ignition CHRYSLER VOYAGER 2001 Service Manual

TEST ACTION APPLICABILITY
2WARNING: DO NOT OPERATE THE DCHA IN AN ENCLOSED AREA SUCH
AS A GARAGE THAT DOES NOT HAVE EXHAUST VENTILATION FACILI-
TIES. ALWAYS VENT THE DCHA's EXHAUST WHEN OPERATING THE
DCHA. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN
PERSONAL INJURY OR DEATH.
WARNING: ALLOW THE DCHA ASSEMBLY TO COOL BEFORE PERFORM-
ING A COMPONENT INSPECTION/REPAIR/REPLACEMENT. FAILURE TO
FOLLOW THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY.
Turn the ignition off.
NOTE: Check connectors - Clean/repair as necessary.
Disconnect the Cabin Heater Assist C1 harness connector.
Turn the ignition on.
Measure the voltage between the Cabin Heater Assist Control circuit and ground.
Is there any voltage present?All
Ye s®Go To 3
No®Replace the FCM in accordance with the Service Information.
Perform CABIN HEATER VERIFICATION TEST - VER 1.
3WARNING: DO NOT OPERATE THE DCHA IN AN ENCLOSED AREA SUCH
AS A GARAGE THAT DOES NOT HAVE EXHAUST VENTILATION FACILI-
TIES. ALWAYS VENT THE DCHA's EXHAUST WHEN OPERATING THE
DCHA. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN
PERSONAL INJURY OR DEATH.
WARNING: ALLOW THE DCHA ASSEMBLY TO COOL BEFORE PERFORM-
ING A COMPONENT INSPECTION/REPAIR/REPLACEMENT. FAILURE TO
FOLLOW THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY.
Turn the ignition off.
Disconnect the battery in accordance with the Service information.
NOTE: Check connectors - Clean/repair as necessary.
Disconnect the IPM C3 harness connector.
NOTE: Check connectors - Clean/repair as necessary.
Disconnect the Cabin Heater Assist C1 and C2 harness connectors.
Measure the resistance between the Cabin Heater Assist Control circuit and the
Fused B(+) circuit.
Is the resistance below 10K ohms?All
Ye s®Repair the Cabin Heater Assist Control circuit for a short to the
Fused B(+) circuit.
Perform CABIN HEATER VERIFICATION TEST - VER 1.
No®Go To 4
330
CABIN HEATER
CABIN HEATER CONTROL CIRCUIT SHORT TO BATTERY (ACTIVE) Ð
Continued

TEST ACTION APPLICABILITY
4WARNING: DO NOT OPERATE THE DCHA IN AN ENCLOSED AREA SUCH
AS A GARAGE THAT DOES NOT HAVE EXHAUST VENTILATION FACILI-
TIES. ALWAYS VENT THE DCHA's EXHAUST WHEN OPERATING THE
DCHA. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN
PERSONAL INJURY OR DEATH.
WARNING: ALLOW THE DCHA ASSEMBLY TO COOL BEFORE PERFORM-
ING A COMPONENT INSPECTION/REPAIR/REPLACEMENT. FAILURE TO
FOLLOW THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY.
Turn the ignition off.
Disconnect the battery in accordance with the Service Information.
Remove the FCM in accordance with the Service Information.
Reconnect the IPM C3 harness connector.
Reconnect the battery in accordance with the Service Information.
Turn the ignition on.
NOTE: Check connectors - Clean/repair as necessary.
Disconnect the Cabin Heater Assist C1 harness connector.
Measure the voltage between the Cabin Heater Assist Control circuit and ground.
Is there any voltage present?All
Ye s®Repair the Cabin Heater Assist Control circuit for a short to
voltage.
Perform CABIN HEATER VERIFICATION TEST - VER 1.
No®Replace the FCM in accordance with the Service Information.
Perform CABIN HEATER VERIFICATION TEST - VER 1.
331
CABIN HEATER
CABIN HEATER CONTROL CIRCUIT SHORT TO BATTERY (ACTIVE) Ð
Continued

Symptom:
*CABIN HEATER INOPERABLE FROM A/C - HEATER MODULE
POSSIBLE CAUSES
DCHA ACTIVATION CRITERIA NOT MET
ATTEMPT TO COMMUNICATE WITH THE FCM AND THE HVAC MODULE
FCM OR HAVC DTCS PRESENT
VERIFY DCHA IS INOPERABLE FROM A/C - HEATER MODULE
A/C - HEATER CONTROL MODULE FAULT
TEST ACTION APPLICABILITY
1WARNING: DO NOT OPERATE THE DCHA IN AN ENCLOSED AREA SUCH
AS A GARAGE THAT DOES NOT HAVE EXHAUST VENTILATION FACILI-
TIES. ALWAYS VENT THE DCHA's EXHAUST WHEN OPERATING THE
DCHA. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN
PERSONAL INJURY OR DEATH.
CAUTION: DO NOT PERFORM THIS TEST UNLESS DIRECTED HERE BY
THE CABIN HEATER PRE-TEST. ALWAYS PERFORM THE CABIN HEATER
PRE-TEST PRIOR TO PERFORMING ANY OTHER CABIN HEATER TEST
FOR THE RESULT TO BE VALID.
Verify that all of the following criteria was met during the attempt to activate the
DCHA from the A/C - Heater Control Module.
The engine was running.
The engine coolant temperature was below 66ÉC (151ÉF).
The vehicle's fuel tank had more than 1/8 of a tank of fuel.
The A/C - Heater Control Module's Power switch was on.
The Blend Control was set above 95% reheat.
Was all criteria met during the attempt to activate the DCHA from the A/C - Heater
Control Module?All
Ye s®Go To 2
No®Attempt to activate the DCHA when all of the operating criteria
are met.
Perform CABIN HEATER VERIFICATION TEST - VER 1.
2WARNING: DO NOT OPERATE THE DCHA IN AN ENCLOSED AREA SUCH
AS A GARAGE THAT DOES NOT HAVE EXHAUST VENTILATION FACILI-
TIES. ALWAYS VENT THE DCHA's EXHAUST WHEN OPERATING THE
DCHA. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN
PERSONAL INJURY OR DEATH.
Turn the ignition on.
With the DRBIIIt, attempt to communicate with the FCM and the HVAC Module.
Was the DRBIIItable to communicate with the FCM and the HVAC Module?All
Ye s®Go To 3
No®Refer to Communication for the related symptom(s)
Perform CABIN HEATER VERIFICATION TEST - VER 1.
332
CABIN HEATER

TEST ACTION APPLICABILITY
3WARNING: DO NOT OPERATE THE DCHA IN AN ENCLOSED AREA SUCH
AS A GARAGE THAT DOES NOT HAVE EXHAUST VENTILATION FACILI-
TIES. ALWAYS VENT THE DCHA's EXHAUST WHEN OPERATING THE
DCHA. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN
PERSONAL INJURY OR DEATH.
Turn the ignition on.
With the DRBIIIt, check for FCM and HVAC DTCs.
Does the DRBIIItdisplay any FCM or HVAC DTCs?All
Ye s®For FCM DTCs, return to the symptom list and choose the
symptom(s). Also, refer to Intelligent Power Module for related
symptom(s). For HVAC DTCs, refer to Heater & A/C for related
symptom(s).
Perform CABIN HEATER VERIFICATION TEST - VER 1.
No®Go To 4
4WARNING: DO NOT OPERATE THE DCHA IN AN ENCLOSED AREA SUCH
AS A GARAGE THAT DOES NOT HAVE EXHAUST VENTILATION FACILI-
TIES. ALWAYS VENT THE DCHA's EXHAUST WHEN OPERATING THE
DCHA. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN
PERSONAL INJURY OR DEATH.
Start the engine.
Allow the engine to idle.
Turn the A/C - Heater Control Module's Power switch on.
Turn the Blower switch to the high speed position.
CAUTION: Do not activate the Diesel Cabin Heater Test with the engine off.
Failure to follow these instructions may result in internal damage to the
DCHA Heater Module.
NOTE: Do not disconnect the vehicle's battery or the DCHA's main power
supply while the DCHA is in operation or in run-down mode. Failure to
follow these instructions may result in excess emissions from the DCHA
during heater operation.
With the DRBIIItin HVAC, Systems Tests, select Diesel Cabin Heater Test and press
#1.
With the DRBIIItin HVAC, Systems Tests, Diesel Cabin Heater Test, read the Cabin
Heater Status.
Does the Status display: On?All
Ye s®Replace the FCM in accordance with the Service Information.
Perform CABIN HEATER VERIFICATION TEST - VER 1.
No®Replace the A/C - Heater Control Module in accordance with the
Service Information.
Perform CABIN HEATER VERIFICATION TEST - VER 1.
333
CABIN HEATER
*CABIN HEATER INOPERABLE FROM A/C - HEATER MODULE Ð
Continued

Symptom:
*KEY IN IGNITION AND DRIVER'S DOOR OPEN CHIME NOT
OPERATING PROPERLY
POSSIBLE CAUSES
DRIVER DOOR AJAR STATUS
IGNITION SWITCH
BODY CONTROL MODULE
TEST ACTION APPLICABILITY
1 Open the driver door.
With the DRB, in Input/Outputs, read the9DR DOOR AJAR SW9state.
Does the DRB display9DR DOOR AJAR SW: CLOSED9?All
Ye s®Go To 2
No®Refer to symptom list for problems related to Door Ajar.
Perform BODY VERIFICATION TEST - VER 1.
2 With the DRBIIItin Inputs/Outputs, read the Key in Ign Sw state while inserting
the key in and out of the ignition switch.
Does the DRBIIItdisplay change from open to closed?All
Ye s®Replace and program the Body Control Module in accordance
with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
No®Check the Ignition Lock Cylinder for damage. If OK replace the
Ignition Switch.
Perform BODY VERIFICATION TEST - VER 1.
336
CHIME

Symptom:
ATC MESSAGES NOT RECEIVED
When Monitored and Set Condition:
ATC MESSAGES NOT RECEIVED
When Monitored: With the ignition in run, and the IOD fuse installed.
Set Condition: The BCM does not receive any messages from the Automatic Temperature
Control (ATC) module for at least 0.125 seconds.
POSSIBLE CAUSES
ATTEMPT TO COMMUNICATE WITH THE AUTOMATIC TEMPERATURE CONTROL MODULE
BODY CONTROL MODULE
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRB, enter Body then Automatic Temp Control.
Was the DRB able to I/D or communicate with the ATC?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.
Cycle the ignition switch from off to on and wait approximately 1 minute.
With the DRB, read DTC's.
Did this DTC reset?All
Ye s®Replace the Body Control Module.
Perform BODY VERIFICATION TEST - VER 1.
No®Test Complete.
338
COMMUNICATION

Symptom:
AUDIO MESSAGES NOT RECEIVED
When Monitored and Set Condition:
AUDIO MESSAGES NOT RECEIVED
When Monitored: With the ignition in run, and the IOD fuse installed.
Set Condition: The BCM does not receive any messages from the radio for at least 5
seconds.
POSSIBLE CAUSES
ATTEMPT TO COMMUNICATE WITH THE RADIO
BODY CONTROL MODULE
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRB, attempt to communicate with the Radio.
Was the DRB able to I/D or communicate with the Radio?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.
Cycle the ignition switch from off to on and wait approximately 1 minute.
With the DRB, read DTC's.
Did this DTC reset?All
Ye s®Replace the Body Control Module.
Perform BODY VERIFICATION TEST - VER 1.
No®Test Complete.
339
COMMUNICATION

Symptom:
COUNTRY CODE NOT PROGRAMMED
POSSIBLE CAUSES
SELECT CORRECT COUNTRY CODE
TEST ACTION APPLICABILITY
1 With the DRB, enter Body Computer, Miscellaneous then Change Country Code.
Select the correct country code for the vehicle.
With the DRB, erase BCM DTC's.
Cycle the ignition switch from off to on and wait approximately 1 minute.
With the DRB, read BCM DTC's.
Did this DTC reset?All
Ye s®Replace the Body Control Module.
Perform BODY VERIFICATION TEST - VER 1.
No®Test Complete.
342
COMMUNICATION

Symptom:
FCM MESSAGES NOT RECEIVED
When Monitored and Set Condition:
FCM MESSAGES NOT RECEIVED
When Monitored: With the ignition in run, and the IOD fuse installed.
Set Condition: The BCM does not receive any messages from the Front Control Module
(FCM) for at least 5 seconds.
POSSIBLE CAUSES
ATTEMPT TO COMMUNICATE WITH THE FRONT CONTROL MODULE
BODY CONTROL MODULE
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRB, attempt to communicate with the FCM.
Was the DRB 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 DRB, erase DTC's.
Cycle the ignition switch from off to on and wait approximately 1 minute.
With the DRB, read DTC's.
Did this DTC reset?All
Ye s®Replace the Body Control Module.
Perform BODY VERIFICATION TEST - VER 1.
No®Test Complete.
343
COMMUNICATION

Symptom:
FCM, BCM COMMUNICATION FAULT
When Monitored and Set Condition:
FCM, BCM COMMUNICATION FAULT
When Monitored: With the ignition in run, and the IOD fuse installed.
Set Condition: The FCM does not receive any messages from the Body Control Module
(BCM) for at least 5 seconds.
POSSIBLE CAUSES
ATTEMPT TO COMMUNICATE WITH THE BCM
FRONT CONTROL MODULE
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.
Cycle the ignition switch from off to on and wait approximately 1 minute.
With the DRB, read DTC's.
Did this DTC reset?All
Ye s®Replace the Front Control Module.
Perform BODY VERIFICATION TEST - VER 1.
No®Test Complete.
344
COMMUNICATION