Gauge Control Module Input Test
NOTE:
- Before testing, DO THE GAUGE CONTROL MODULE SELF-DIAGNOSTIC FUNCTION , and make sure the B-CAN communication lines are OK.
- Before testing, make sure the No. A29 (10 A) fuse in the under-hood fuse/relay box is OK.
- Before testing, make sure the No. B5 (10 A) fuse in the under-dash fuse/relay box is OK.
- Turn the ignition switch to LOCK (0).
- Disconnect the gauge control module 32P connector See GAUGE CONTROL MODULE REMOVAL AND INSTALLATION or REWRITING THE ODO DATA AND TRANSFERRING THE MAINTENANCE MINDER™ DATA TO A NEW GAUGE CONTROL MODULE.
- 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 4.
- With the connector still disconnected, do the following input tests:
- 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 5.
Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained 15 GRN Combination light switch ON Connect to ground with a jumper wire:
The dashlights should come on full bright.- Faulty LEDs
- An open or high resistance in the wire
16 RED Combination light switch ON Connect to ground with a jumper wire:
The dashlights should come on full bright.- Faulty bulbs
- An open or high resistance in the wire
9 BRN Ignition switch ON (II), turn signal switch to LEFT Measure the voltage to ground:
There should be battery voltage when the lights are flashing.- Faulty MICU
- Faulty combination light switch
- An open or high resistance in the wire
10 GRN Ignition switch ON (II), turn signal switch to RIGHT Measure the voltage to ground:
There should be battery voltage when the lights are flashing.- Faulty MICU
- Faulty combination light switch
- An open or high resistance in the wire
5(1) GRY Disconnect the outside air temperature sensor 2P connector Check for continuity between terminal No. 5 and outside air temperature sensor 2P connector terminal No. 2: There should be continuity. An open or high resistance in the wire Check for continuity between terminal No. 5 and body ground:
There should be no continuity.A short to ground in the wire 6(1) PNK Disconnect the outside air temperature sensor 2P connector Check for continuity between terminal No. 6 and outside air temperature sensor 2P connector terminal No. 1: There should be continuity. An open or high resistance in the wire Check for continuity between terminal No. 6 and body ground:
There should be no continuity.A short to ground in the wire (1) With manual A/C and outside air temperature indication function
- Reconnect the connector to the gauge control module, and do the following input tests:
- If any test indicates a problem, find and correct the cause, then recheck the system.
- If all the input tests prove OK, replace the gauge control module
See GAUGE CONTROL MODULE REMOVAL AND INSTALLATION or REWRITING THE ODO DATA AND TRANSFERRING THE MAINTENANCE MINDER™ DATA TO A NEW GAUGE CONTROL MODULE.
Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained 1 RED Under all conditions Measure the voltage to ground:
There should be battery voltage.- Blown No. A29 (10 A) fuse in the under-hood fuse/relay box
- An open or high resistance in the wire
17 LT GRN Ignition switch ON (II) Measure the voltage to ground:
There should be battery voltage.- Blown No. B5 (10 A) fuse in the under-dash fuse/relay box
- An open or high resistance in the wire
32 BRN In all ignition switch positions Measure the voltage to ground:
There should be less than 0.2 V.- Poor ground (G502)
- An open or high resistance in the ground wire
4 BRN In all ignition switch positions Measure the voltage to ground:
There should be less than 0.2 V.- Poor ground (G502)
- An open or high resistance in the ground wire
2 PUR Ignition switch ON (II), ECON button pushed Measure the voltage to ground:
There should be less than 0.2 V.- Faulty ECON switch
- Poor ground (G501) or an open in the ground wire
- An open or high resistance in the wire
Ignition switch ON (II), ECON button released Measure the voltage to ground:
There should be about 5 V.- Faulty ECON switch
- A short to ground in the wire
25 GRY Ignition switch ON (II), Brake fluid is at full level in the reservoir Measure the voltage to ground:
There should be about 5 V.- Faulty brake fluid level switch
- A short to ground in the wire
Ignition switch ON (II), Brake fluid is at lower level in the reservoir Measure the voltage to ground:
There should be less than 0.2 V.- Faulty brake fluid level switch
- Poor ground (G402) or an open in the ground wire
- An open or high resistance in the wire
26 BLU Ignition switch ON (II), Parking brake pedal pressed Measure the voltage to ground:
There should be less than 0.2 V.- Faulty parking brake switch
- Faulty parking brake switch ground
- An open or high resistance in the wire
Ignition switch ON (II), Parking brake pedal released Measure the voltage to ground:
There should be about 5 V.- Faulty parking brake switch
- A short to ground in the wire
27(1) YEL Ignition switch ON (II), washer fluid is half or more in the washer reservoir Measure the voltage to ground:
There should be about 5 V.- Faulty washer fluid level switch
- A short to ground in the wire
Ignition switch ON (II), washer fluid is empty in the washer reservoir Measure the voltage to ground:
There should be less than 0.2 V.- Faulty washer fluid level switch
- Poor ground (G202) or an open in the ground wire
- An open or high resistance in the wire
(1) Canada models