Electrical Compass Troubleshooting

NOTE: Check the vehicle battery condition first (see BATTERY TEST ).

Check the No. 10 (7.5A) fuse in the under-dash fuse/relay box.
Is the fuse OK?

YES -Go to step 2.

NO -Replace the fuse, and recheck. If the fuse blows again, check for a short in the No. 10 (7.5A) fuse circuit.
Check that the electrical compass unit 6P connector is properly connected.
Is the connector properly connected?

YES -Go to step 3.

NO -Reconnect the connector, and recheck.
Turn the ignition switch to ON (II).
Measure the voltage between electrical compass unit 6P connector terminal No. 1 and body ground.

Fig 1: Measuring Voltage Between Electrical Compass Unit 6P Connector Terminal No. 1 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage?

YES -Go to step 5.

NO -Repair an open or high resistance in the wire between electrical compass unit 6P connector terminal No. 1 and the No. 10 (7.5A) fuse in the under-dash fuse/relay box.
Measure the voltage between electrical compass unit 6P connector terminal No. 2 and body ground.

Fig 2: Measuring Voltage Between Electrical Compass Unit 6P Connector Terminal No. 2 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there less than 0.2 V?

YES -Go to step 6.

NO -Repair an open or high resistance in the wire between electrical compass unit 6P connector terminal No. 2 and body ground (G601) (see CONNECTOR TO HARNESS INDEX ).
Turn the ignition switch to LOCK (0).
Disconnect audio unit connector D (20P) and the electrical compass 6P connector.

Check for continuity between body ground and the electrical compass unit 6P connector according to the table.

Electrical compass unit connector	Wire color
No. 3	BRN
No. 4	BLU
No. 5	ORN
No. 6	GRY

Fig 3: Checking Continuity Between Body Ground And Electrical Compass Unit 6P Connector Terminals

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

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

NO -Go to step 9.

Check for continuity between the electrical compass unit 6P connector and audio unit connector D (20P) according to the table.

ELECTRICAL COMPASS UNIT 6P CONNECTOR AND AUDIO UNIT CONNECTOR D (20P)

Electrical compass unit connector	Audio unit connector	Wire color
No. 3	D2	BRN
No. 4	D1	BLU
No. 5	D12	ORN
No. 6	D11	GRY

Fig 4: Checking Continuity Between Electrical Compass Unit 6P Connector Terminal No. 3 And 4

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 5: Checking Continuity Between Audio Unit Connector D (20P) Terminal No. 4 And 7

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Substitute a known-good electrical compass unit (see ELECTRICAL COMPASS UNIT REMOVAL/INSTALLATION ), and recheck. If the symptom/Indication goes away, replace the original electrical compass unit (see ELECTRICAL COMPASS UNIT REMOVAL/INSTALLATION ). If the symptom/indication is still present, replace the audio unit (see AUDIO UNIT REMOVAL/INSTALLATION ).

NO -Repair an open in the wire(s) between the electrical compass unit and the audio unit.