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.
If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A - Refer to: Body Electrical Troubleshooting - B-CAN System Diagnosis Test Mode A - Initial Communication and DTC Checks .
Before testing, make sure the No. B29 (10 A) fuse in the under-hood fuse/relay box is OK.
Before testing, make sure the No. C34 (7.5 A) fuse in the under-dash fuse/relay box is OK.

1. Turn the vehicle to the OFF (LOCK) mode

2. Disconnect the gauge control module 32P connector.

Courtesy of HONDA, U.S.A., INC.

3. 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.

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
3	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
5	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

5. Reconnect the connector, 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 .

Cavity	Wire	Test condition	Test: Desired result	Possible cause if desired result is not obtained
16	RED	Under all conditions	Measure the voltage to ground: There should be battery voltage.	Blown No. B29 (10 A) fuse in the under-hood fuse/relay box Faulty under-dash fuse/relay box An open or high resistance in the wire
15	LT GRN	Vehicle ON mode	Measure the voltage to ground: There should be battery voltage.	Blown No. C34 (7.5 A) fuse in the under-dash fuse/relay box An open or high resistance in the wire
1	BLK	In all power modes	Measure the voltage to ground: There should be less than 0.2 V.	Poor ground (G401) An open or high resistance in the ground wire
17	BLK	In all power modes	Measure the voltage to ground: There should be less than 0.2 V.	Poor ground (G401) An open or high resistance in the ground wire
6	LT BLU	Vehicle ON mode, brake fluid is at full level in the reservoir	Measure the voltage to ground: There should be battery voltage.	Faulty brake fluid level switch A short to ground in the wire
6	LT BLU	Vehicle ON mode, 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 (G302) or an open in the ground wire An open or high resistance in the wire
4	BLU	Vehicle ON mode, parking brake lever pulled	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
4	BLU	Vehicle ON mode, parking brake lever released	Measure the voltage to ground: There should be battery voltage.	Faulty parking brake switch A short to ground in the wire
26	PUR	Vehicle ON mode, ECON switch ON	Measure the voltage to ground: There should be less than 0.2 V.	Faulty ECON switch Poor ground (G401) or an open in the ground wire An open or high resistance in the wire
26	PUR	Vehicle ON mode, ECON switch OFF	Measure the voltage to ground: There should be battery voltage.	Faulty ECON switch A short to ground in the wire
7	YEL	Vehicle ON mode, washer fluid is half or more in the washer reservoir	Measure the voltage to ground: There should be battery voltage.	Faulty washer fluid level switch A short to ground in the wire
7	YEL	Vehicle ON mode, 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 (G302) or an open in the ground wire An open or high resistance in the wire