Gauge Control Module Input Test (5-door) (2017 2018 2019 2020 2021)

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 .
• Before testing, make sure the No. A18 (10 A) fuse in the under-hood fuse/relay box is OK.
• Before testing, make sure the No. B7 (10 A) fuse in the under-dash fuse/relay box is OK.

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

2. Disconnect gauge control module connector A (32P).

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

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
A10	PNK	Disconnect the VSA modulator-control unit 46P connector	Check for continuity between terminal No. A10 and VSA modulator-control unit 46P connector terminal No. 16: There should be continuity.	An open or high resistance in the wire

*: With moonroof

Cavity	Wire	Test condition	Test: Desired result	Possible cause if desired result is not obtained
A15	BLU	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
A16 *	TAN	Combination light switch ON	Connect to ground with a jumper wire: The dashlights should come on full bright.	Blown bulbs An open or high resistance in the wire

*: With moonroof

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
A1	RED	Under all conditions	Measure the voltage to ground: There should be battery voltage.	Blown No. A18 (10 A) fuse in the under-hood fuse/relay box An open or high resistance in the wire
A17	BRN	Vehicle ON mode	Measure the voltage to ground: There should be battery voltage.	Blown No. B7 (10 A) fuse in the under-dash fuse/relay box An open or high resistance in the wire
A4	BLK	In all power modes	Measure the voltage to ground: There should be less than 0.2 V.	Poor ground (G501) An open or high resistance in the ground wire
A32	BLK	In all power modes	Measure the voltage to ground: There should be less than 0.2 V.	Poor ground (G501) An open or high resistance in the ground wire
A11	PNK	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
		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
A8 *1	GRN	Vehicle ON mode, ECON button pushed	Measure the voltage to ground: There should be less than 0.2 V.	Faulty ECON switch Poor ground (G502) or an open in the ground wire An open or high resistance in the wire
		Vehicle ON mode, ECON button released	Measure the voltage to ground: There should be battery voltage.	Faulty ECON switch A short to ground in the wire

*1: With ECON switch

*2: With integrated drive-mode switch

*3: Canada models

Cavity	Wire	Test condition	Test: Desired result	Possible cause if desired result is not obtained
A8 *2	BLU	Vehicle ON mode, integrated drive-mode switch (↓) pushed	Measure the voltage to ground: There should be less than 0.2 V.	Faulty integrated drive-mode switch Poor ground (G502) or an open in the ground wire An open or high resistance in the wire
		Vehicle ON mode, integrated drive-mode switch (↓) released	Measure the voltage to ground: There should be battery voltage.	Faulty integrated drive-mode switch A short to ground in the wire
A25 *2	WHT	Vehicle ON mode, integrated drive-mode switch (↓) pushed	Measure the voltage to ground: There should be less than 0.2 V.	Faulty integrated drive-mode switch Poor ground (G502) or an open in the ground wire An open or high resistance in the wire
		Vehicle ON mode, integrated drive-mode switch (↓) released	Measure the voltage to ground: There should be battery voltage.	Faulty integrated drive-mode switch A short to ground in the wire
A24 *3	BRN	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
		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

*1: With ECON switch

*2: With integrated drive-mode switch

*1: With ECON switch