Test A: The Compass Is Inoperative

PINPOINT TEST A: THE COMPASS IS INOPERATIVE

Normal Operation
The compass display (located in the front display interface module [FDIM]) receives battery voltage from the smart junction box (SJB) fuse 14 (10A) through circuit SBP14 (BN/RD). Ground for the compass display (FDIM) is supplied through circuit GD114 (BK/BU). The compass module (located on the interior rear view mirror) provides vehicle directional inputs to the instrument cluster, which sends the compass information to the FDIM over the medium speed controller area network (MS-CAN). The FDIM will display the compass direction according to the information that has been provided by the compass module to the instrument cluster.

B2097 (Compass Module Failure) - sets when the instrument cluster attempts a self-test of the compass module and its associated circuits and a failure results.

U0155 (Lost Communication With Instrument Panel Cluster [IC] Control Module) - sets when the FDIM does not receive any network communication messages over the MS-CAN network between the instrument cluster and the FDIM.

U2013 (Compass Module is Not Responding) - sets when the instrument cluster does not receive any communications from the compass module.

This pinpoint test is intended to diagnose the following:
- Fuses
- Wiring, terminals or connectors
- Compass module
- FDIM (compass display)
- Instrument cluster

A1-A3:

A3-A6:

A6-A8:

A9: