passenger's under-dash fuse/relay box connector A (38P) No.29 terminal:There should be continuity. | An open in the wire
   P6 | PNK | Check for continuity between the P6 terminal and passenger's under-dash fuse/relay box connector A (38P) No.11 terminal:There should be continuity. | An open in the wire
   P5 | BLU | Heater control unit/climate control unit connector B (12P) disconnected | Check for continuity between the P5 terminal and heater control unit/climate control unit connector B (12P) No.2 terminal:There should be continuity. | An open in the wire
   P6 | PNK | Check for continuity between the P6 terminal and heater control unit/climate control unit connector B (12P) No.1 terminal:There should be continuity. | An open in the wire
   P5 | BLU | Audio unit connector B (20P) disconnected | Check for continuity between the P5 terminal and audio unit connector B (20P) No. 8 terminal:There should be continuity. | An open in the wire
   P6 | PNK | Check for continuity between the P6 terminal and audio unit connector B (20P) No. 18 terminal:There should be continuity. | An open in the wire
   P5 | BLU | Headlight leveling control unit *1 16P connector disconnected | Check for continuity between the P5 terminal and the headlight leveling control unit 16P connector No. 15 terminal:There should be continuity. | An open in the wire
   P6 | PNK | Check for continuity between the P5 terminal and the headlight leveling control unit 16P connector No. 16 terminal:There should be continuity. | An open in the wire
   P5 | BLU | Automatic lighting/rain sensor *2 6P connector disconnected | Check for continuity between the P5 terminal and the automatic lighting/rain sensor 6P connector No. 6 terminal:There should be continuity. | An open in the wire
   P6 | PNK | Check for continuity between the P5 terminal and the automatic lighting/rain sensor 6P connector No. 5 terminal:There should be continuity. | An open in the wire

   *1: | With headlight leveling system
   *2: | With automatic wiper

   Cavity | Wire | Test condition | Test: Desired result | Possible cause if desired result is not obtained
   --- | --- | --- | --- | ---
   P5 | BLU | Power seat control unit *3 connector A (40P) disconnected | Check for continuity between the P5 terminal and power seat control unit connector A (40P) No. 39 terminal:There should be continuity. | An open in the wire
   P6 | PNK | Check for continuity between the P6 terminal and power seat control unit connector A (40P) No. 40 terminal:There should be continuity. | An open in the wire
   P5 | BLU | Hands Free Telephone control unit *4 28P connector disconnected | Check for continuity between the P5 terminal and the Hands Free Telephone control unit 28P connector No.17 terminal:There should be continuity. | An open in the wire
   P6 | PNK | Check for continuity between the P6 terminal and the Hands Free Telephone control unit 28P connector No.18 terminal:There should be continuity. | An open in the wire
   P5 | BLU | Parking and back-up sensor control unit *5 16P connector disconnected | Check for continuity between the P5 terminal and the parking and back-up sensor control unit 16P connector No. 6 terminal:There should be continuity. | An open in the wire
   P6 | PNK | Check for continuity between the P6 terminal and the parking and back-up sensor control unit 16P connector No. 7 terminal:There should be continuity. | An open in the wire

   *3: | With DPMS
   *4: | With Hands Free Telephone system
   *5: | With parking and back-up sensor system