Page 969 of 4284

Symptom:
VEHICLE THEFT ALARM INDICATOR OUTPUT OPEN
When Monitored and Set Condition:
VEHICLE THEFT ALARM INDICATOR OUTPUT OPEN
When Monitored: Continuously with the ignition on.
Set Condition: The BCM has detected an open in the VTSS Indicator Driver circuit.
POSSIBLE CAUSES
INTERMITTENT CONDITION
VTA LAMP FUNCTIONAL TEST
VTSS INDICATOR DRIVER CIRCUIT OPEN
BODY CONTROL MODULE INTERNAL MALFUNCTION
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, erase the current Body Control Module DTC's.
Turn the ignition off, wait 10 seconds then turn the ignition on.
With the DRBIIIt, read the current Body Control Module DTC's.
Does the DRBIIItdisplay: VTA INDICATOR OUTPUT OPEN?All
Ye s®Go To 2
No®The condition that caused this symptom is currently not present.
Inspect the related wiring harness for a possible intermittent
condition.
Perform VTSS VERIFICATION TEST - 1A.
2 With the DRBIIIt, actuate the VTA Indicator Lamp.
Did the VTA Lamp flash on and off during the actuation?All
Ye s®Replace the Body Control Module.
Perform VTSS VERIFICATION TEST - 1A.
No®Go To 3
3 Disconnect the Message Center harness connector.
Disconnect the Body Control Module C4 harness connector.
Measure the resistance of the VTSS Indicator Driver circuit.
Is the resistance below 5.0 ohms?All
Ye s®Replace the Body Control Module.
Perform VTSS VERIFICATION TEST - 1A.
No®Repair the VTSS Indicator Driver circuit for an open.
Perform VTSS VERIFICATION TEST - 1A.
940
VEHICLE THEFT/SECURITY
Page 970 of 4284

Symptom:
VEHICLE THEFT ALARM INDICATOR OUTPUT SHORT
When Monitored and Set Condition:
VEHICLE THEFT ALARM INDICATOR OUTPUT SHORT
When Monitored: Continuously with the ignition on.
Set Condition: The BCM has detected a short to ground in the VTSS Indicator Driver
circuit.
POSSIBLE CAUSES
INTERMITTENT CONDITION
MESSAGE CENTER INTERNAL MALFUNCTION
BODY CONTROL MODULE INTERNAL MALFUNCTION
VTSS INDICATOR DRIVER CIRCUIT SHORTED TO GROUND
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, erase the current Body Control Module DTC's.
Turn the ignition off, wait 10 seconds then turn the ignition on.
With the DRBIIIt, read the current Body Control Module DTC's.
Does the DRBIIItdisplay: VTA INDICATOR OUTPUT OPEN?All
Ye s®Go To 2
No®The condition that caused this symptom is currently not present.
Inspect the related wiring harness for a possible intermittent
condition.
Perform VTSS VERIFICATION TEST - 1A.
2 Disconnect the Body Control Module C4 connector.
Measure the resistance between ground and the VTSS Indicator Driver circuit.
Is the resistance below 5.0 ohms?All
Ye s®Go To 3
No®Replace the Body Control Module.
Perform VTSS VERIFICATION TEST - 1A.
3 Disconnect the Body Control Module C4 connector.
Disconnect the Message Center connector.
Measure the resistance of the VTSS Indicator Driver circuit to ground.
Is the resistance below 5.0 ohms?All
Ye s®Repair the VTSS Indicator Driver circuit for a short to ground.
Perform VTSS VERIFICATION TEST - 1A.
No®Replace the Message Center assembly.
Perform VTSS VERIFICATION TEST - 1A.
941
VEHICLE THEFT/SECURITY
Page 971 of 4284
Symptom:
*ALARM TRIPS ON ITS OWN
POSSIBLE CAUSES
ALARM TRIPPED BY
INTERMITTENT CONDITION
TEST ACTION APPLICABILITY
1 With the DRBIIIt, read the Alarm Tripped By status.
Were there any causes displayed?All
Ye s®Refer to Symptom List for problems related to the component
indicated by the DRBIIIt.
Perform VTSS VERIFICATION TEST - 1A.
No®The condition that caused this symptom is currently not present.
Inspect the related wiring harness for a possible intermittent
condition. Look for any chafed, pierced, pinched or partially
broken wires.
Perform VTSS VERIFICATION TEST - 1A.
942
VEHICLE THEFT/SECURITY
Page 972 of 4284
Symptom:
*HOOD DOES NOT TRIP VTSS
POSSIBLE CAUSES
CHECK DRBIIItFOR HOOD AJAR SWITCH RESPONSE
BODY CONTROL MODULE
TEST ACTION APPLICABILITY
1 With the DRBIIIt, read the HOOD AJAR SW status.
Open the hood.
Does the DRBIIItdisplay CLOSED?All
Ye s®Replace the Body Control Module.
Perform VTSS VERIFICATION TEST - 1A.
No®Refer to symptom HOOD AJAR CKT OPEN in the DOOR AJAR
category.
Perform VTSS VERIFICATION TEST - 1A.
943
VEHICLE THEFT/SECURITY
Page 973 of 4284
Symptom:
*LEFT FRONT DOOR DOES NOT TRIP VTSS
POSSIBLE CAUSES
BODY CONTROL MODULE
CHECK DRBIIItFOR DRIVER DOOR AJAR RESPONSE
TEST ACTION APPLICABILITY
1 With the DRBIIIt, read the DRVR DOOR AJAR SW status.
Open the driver door.
Does the DRBIIItdisplay CLOSED?All
Ye s®Replace the Body Control Module.
Perform VTSS VERIFICATION TEST - 1A.
No®Refer to symptom DRIVER DOOR AJAR CKT OPEN in the
DOOR AJAR category.
Perform VTSS VERIFICATION TEST - 1A.
944
VEHICLE THEFT/SECURITY
Page 974 of 4284
Symptom:
*LEFT SLIDING DOOR DOES NOT TRIP VTSS
POSSIBLE CAUSES
MONITOR DRBIIItFOR LEFT SLIDING DOOR AJAR STATUS
BODY CONTROL MODULE
TEST ACTION APPLICABILITY
1 With the DRBIIIt, read the LSLIDE DR AJAR SW status.
Open the left sliding door.
Does the DRBIIItdisplay the switch state as CLOSED?All
Ye s®Replace the Body Control Module.
Perform VTSS VERIFICATION TEST - 1A.
No®Refer to symptom LEFT SLIDING DOOR AJAR CKT OPEN in
the DOOR AJAR category.
Perform VTSS VERIFICATION TEST - 1A.
945
VEHICLE THEFT/SECURITY
Page 975 of 4284
Symptom:
*LIFTGATE DOES NOT TRIP VTSS
POSSIBLE CAUSES
CHECK DRBIIItFOR LIFTGATE SW RESPONSE
BODY CONTROL MODULE
TEST ACTION APPLICABILITY
1 With the DRBIIIt, read the LIFTGATE AJAR SW status.
Open the liftgate.
Does the DRBIIItdisplay CLOSED?All
Ye s®Replace the Body Control Module.
Perform VTSS VERIFICATION TEST - 1A.
No®Refer to symptom LIFTGATE AJAR CKT OPEN in the DOOR
AJAR category.
Perform VTSS VERIFICATION TEST - 1A.
946
VEHICLE THEFT/SECURITY
Page 976 of 4284

Symptom:
*REPEATER LAMPS INOPERATIVE WITH ALARM
POSSIBLE CAUSES
HAZARD SWITCH SENSE CIRCUIT OPEN
REPEATER LAMPS INOPERATIVE
HAZARD SWITCH SENSE CIRCUIT OPEN
RKE/THATCHAM ALARM MODULE - INTERNAL MALFUNCTION
TEST ACTION APPLICABILITY
1 With the DRBIIIt, actuate the Hazard Lamps.
Do the Hazard Lamps light while actuating?All
Ye s®Go To 2
No®Refer to the appropriate Service Information to repair the Hazard
Lamps.
Perform VTSS VERIFICATION TEST - 1A.
2 Turn the hazard lamp switch on.
Do the Hazard Lamps operate?All
Ye s®Go To 3
No®Repair the Hazard Switch Sense circuit for an open between the
BCM and the splice.
Perform VTSS VERIFICATION TEST - 1A.
3 Gain access to the RKE/Thatcham Alarm Module.
Disconnect the RKE/Thatcham Alarm Module C1 connector.
Connect a jumper wire between cavity 15 of the RKE/Thatcham Alarm Module C1
connector and ground.
Do the hazard lamps light with the jumper wire connected?All
Ye s®Replace the RKE/Thatcham Alarm Module.
Perform VTSS VERIFICATION TEST - 1A.
No®Repair the Hazard Switch Sense circuit for an open between the
RKE/Thatcham Alarm Module and the splice.
Perform VTSS VERIFICATION TEST - 1A.
947
VEHICLE THEFT/SECURITY