DTC 2623: Compass Diag (With Display Audio) (2017)

NOTE: 

• First, check the Vehicle 12 volt battery condition .
• This audio DTC sets when Connection NG is indicated in the electrical compass unit diagnosis (the compass unit icon is red in the System Links).
• Before you troubleshoot, make sure to follow the General Troubleshooting Information - Refer to: How to Troubleshoot the Audio System (With Display Audio) (2017) .
• Check the connectors for poor connections or loose terminals.

1. Problem verification

   -1. Clear the hard error codes.

   - 2. Turn the vehicle to the OFF (LOCK) mode then the ON mode.

   - 3. Check for hard error codes.

   Is DTC 2623 indicated?

   YES 

   The failure is duplicated, go to step 2.

   NO 

   Intermittent failure, the system is OK at this time.

2. Open wire check (IG1 METER line)

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

   - 2. Disconnect the following connector.

   Electrical compass unit 6P connector

   - 3. Turn the vehicle to the ON mode.

   - 4. 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 3.

   NO 

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

3. Open wire check (GND line)

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

   - 2. 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 4.

   NO 

   Repair an open or high resistance in the wire between the electrical compass unit and body ground (G652).

4. Shorted wire check (COMPASS lines) 1

   -1. Disconnect the following connector.

   Audio unit connector J (28P)

   - 2. 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 J (28P): 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. Go to step 5.

5. Shorted wire check (COMPASS lines) 2

   -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 J (28P): disconnected

   Test point 1: Electrical compass unit 6P connector	Test point 2: Electrical compass unit 6P connector
   No. 1	No. 2, No. 3, No. 4
   No. 2	No. 3, No. 4
   No. 3	No. 4

   Is there continuity between any of the terminals?

   YES 

   Repair a short in the wires between the electrical compass unit and the audio unit.

   NO 

   The COMPASS wires are not shorted. Go to step 6.

6. 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 J (28P): disconnected

   Test point 1: Electrical compass unit 6P connector	Test point 2: Audio unit connector J (28P)
   No. 1	No. 24
   No. 2	No. 23
   No. 3	No. 8
   No. 4	No. 7

   Is there continuity?

   YES 

   Replace the electrical compass unit .

   NO 

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