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Electrical Compass Unit Input Test

Disconnect the 7P connector (A) from the electrical compass (B).

Fig 1: Identifying Electrical Compass 7P Connector Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Inspect the connector and socket terminals to be sure they are all making good contact.
- If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system.
- If the terminals look OK, Go to step 3.

Reconnect the connector, and do the following input tests:

If any test indicates a problem, find and correct the cause, then recheck the system.
If all the input tests prove OK, the electrical compass unit must be faulty; replace it (see REARVIEW MIRROR REPLACEMENT

TEST CONDITION REFERENCE CHART

Cavity	Wire	Test Condition	Test: Desired result	Possible cause if desired result is not obtained
2	BLK	In all ignition switch positions	Measure the voltage to ground: There should be less than 0.5 V.	Poor ground (G401) An open or high resistance in the wire
1	YEL/GRN	Ignition switch ON (II)	Measure the voltage to ground: There should be battery voltage.	Blown No. 20 (7.5 A) fuse in the under-dash fuse/relay box An open or high resistance in the wire