Electrical Compass Troubleshooting

NOTE:

Check the vehicle 12 volt battery condition first - Refer to: 12 Volt Battery Test (Without SH-AWD), or 12 Volt Battery Test (With SH-AWD) .
Check for B-CAN DTCs and resolve them before troubleshooting.
Check the connectors for poor connections or loose terminals.

Problem verification 1
- 1. Turn the vehicle to the ON mode.

- 2. Check if the azimuth (direction) information is displayed in the center 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 center display unit is flashing the CAL and the NW.

Are the CAL and the NW flashing?

YES

Reboot the electrical compass unit, and recheck. If the symptom is still present, replace the electrical compass unit .

NO

Go to step 3.
Compass calibration check
- 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.
System Diagnostic Mode check
- 1. Go into the System Diagnostic Mode, and use the System Links to check the B-CAN icon status.

Is the B-CAN icon green?

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.

NOTE:

Eject the disc before disconnecting the audio unit to prevent damaging the CD player's load mechanism.

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 point 1	Audio unit connector A (24P) No. 4 - Refer to: Audio Unit Connector for Inputs and Outputs (With Auto Idle Stop System) (2015-17), or Audio Unit Connector for Inputs and Outputs (Without Auto Idle Stop System) (2015-17), or Audio Unit Connector for Inputs and Outputs (2018), or Audio Unit Connector for Inputs and Outputs (2019)
Test point 2	Gauge control module 32P connector No. 25 - Refer to: Gauge Control Module Input Test (2015-17), or Gauge Control Module Input Test (2018-19)

Test point 1	Audio unit connector A (24P) No. 2 - Refer to: Audio Unit Connector for Inputs and Outputs (With Auto Idle Stop System) (2015-17), or Audio Unit Connector for Inputs and Outputs (Without Auto Idle Stop System) (2015-17), or Audio Unit Connector for Inputs and Outputs (2018), or Audio Unit Connector for Inputs and Outputs (2019)
Test point 2	Gauge control module 32P connector No. 26 - Refer to: Gauge Control Module Input Test (2015-17), or Gauge Control Module Input Test (2018-19)

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 (GND line)

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

- 2. Disconnect the following connector.

Electrical compass unit 6P connector

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

Test condition	Vehicle OFF (LOCK) mode
	Electrical compass unit 6P connector: disconnected
Test point 1	Electrical compass unit 6P connector No. 5
Test point 2	Body ground

Is there continuity?

YES

The GND wire is OK. Go to step 7.

Repair an open in the wire between the electrical compass unit and body ground (G501).

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	Vehicle ON mode
	Electrical compass unit 6P connector: disconnected
Test point 1	Electrical compass unit 6P connector No. 6
Test point 2	Body ground

Is there battery voltage?

YES

The IG1 METER wire is OK. Go to step 8.

Repair an open in the wire between the No. B5 (7.5 A) fuse in the under-dash fuse/relay box and the electrical compass unit.

Shorted wire check (COMPASS lines)

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

- 2. Disconnect the following connector.

Audio unit connector C (20P)

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

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

Connector	Terminal
Electrical compass unit 6P connector	No. 4
	No. 3
	No. 2
	No. 1

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
	Electrical compass unit 6P connector: disconnected
	Audio unit connector C (20P): disconnected

Test point 1: Audio unit connector C (20P)	Test point 2: Electrical compass unit 6P connector
No. 9	No. 4
No. 10	No. 3
No. 19	No. 2
No. 20	No. 1

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.

Electrical compass unit check (substitution)
- 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 .