Electronic Compass
The compass display and module are contained in the overhead console and are replaced as an assembly. For additional information, refer to Section 501-12 . The compass display can be turned off and on by pressing the MODE button in the overhead console. The vehicle heading is displayed as one of N, NE, E, SE, S, SW, W, or NW.
Inspection and Verification
NOTE: Press the MODE button to turn on the display.
Visual Inspection Chart
Mechanical
Electrical
Pinpoint Test A: The Compass Is Inaccurate/Inoperative
Normal Operation
The compass receives battery voltage from the central junction box (CJB) through circuit 964 (DB/LG). Ground for the compass is supplied through circuit 676 (PK/OG).
Possible Causes
PINPOINT TEST A: THE COMPASS IS INACCURATE/INOPERATIVE
NOTE: Always set the zone and calibrate the compass before replacing an inaccurate compass.
NOTE: After installing a new compass, always set the zone and calibrate.
Test Step
Result / Action to Take
A1 CHECK THE OVERHEAD COMPASS DISPLAY
Yes
GO to A3 .
No
GO to A2 .
A2 CHECK THE COMPASS MODE
Yes
If the compass display turns on correctly, GO to A3 . If the compass display turns on, but the heading is inoperative/inaccurate or the display indicates VAR, GO to A4 . If the compass display turns on, but it does not display all directions, or indicates CAL, GO to A5 .
No
GO to A7 .
A3 CHECK THE COMPASS DIMMING
Yes
TURN the headlamp switch to the OFF position. GO to A4 .
No
TURN the headlamp switch to the OFF position. GO to A8 .
A4 CHECK THE COMPASS ZONE SETTING
Yes
GO to A5 .
No
INSTALL a new overhead console. REFER to Section 501-12 . TEST the system for normal operation.
A5 CALIBRATE THE COMPASS
Yes
GO to A6 .
No
INSTALL a new overhead console. REFER to Section 501-12 . TEST the system for normal operation.
A6 CHECK THE COMPASS ACCURACY
Yes
The compass is OK. REVIEW the operation of the compass with the customer.
No
INSTALL a new overhead console. REFER to Section 501-12 . TEST the system for normal operation.
A7 CHECK THE VOLTAGE SUPPLY TO THE OVERHEAD CONSOLE
Yes
TURN the key to the OFF position. GO to A9 .
No
VERIFY the CJB fuse 15 (7.5A) is OK. If OK, REPAIR the circuit. TEST the system for normal operation.
A8 CHECK THE DIMMING CIRCUIT
Yes
GO to A9 .
No
REFER to Section 413-00 for further diagnosis of the instrument cluster and panel illumination.
A9 CHECK CIRCUIT 676 (PK/OG) FOR OPEN
Yes
INSTALL a new overhead console. REFER to Section 501-12 . TEST the system for normal operation.
No
REPAIR the circuit. TEST the system for normal operation.
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