Page 977 of 4284
Symptom:
*RIGHT FRONT DOOR DOES NOT TRIP VTSS
POSSIBLE CAUSES
CHECK DRBIIItFOR PASSENGER DOOR AJAR RESPONSE
BODY CONTROL MODULE
TEST ACTION APPLICABILITY
1 With the DRBIIIt, read the PASS DOOR AJAR SW status.
Open the passenger door.
Does the DRBIIItdisplay CLOSED?All
Ye s®Replace the Body Control Module.
Perform VTSS VERIFICATION TEST - 1A.
No®Refer to symptom PASSENGER DOOR AJAR CKT OPEN in the
DOOR AJAR category.
Perform VTSS VERIFICATION TEST - 1A.
948
VEHICLE THEFT/SECURITY
Page 978 of 4284
Symptom:
*RIGHT SLIDING DOOR DOES NOT TRIP VTSS
POSSIBLE CAUSES
CHECK DRBIIItFOR RIGHT REAR DOOR AJAR RESPONSE
BODY CONTROL MODULE
TEST ACTION APPLICABILITY
1 With the DRBIIIt, read the RSLIDE DR AJAR SW status.
Open the right sliding door.
Does the DRBIIItdisplay CLOSED?All
Ye s®Replace the Body Control Module.
Perform VTSS VERIFICATION TEST - 1A.
No®Refer to symptom RIGHT SLIDING DOOR AJAR CKT OPEN in
the DOOR AJAR category.
Perform VTSS VERIFICATION TEST - 1A.
949
VEHICLE THEFT/SECURITY
Page 979 of 4284

Symptom:
*VTSS INDICATOR INOPERATIVE
POSSIBLE CAUSES
OPEN VTSS INDICATOR FUSED B(+) SUPPLY
OPEN VTSS LED
VTSS INDICATOR DRIVER CIRCUIT OPEN
BODY CONTROL MODULE INTERNAL MALFUNCTION
TEST ACTION APPLICABILITY
1 Disconnect the Message Center harness connector.
Measure the voltage of the Fused B+ circuit.
Is the voltage above 10.0 volts?All
Ye s®Go To 2
No®Repair the Fused B(+) (Hazard) circuit for an open.
Perform VTSS VERIFICATION TEST - 1A.
2 Disconnect the Message Center harness connector.
With a 12-volt test light connected to 12-volts, connect the test light probe to the
VTSS Indicator Driver circuit.
Turn the ignition on.
With the DRBIIItin Vehicle Theft, actuate the VTSS Indicator lamp.
Does the test light illuminate when the VTSS Indicator lamp is actuated?All
Ye s®Replace the Message Center assembly.
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.
950
VEHICLE THEFT/SECURITY
Page 980 of 4284

Symptom:
*VTSS INDICATOR LAMP INOPERATIVE
POSSIBLE CAUSES
RKE/THATCHAM ALARM MODULE - INTERNAL MALFUNCTION
VTSS INDICATOR SUPPLY CIRCUIT OPEN
OPEN VTSS LED
VTSS INDICATOR DRIVER CIRCUIT OPEN
RKE/THATCHAM ALARM MODULE - INTERNAL MALFUNCTION
TEST ACTION APPLICABILITY
1 With the DRBIIIt, actuate the VTSS INDICATOR LAMP.
Does the VTSS Indicator Lamp flash while actuating.All
Ye s®Replace the RKE/Thatcham Alarm Module.
Perform VTSS VERIFICATION TEST - 1A.
No®Go To 2
2 Disconnect the VTSS Indicator Lamp harness connector.
Measure the voltage of the VTSS Indicator Supply circuit.
Is the voltage above 10.0 volts?All
Ye s®Go To 3
No®Repair the VTSS Indicator Supply circuit for an open.
Perform VTSS VERIFICATION TEST - 1A.
3 Disconnect the VTSS Indicator Lamp harness connector.
With a 12-volt test light connected to 12-volts, connect the test light probe to the
VTSS Indicator Driver circuit.
Turn the ignition on.
With the DRBIIItin Vehicle Theft, actuate the VTSS Indicator lamp.
Does the test light illuminate when the VTSS Indicator lamp is actuated?All
Ye s®Replace the VTSS Indicator LED Lamp.
Perform VTSS VERIFICATION TEST - 1A.
No®Go To 4
4 Disconnect the VTSS Indicator Lamp harness connector.
Disconnect the RKE/Thatcham Alarm Module C1 harness connector.
Measure the resistance of the VTSS Indicator Driver circuit.
Is the resistance below 5.0 ohms?All
Ye s®Replace the RKE/Thatcham Alarm Module.
Perform VTSS VERIFICATION TEST - 1A.
No®Repair the VTSS Indicator Driver circuit for an open.
Perform VTSS VERIFICATION TEST - 1A.
951
VEHICLE THEFT/SECURITY
Page 981 of 4284

Symptom:
*VTSS SIREN INOP
POSSIBLE CAUSES
INTERMITTENT CONDITION
SIREN SIGNAL CONTROL CIRCUIT OPEN
SIREN SIGNAL RETURN CIRCUIT OPEN
SIREN SUPPLY CIRCUIT OPEN
VTSS SIREN
RKE/THATCHAM ALARM MODULE - INTERNAL MALFUNCTION
RKE/THATCHAM ALARM MODULE - INTERNAL MALFUNCTION
RKE/THATCHAM ALARM MODULE - INTERNAL MALFUNCTON
VTSS SIREN - INTERNAL MALFUNCTION
VTSS SIREN - INTERNAL MALFUNCTION
VTSS SIREN - INTERNAL MALFUNCTION
TEST ACTION APPLICABILITY
1 With the DRBIIIt, actuate the VTSS Siren.
Does the Siren sound while actuating?All
Ye s®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.
No®Go To 2
2 Gain access to the VTSS Siren.
Disconnect the VTSS Siren connector.
Turn the ignition on.
Measure the voltage of the Siren Supply circuit (cavity 3) in the VTSS Siren
connector.
Is the voltage above 10.0 volts?All
Ye s®Go To 3
No®Go To 9
3 With the VTSS Siren connector disconnected.
Measure the resistance of the Siren Signal Return circuit to ground.
Is the resistance below 5.0 ohms?All
Ye s®Go To 4
No®Go To 7
952
VEHICLE THEFT/SECURITY
Page 982 of 4284

TEST ACTION APPLICABILITY
4 With the VTSS Siren connector disconnected.
Turn the ignition on.
Measure the voltage of the Siren Signal Control circuit (cavity 2) in the VTSS Siren
connector.
Is the voltage approximately 5.0 volts?All
Ye s®Replace the VTSS Siren.
Perform VTSS VERIFICATION TEST - 1A.
No®Go To 5
5 Gain access to the RKE/Thatcham Alarm Module C1 harness connector.
While back probing, measure the voltage of the Siren Signal Control circuit.
Turn the ignition on.
Is the voltage approximately 5.0 volts?All
Ye s®Go To 6
No®Replace the RKE/Thatcham Alarm Module.
Perform VTSS VERIFICATION TEST - 1A.
6 Disconnect the RKE/Thatcham Alarm Module C1 harness connector.
Measure the resistance of the Siren Signal Control circuit between the RKE/
Thatcham Alarm Module and the VTSS Siren connector.
Is the resistance below 5.0 ohms?All
Ye s®Replace the VTSS Siren.
Perform VTSS VERIFICATION TEST - 1A.
No®Repair the Siren Signal Control circuit for an open.
Perform VTSS VERIFICATION TEST - 1A.
7 Gain access to the RKE/Thatcham Alarm Module C1 harness connector.
While back probing, measure the resistance of the Siren Signal Return circuit.
Is the resistance below 5.0 ohms?All
Ye s®Go To 8
No®Replace the RKE/Thatcham Alarm Module.
Perform VTSS VERIFICATION TEST - 1A.
8 Disconnect the RKE/Thatcham Alarm Module C1 harness connector.
Measure the resistance of the Siren Signal Return circuit between the RKE/
Thatcham Alarm Module and the VTSS Siren connector.
Is the resistance below 5.0 ohms?All
Ye s®Replace the VTSS Siren.
Perform VTSS VERIFICATION TEST - 1A.
No®Repair the Siren Signal Return circuit for an open.
Perform VTSS VERIFICATION TEST - 1A.
9 Gain access to the RKE/Thatcham Alarm Module C1 harness connector.
While back probing, measure the voltage of the Siren Supply circuit.
Turn the ignition on.
Is the voltage above 10.0 volts?All
Ye s®Go To 10
No®Replace the RKE/Thatcham Alarm Module.
Perform VTSS VERIFICATION TEST - 1A.
953
VEHICLE THEFT/SECURITY
*VTSS SIREN INOP ÐContinued
Page 983 of 4284
TEST ACTION APPLICABILITY
10 Disconnect the RKE/Thatcham Alarm Module C1 harness connector.
Measure the resistance of the Siren Supply circuit between the RKE/Thatcham
Alarm Module and the VTSS Siren connector.
Is the resistance below 5.0 ohms?All
Ye s®Replace the VTSS Siren.
Perform VTSS VERIFICATION TEST - 1A.
No®Repair the Siren Supply circuit for an open.
Perform VTSS VERIFICATION TEST - 1A.
954
VEHICLE THEFT/SECURITY
*VTSS SIREN INOP ÐContinued
Page 984 of 4284
Symptom:
*VTSS WILL NOT ARM
POSSIBLE CAUSES
CHECK THE VTSS STATUS
CHECK FOR DTCS AND VTSS ARMING INHIBITORS
BODY CONTROL MODULE
TEST ACTION APPLICABILITY
1 With the DRBIIIt, check that the Theft Alarm is enabled.
Was the Theft Alarm enabled?All
Ye s®Go To 2
No®With the DRBIIIt, enable the Vehicle Theft Security System
(VTSS).
Perform VTSS VERIFICATION TEST - 1A.
2 Ensure the liftgate, and all doors are closed.
With the DRBIIIt, read the active DTC's and the ajar switch states.
Does the DRBIIItdisplay any closed switches or VTSS related DTC's?All
Ye s®Refer to the Symptom List and diagnose the appropriate symp-
tom in the DOOR AJAR or VTSS category.
Perform VTSS VERIFICATION TEST - 1A.
No®Replace the Body Control Module.
Perform VTSS VERIFICATION TEST - 1A.
955
VEHICLE THEFT/SECURITY