Page 617 of 4284
Symptom:
LOOPBACK FAILURE
POSSIBLE CAUSES
EMIC - INTERNAL ERROR
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, record and erase DTC's.
Turn the ignition off, wait 15 seconds, then turn the ignition on.
With the DRBIIIt, read DTCs.
Did the DTC return?All
Ye s®Go To 2
No®Test Complete.
2 If there are no possible causes remaining, view repair. All
Repair
Replace the EMIC.
Perform BODY VERIFICATION TEST - VER 1.
588
INSTRUMENT CLUSTER
Page 618 of 4284
Symptom:
NO ABS BUS MESSAGES RECEIVED
POSSIBLE CAUSES
ATTEMPT TO COMMUNICATE WITH THE ANTI-LOCK BRAKE SYSTEM MODULE
INSTRUMENT CLUSTER
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRB, attempt to communicate with the ABS module.
Was the DRB able to I/D or communicate with the ABS module?All
Ye s®Go To 2
No®Refer to the Communication category for the related symptom(s).
Perform BODY VERIFICATION TEST - VER 1.
2 With the DRB, erase DTC's.
Turn the ignition on and wait approximately 1 minute.
With the DRB, read DTC's.
Did this DTC reset?All
Ye s®Replace the Instrument Cluster.
Perform BODY VERIFICATION TEST - VER 1.
No®Test Complete.
589
INSTRUMENT CLUSTER
Page 619 of 4284
Symptom:
NO BCM BUS MESSAGES RECEIVED
POSSIBLE CAUSES
ATTEMPT TO COMMUNICATE WITH THE BODY CONTROL MODULE
INSTRUMENT CLUSTER
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRB, attempt to communicate with the BCM.
Was the DRB able to I/D or communicate with the BCM?All
Ye s®Go To 2
No®Refer to the Communication category for the related symptom(s).
Perform BODY VERIFICATION TEST - VER 1.
2 With the DRB, erase DTC's.
Turn the ignition on and wait approximately 1 minute.
With the DRB, read DTC's.
Did this DTC reset?All
Ye s®Replace the Instrument Cluster.
Perform BODY VERIFICATION TEST - VER 1.
No®Test Complete.
590
INSTRUMENT CLUSTER
Page 620 of 4284
Symptom:
NO FCM BUS MESSAGES RECEIVED
POSSIBLE CAUSES
ATTEMPT TO COMMUNICATE WITH THE FRONT CONTROL MODULE
INSTRUMENT CLUSTER
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIII, attempt to communicate with the FCM.
Was the DRBIII able to I/D or communicate with the FCM?All
Ye s®Go To 2
No®Refer to the Communication category for the related symptom(s).
Perform BODY VERIFICATION TEST - VER 1.
2 With the DRBIII, erase DTC's.
Turn the ignition on and wait approximately 1 minute.
With the DRBIII, read DTC's.
Did this DTC reset?All
Ye s®Replace the Instrument Cluster.
Perform BODY VERIFICATION TEST - VER 1.
No®Test Complete.
591
INSTRUMENT CLUSTER
Page 621 of 4284
Symptom:
NO ORC BUS MESSAGES RECEIVED
POSSIBLE CAUSES
ATTEMPT TO COMMUNICATE WITH THE OCCUPANT RESTRAINT CONTROLLER
INSTRUMENT CLUSTER
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIII, attempt to communicate with the ORC.
Was the DRBIII able to I/D or communicate with the ORC?All
Ye s®Go To 2
No®Refer to the Communication category for the related symptom(s).
Perform BODY VERIFICATION TEST - VER 1.
2 With the DRBIII, erase DTC's.
Turn the ignition on and wait approximately 1 minute.
With the DRBIII, read DTC's.
Did this DTC reset?All
Ye s®Replace the Instrument Cluster.
Perform BODY VERIFICATION TEST - VER 1.
No®Test Complete.
592
INSTRUMENT CLUSTER
Page 622 of 4284
Symptom:
NO PCM BUS MESSAGES RECEIVED
POSSIBLE CAUSES
PCM MESSAGE NOT RECEIVED
INSTRUMENT CLUSTER
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIII, attempt to communicate with the PCM.
Was the DRBIII able to I/D or communicate with the PCM?All
Ye s®Go To 2
No®Refer to the Communication category for the related symptom(s).
Perform BODY VERIFICATION TEST - VER 1.
2 With the DRBIII, erase DTC's.
Turn the ignition on and wait approximately 1 minute.
With the DRBIII, read DTC's.
Did this DTC reset?All
Ye s®Replace the Instrument Cluster.
Perform BODY VERIFICATION TEST - VER 1.
No®Test Complete.
593
INSTRUMENT CLUSTER
Page 623 of 4284
Symptom:
NO TCM BUS MESSAGES RECEIVED
POSSIBLE CAUSES
ATTEMPT TO COMMUNICATE WITH THE TCM
INSTRUMENT CLUSTER
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIII, attempt to communicate with the Transmission Control Module.
Was the DRBIII able to I/D or communicate with the TCM?All
Ye s®Go To 2
No®Refer to the Communication category for the related symptom(s).
Perform BODY VERIFICATION TEST - VER 1.
2 With the DRBIII, erase DTC's.
Turn the ignition on and wait approximately 1 minute.
With the DRBIII, read DTC's.
Did this DTC reset?All
Ye s®Replace the Instrument Cluster.
Perform BODY VERIFICATION TEST - VER 1.
No®Test Complete.
594
INSTRUMENT CLUSTER
Page 624 of 4284

Symptom:
PANEL DIMMING OUTPUT SHORT
POSSIBLE CAUSES
INTERMITTENT WIRING AND CONNECTORS
EMIC DIMMING CIRCUIT SHORT TO GROUND
HEADLAMP SWITCH DIMMING CIRCUIT SHORT TO GROUND
HVAC MODULE DIMMING CIRCUIT SHORT TO GROUND
I/P MULTI-FUNCTION SWITCH DIMMING CIRCUIT SHORT TO GROUND
MIRROR SWITCH DIMMING CIRCUIT SHORT TO GROUND
RADIO DIMMING CIRCUIT SHORT TO GROUND
REAR BLOWER CONTROL SWITCH DIMMING CIRCUIT SHORT TO GROUND
EMIC
HEADLAMP SWITCH
I/P MULTI-FUNCTION SWITCH
MIRROR SWITCH
RADIO
REAR BLOWER CONTROL SWITCH
BODY CONTROL MODULE
HVAC MODULE
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, record and erase Body Control Module DTC's.
Turn the ignition off, wait 15 seconds, then turn the ignition on.
Turn on the Headlamps.
With the DRBIIIt, read DTCs.
Does the DRBIIItdisplay PANEL DIMMING OUTPUT SHORT?All
Ye s®Go To 2
No®Go To 17
2 Turn the ignition on.
With the DRBIIIt, erase Body Control Module DTCs.
Turn the ignition off to the lock position.
Disconnect the EMIC harness connector.
Turn the ignition on.
Turn the Headlamps on.
With the DRBIIIt, read DTCs.
Does the DRBIIItdisplay PANEL DIMMING OUTPUT SHORT?All
Ye s®Go To 3
No®Replace the EMIC in accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
595
INSTRUMENT CLUSTER