Electrical Compass Troubleshooting (With Normal Audio)

NOTE: 

• Check the vehicle 12 volt battery condition first .
• Check for B-CAN DTCs and resolve them before troubleshooting.
• Check the connectors for poor connections or loose terminals.

• 1. Problem verification 1:

  - 1. Turn the vehicle to the ON mode.

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

  Is the azimuth (direction) information displayed?

  YES 

  Go to step 2.

  NO 

  Go to step 6.

• 2. Problem verification 2:

  - 1. Check if the multi-information 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.

• 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.

• 4. Determine possible failure area (electrical compass unit, others):

  - 1. Do the Self-Diagnostic Function for the vehicle speed pulse indication - Refer to: How to Troubleshoot the Audio SystemAudio System Self-Diagnostic Function .

  - 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.

• 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 B (20P)

  Gauge control module connector A (32P)

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

  Test condition	Vehicle OFF (LOCK) mode
  	Audio unit connector B (20P): disconnected
  	Gauge control module connector A (32P): disconnected

  Test point 1	Audio unit connector B (20P) No. 13 - Refer to: Audio Unit Connector for Inputs and Outputs (With Display Audio)Audio Unit Connector for Inputs and Outputs (With Normal Audio)
  Test point 2	Gauge control module connector A (32P) No. 30

  Test point 1	Audio unit connector B (20P) No. 3 - Refer to: Audio Unit Connector for Inputs and Outputs (With Display Audio)Audio Unit Connector for Inputs and Outputs (With Normal Audio)
  Test point 2	Gauge control module connector A (32P) No. 31

  Is there continuity?

  YES 

  Replace the audio unit - Refer to: Audio Unit Removal and Installation (With Display Audio)Audio Unit Removal and Installation (With Normal Audio) .

  NO 

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

• 6. Open wire check (IG1 METER line):

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

  Test condition	Vehicle ON mode
  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 7.

  NO 

  Repair an open or high resistance in the wire between the No. B5 (10 A) fuse in the under-dash fuse/relay box and the electrical compass unit.

• 7. Open wire check (GND line):

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

  Test condition	Vehicle ON mode
  Test point 1	Electrical compass unit 6P connector No. 5
  Test point 2	Body ground

  Is there less than 0.2 V?

  YES 

  The GND wire is OK. Go to step 8.

  NO 

  Repair an open or high resistance in the wire between the electrical compass unit and body ground (G603).

• 8. Shorted wire check (COMPASS lines):

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

  - 2. Disconnect the following connectors.

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

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

  Is there continuity?

  YES 

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

  NO 

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

• 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 B (20P): disconnected
  	Electrical compass unit 6P connector: disconnected

  Test point 1:  Audio unit connector B (20P) - Refer to: Audio Unit Connector for Inputs and Outputs (With Display Audio)Audio Unit Connector for Inputs and Outputs (With Normal Audio)	Test point 2:  Electrical compass unit 6P connector
  No. 10	No. 1
  No. 9	No. 2
  No. 20	No. 3
  No. 19	No. 4

  Is there continuity?

  YES 

  The COMPASS wires are OK. Go to step 10.

  NO 

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

• 10.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 - Refer to: Audio Unit Removal and Installation (With Display Audio)Audio Unit Removal and Installation (With Normal Audio) .