2001 CHRYSLER VOYAGER Service Manual

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Page 953 of 4284

CHRYSLER VOYAGER 2001 Service Manual Symptom:
HORN RELAY OPEN
When Monitored and Set Condition:
HORN RELAY OPEN
When Monitored: Continuously with the ignition on.
Set Condition: The FCM has detected an open in the Horn Relay Control circ

Page 954 of 4284

CHRYSLER VOYAGER 2001 Service Manual Symptom:
HORN RELAY SHORTED TO BATTERY
When Monitored and Set Condition:
HORN RELAY SHORTED TO BATTERY
When Monitored: Continuously with the ignition on.
Set Condition: The FCM has detected a short to

Page 955 of 4284

CHRYSLER VOYAGER 2001 Service Manual TEST ACTION APPLICABILITY
3 Turn the ignition off.
Disconnect the Front Control Module from the Fuse and Relay Center.
Disconnect the Horn Relay from the Fuse and Relay Center.
Measure the voltage of

Page 956 of 4284

CHRYSLER VOYAGER 2001 Service Manual Symptom:
INTERNAL EEPROM WRITE ERROR
When Monitored and Set Condition:
INTERNAL EEPROM WRITE ERROR
When Monitored: During a EEPROM write event.
Set Condition: If the EEPROM write time exceeds 16ms.
PO

Page 957 of 4284

CHRYSLER VOYAGER 2001 Service Manual Symptom:
INTERNAL TRANSMIT FAILURE
When Monitored and Set Condition:
INTERNAL TRANSMIT FAILURE
When Monitored: Continuously with the ignition on during a message transmission.
Set Condition: After 8 i

Page 958 of 4284

CHRYSLER VOYAGER 2001 Service Manual Symptom:
INTERNAL ULTRASONIC FAULT
When Monitored and Set Condition:
INTERNAL ULTRASONIC FAULT
When Monitored: During the initial 6 seconds of an ignition on cycle.
Set Condition: After 5 consecutive

Page 959 of 4284

CHRYSLER VOYAGER 2001 Service Manual TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, erase the current RKE/Thatcham Alarm Module DTCs.
Turn the ignition off, wait 10 seconds then turn the ignition on.
Cycle the ignit

Page 960 of 4284

CHRYSLER VOYAGER 2001 Service Manual TEST ACTION APPLICABILITY
6 Turn the ignition off.
Measure the resistance of the Sensor Ground circuit at the Rear Intrusion Sensor
connector.
Is the resistance below 5.0 ohms?All
Ye s®Go To 7
No®Go

TEST ACTION APPLICABILITY
6 Turn the ignition off.
Measure the resistance of the Sensor Ground circuit at the Rear Intrusion Sensor
connector.
Is the resistance below 5.0 ohms?All
Ye s®Go To 7
No®Go To 8
7 Replace the Rear Intrusion Sensor with a known good sensor.
Turn the ignition on.
With the DRBIIIt, monitor the Intrusion Sensor.
Does the DRBIIItshow INTRUSION DETECTED?All
Ye s®Replace the Rear Intrusion Sensor.
Perform VTSS VERIFICATION TEST - 1A.
No®Replace the RKE/Thatcham Alarm Module.
Perform VTSS VERIFICATION TEST - 1A.
8 Gain access to the RKE/Thatcham Alarm Module.
Disconnect the RKE/Thatcham Alarm Module C1 connector.
Measure the resistance of the Sensor Ground circuit between the RKE/Thatcham
Alarm Module C1 connector and the Intrusion Sensor connector.
Is the resistance below 5.0 ohms?All
Ye s®Replace the RKE/Thatcham Alarm Module.
Perform VTSS VERIFICATION TEST - 1A.
No®Repair the Rear Sensor Ground circuit for an open.
Perform VTSS VERIFICATION TEST - 1A.
9 Turn the ignition off.
Gain access to the RKE/Thatcham Alarm Module C1 connector.
While back probing, measure the voltage of the Rear Intrusion Sensor Signal circuit.
Turn the ignition on while observing the voltmeter.
NOTE: Voltage will only be present during the first 6 seconds when the
ignition is turned on.
Is the voltage above 10.0 volts when the ignition is initially turned on?All
Ye s®Repair the Rear Intrusion Sensor Signal circuit for an open.
Perform VTSS VERIFICATION TEST - 1A.
No®Replace the RKE/Thatcham Alarm Module.
Perform VTSS VERIFICATION TEST - 1A.
10 Gain access to the RKE/Thatcham Alarm Module.
Disconnect the RKE/Thatcham Alarm Module C1 connector.
Measure the resistance of the Sensor Ground circuit between the RKE/Thatcham
Alarm Module C1 connector and the Intrusion Sensor connector.
Is the resistance below 5.0 ohms?All
Ye s®Replace the RKE/Thatcham Alarm Module.
Perform VTSS VERIFICATION TEST - 1A.
No®Repair the Front Sensor Ground circuit for an open.
Perform VTSS VERIFICATION TEST - 1A.
931
VEHICLE THEFT/SECURITY
INTERNAL ULTRASONIC FAULT ÐContinued

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