Electrical Compass Troubleshooting (2014 2015 2016)

NOTE:

Check the vehicle battery condition first - Refer to: Battery Test (2014 2015), or Battery Test (2016 2017 2018 2019 2020) .
Check the connectors for poor connections or loose terminals.

Problem verification 1
- 1. Turn the vehicle to the OFF (LOCK) mode.

- 2. Check if the azimuth (direction) information is displayed in the audio display unit.

Is the azimuth (direction) information displayed?

YES

Go to step 2.

NO

Go to step 6.
Problem verification 2
- 1. Check if the audio display unit is flashing the CAL and NW.

Is the CAL and NW flashing?

YES

Replace the electrical compass unit .

NO

Go to step 3.
Problem verification 3
- 1. Do the Electrical Compass Calibration.

Is the calibration completed?

YES

Intermittent failure, the system is OK at this time.

NO

Go to step 4.
Determine possible failure area (electrical compass unit, others)
- 1. Go into the System Diagnostic Mode, and select the Car Status in the System Links to check the vehicle speed pulse.

- 2. With the help of an assistant, test-drive the vehicle and watch the VSP signal.

Does self-diagnostic function indicate a vehicle speed?

YES

Replace the electrical compass unit .

NO

Go to step 5.

Open wire check (B-CAN_H line, B-CAN_L line)

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

- 2. Disconnect the following connectors.

Audio unit connector A (24P)

Gauge control module 32P connector

- 3. Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	Audio unit connector A (24P): disconnected
	Gauge control module 32P connector: disconnected
Test circuit	B-CAN_H
Test point 1	Audio unit connector A (24P) No. 4 (PNK)
Test point 2	Gauge control module 32P connector No. 25 (PNK)

Test circuit	B-CAN_L
Test point 1	Audio unit connector A (24P) No. 2 (BLU)
Test point 2	Gauge control module 32P connector No. 26 (BLU)

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

Is there continuity?

YES

Replace the audio unit .

Repair an open in the wire(s) between the audio unit and the gauge control module.

Open wire check (IG1 METER line)

- 1. Turn the vehicle to the ON mode.

- 2. Measure the voltage between test points 1 and 2.

Test condition	ON mode
Test circuit	IG1 METER
Test point 1	Electrical compass unit 6P connector No. 6 (PNK)
Test point 2	Body ground

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

Is there battery voltage?

YES

The IG1 METER wire is OK. Go to step 7.

Repair an open or high resistance in the wire between the No. D11 (7.5 A) fuse in the under-dash fuse/relay box and the electrical compass unit.

Open wire check (GND line)

- 1. Measure the voltage between test points 1 and 2.

Test condition	ON mode
Test circuit	GND
Test point 1	Electrical compass unit 6P connector No. 5 (BLK)
Test point 2	Body ground

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

Is there less than 0.2 V?

YES

The GND wire is OK. Go to step 8.

Repair an open or high resistance in the wire between the electrical compass unit and body ground (G502).

Shorted wire check (COMPASS lines)

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

- 2. Disconnect the following connectors.

Audio unit connector C (20P)

Electrical compass unit 6P connector

- 3. Check for continuity between these test points and body ground individually.

Test condition	Vehicle OFF (LOCK) mode
	Audio unit connector C (20P): disconnected
	Electrical compass unit 6P connector: disconnected

Connector	Test circuit	Terminal
Electrical compass unit 6P connector	COMPASS 1	No. 4 (PNK)
	COMPASS 2	No. 3 (ORN)
	COMPASS 3	No. 2 (BLU)
	COMPASS 4	No. 1 (GRN)

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

Is there continuity?

YES

Repair a short to body ground in the wire(s) between the electrical compass unit and the audio unit.

The COMPASS wires are not shorted to ground. Go to step 9.

Open wire check (COMPASS lines)

- 1. Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	Audio unit connector C (20P): disconnected
	Electrical compass unit 6P connector: disconnected

Test circuit	Test point 1:Audio unit connector C (20P)	Test point 2:Electrical compass unit 6P connector
COMPASS 1	No. 9 (PNK)	No. 4 (PNK)
COMPASS 2	No. 10 (ORN)	No. 3 (ORN)
COMPASS 3	No. 19 (BLU)	No. 2 (BLU)
COMPASS 4	No. 20 (GRN)	No. 1 (GRN)

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

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

Is there continuity?

YES

The COMPASS wires are OK. Go to step 10.

Repair an open in the wire(s) between the electrical compass unit and the audio unit.

Audio unit check
- 1. Substitute a known-good electrical compass unit.

- 2. Reconnect all the connectors, and recheck.

Does the symptom go away?

YES

Replace the original electrical compass unit .

NO

Replace the audio unit .