( TL19E00J26346141953FCAT00 )

Reminder Systems (Driver's MICU and Gauge Control Module) Input Test

Gauge Control Module

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

1. Remove the gauge control module, and disconnect the 32P connector from it.

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 are OK, go to Step 10 .

1. Reconnect the connector to the gauge control module, and make these input tests at all connector.
   - If any test indicates a problem, find and correct the cause, then recheck the system.
   - If the input tests prove OK, go to Step 11 .

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

   17

   BRN

   Under all conditions

   Check for continuity to ground: There should be continuity.

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

   16

   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

   15

   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

   31

   LT GRN

   Parking brake switch ON (Lever pulled)

   Check for continuity to ground: There should be continuity.

   - Faulty parking brake switch
   - An open in the wire

   Parking brake switch OFF (Lever released)

   Check for continuity to ground: There should be no continuity.

   - Faulty parking brake switch
   - A short to ground in the wire

1. If the lights-on reminder has a problem, substitute a known-good driver's under-dash fuse/relay box, and recheck the system. If the seat belt reminder has a problem, check for SRS DTCs and check the seat belt buckle switches. If all the tests prove OK, go to Step 12 .

1. Substitute a known-good gauge control module, and recheck the system.
   - If the symptom is gone, the gauge control module is faulty; replace it.
   - If the symptom is still present, the driver's MICU is faulty; replace the driver's under-dash fuse/relay box.