Pinpoint Test Bi: The Compass Is Inaccurate

NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

NOTE: After installing a new compass module, always set the zone and calibrate the compass.

BI1 CHECK THE COMPASS ZONE ADJUSTMENT
- Carry out the compass zone adjustment procedure. Refer to COMPASS ZONE ADJUSTMENT .
- Does the compass zone set correctly?
  - Yes : GO to BI2.
  - No : INSTALL a new compass module. REFER to Auto-Dimming Interior Mirror in REAR VIEW MIRRORS . SET the zone. REFER to COMPASS ZONE ADJUSTMENT . CALIBRATE the compass. REFER to COMPASS CALIBRATION . TEST the system for normal operation.
BI2 CALIBRATE THE COMPASS
- Carry out the compass calibration adjustment procedure. Refer to COMPASS CALIBRATION .
- Does the compass calibrate correctly?
  - Yes : GO to BI3.
  - No : INSTALL a new compass module. REFER to Auto-Dimming Interior Mirror in REAR VIEW MIRRORS . SET the zone. REFER to COMPASS ZONE ADJUSTMENT . CALIBRATE the compass. REFER to COMPASS CALIBRATION . TEST the system for normal operation.

BI3 CHECK THE COMPASS ACCURACY

Position the vehicle and observe the compass display as follows:

Does the compass display as indicated?
- Yes : The compass is OK. The concern may have been caused by an incorrect zone setting, or the compass was out of calibration.
- No : INSTALL a new compass module. REFER to Auto-Dimming Interior Mirror in REAR VIEW MIRRORS . SET the zone. REFER to COMPASS ZONE ADJUSTMENT . CALIBRATE the compass. REFER to COMPASS CALIBRATION . TEST the system for normal operation.