ESP CHRYSLER VOYAGER 2001 Repair Manual

Symptom:
*BUS +/- SIGNALS OPEN OR NO RESPONSE FROM BODY CON-
TROL MODULE
POSSIBLE CAUSES
ATTEMPT TO COMMUNICATE WITH ANOTHER MODULE
FUSED (B+) CKT OPEN
OPEN GROUND CIRCUIT(S)
OPEN PCI BUS CIRCUIT
BODY CONTROL MODULE
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRB, attempt to communicate with the Airbag Control Module (ACM).
With the DRB, attempt to communicate with the Controller Antilock Brake (CAB)
module.
Was the DRB able to I/D or communicate with the ACM and the CAB?All
Ye s®Go To 2
No®Refer to symptom list for problems related to the PCI Bus
Communication Failure.
Perform BODY VERIFICATION TEST - VER 1.
2 Turn the ignition off.
Disconnect the BCM C2 harness connector.
Using a 12-volt test light connected to ground, probe the Fused B+ circuit.
Is the test light illuminated?All
Ye s®Go To 3
No®Check fuse #14 in the IPM for an open. If ok, repair the Fused B+
circuit for an open or short. Refer to the wiring diagrams in the
service information.
Perform BODY VERIFICATION TEST - VER 1.
3 Turn the ignition off.
Disconnect the BCM C2 harness connector.
Measure the resistance between ground and both Ground circuits.
Is the resistance below 10.0 ohms for each measurement?All
Ye s®Go To 4
No®Repair the Ground circuit(s) for an open.
Perform BODY VERIFICATION TEST - VER 1.
379
COMMUNICATION

TEST ACTION APPLICABILITY
4Note: Ensure there is PCI Bus communication with other modules on the
vehicle before proceeding. If not, refer to the symptom list from the menu
and repair as necessary.
Disconnect the BCM C3 harness connector.
Use Scope input cable CH7058, Cable to Probe adapter CH7062, and the red and
black test probes.
Connect the scope input cable to the channel one connector on the DRB. Attach the
red and black leads and the cable to probe adapter to the scope input cable.
Select DRB Standalone.
Select lab scope.
Select Live Data.
Select 12 volt square wave.
Press F2 for Scope.
Press F2 and use the down arrow to set voltage range to 20 volts. Press F2 again
when complete.
Connect the Black lead to the chassis ground. Connect the Red lead to the PCI Bus
circuit in the BCM connector.
Turn the ignition on.
Observe the voltage display on the DRB Lab Scope.
Does the voltage pulse from 0 to approximately 7.5 volts?All
Ye s®Go To 5
No®Repair the PCI Bus circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
5 If there are no possible causes remaining, view repair. All
Repair
Replace the Body Control Module.
Perform BODY VERIFICATION TEST - VER 1.
380
COMMUNICATION
*BUS +/- SIGNALS OPEN OR NO RESPONSE FROM BODY CONTROL
MODULE Ð
Continued

Symptom:
*BUS +/- SIGNALS OPEN OR NO RESPONSE FROM HVAC
POSSIBLE CAUSES
ATTEMPT TO COMMUNICATE WITH THE BCM
GROUND CIRCUIT OPEN
IGNITION SWITCH CIRCUIT OPEN
OPEN PCI BUS CIRCUIT
A/C HEATER CONTROL
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRB, enter Body then Body Computer.
Was the DRB able to I/D or communicate with the BCM?All
Ye s®Go To 2
No®Refer to the symptom list for problems related to no communica-
tion with the BCM.
Perform BODY VERIFICATION TEST - VER 1.
2 Turn the ignition off.
Disconnect the A/C Heater Control C1 harness connector.
Measure the resistance between ground and the ground circuit.
Is the resistance below 5.0 ohms?All
Ye s®Go To 3
No®Repair the Ground circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
3 Turn the ignition off.
Disconnect the A/C Heater Control C1 harness connector.
Turn the ignition on.
Using a 12-volt test light connected to ground, probe the Ignition Switch circuit.
Is the test light illuminated?All
Ye s®Go To 4
No®Repair the Ignition Switch circuit for an open or short.
Perform BODY VERIFICATION TEST - VER 1.
381
COMMUNICATION

TEST ACTION APPLICABILITY
4Note: Ensure there is PCI Bus communication with other modules on the
vehicle before proceeding. If not, refer to the symptom list from the menu
and repair as necessary.
Disconnect the A/C Heater Control C1 harness connector.
Use Scope input cable CH7058, Cable to Probe adapter CH7062, and the red and
black test probes.
Connect the scope input cable to the channel one connector on the DRB. Attach the
red and black leads and the cable to probe adapter to the scope input cable.
Select DRB Standalone.
Select lab scope.
Select Live Data.
Select 12 volt square wave.
Press F2 for Scope.
Press F2 and use the down arrow to set voltage range to 20 volts. Press F2 again
when complete.
Connect the Black lead to the chassis ground. Connect the Red lead to the PCI Bus
circuit in the A/C Heater Control connector.
Turn the ignition on.
Observe the voltage display on the DRB Lab Scope.
Does the voltage pulse from 0 to approximately 7.5 volts?All
Ye s®Go To 5
No®Repair the PCI Bus circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
5 If there are no possible causes remaining, view repair. All
Repair
Replace the A/C Heater Control.
Perform BODY VERIFICATION TEST - VER 1.
382
COMMUNICATION
*BUS +/- SIGNALS OPEN OR NO RESPONSE FROM HVAC ÐContinued

Symptom:
*BUS +/- SIGNALS OPEN OR NO RESPONSE FROM INSTRUMENT
CLUSTER
POSSIBLE CAUSES
ATTEMPT TO COMMUNICATE WITH THE BCM
OPEN GROUND CIRCUIT
OPEN FUSED B+ CIRCUIT
OPEN PCI BUS CIRCUIT
INSTRUMENT CLUSTER WAKE UP SENSE CKT OPEN
INSTRUMENT CLUSTER WAKE UP SENSE CKT INTERNALLY OPEN
INSTRUMENT CLUSTER WAKE UP SENSE CKT SHORTED TO VOLTAGE
INSTRUMENT CLUSTER WAKE UP SENSE CKT INTERNALLY SHORTED TO VOLTAGE
INSTRUMENT CLUSTER
BODY CONTROL MODULE
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRB, enter Body then Body Computer.
Was the DRB able to I/D or communicate with the BCM?All
Ye s®Go To 2
No®Refer to the symptom list for problems related to no communica-
tion with the BCM.
Perform BODY VERIFICATION TEST - VER 1.
2 Turn the ignition off.
Turn all lights off.
Disconnect the Instrument Cluster harness connector.
Measure the resistance between ground and both ground circuits.
Is the resistance below 10.0 ohms?All
Ye s®Go To 3
No®Repair the ground circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
3 Turn the ignition off.
Disconnect the Instrument Cluster harness connector.
Using a 12-volt test light connected to ground, probe the Fused B+ circuit.
Is the test light illuminated?All
Ye s®Go To 4
No®Repair the Fused B+ circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
383
COMMUNICATION

TEST ACTION APPLICABILITY
4Note: Ensure there is PCI Bus communication with other modules on the
vehicle before proceeding. If not, refer to the symptom list from the menu
and repair as necessary.
Disconnect the Instrument Cluster harness connector.
Use Scope input cable CH7058, Cable to Probe adapter CH7062, and the red and
black test probes.
Connect the scope input cable to the channel one connector on the DRB. Attach the
red and black leads and the cable to probe adapter to the scope input cable.
With the DRBIIItselect Pep Module Tools.
Select lab scope.
Select Live Data.
Select 12 volt square wave.
Press F2 for Scope.
Press F2 and use the down arrow to set voltage range to 20 volts. Press F2 again
when complete.
Connect the Black lead to the chassis ground. Connect the Red lead to the PCI Bus
circuit in the Instrument Cluster connector.
Turn the ignition on.
Observe the voltage display on the DRB Lab Scope.
Does the voltage pulse from 0 to approximately 7.5 volts?All
Ye s®Go To 5
No®Repair the PCI Bus circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
5 Turn the ignition off.
Reconnect the Instrument Cluster harness connector.
Disconnect the BCM C4 harness connector.
Turn the ignition on.
Measure the voltage of the Instrument Cluster Wake Up Sense circuit in the BCM C4
connector.
Is the voltage above 10.0 volts?All
Ye s®Go To 6
No®Go To 9
6 Turn the ignition off.
Disconnect the BCM C4 harness connector.
Turn the ignition on.
Using a 12-volt test light connected to ground, probe the Instrument Cluster Wake
Up Sense circuit.
Is the test light illuminated?All
Ye s®Go To 7
No®Go To 8
384
COMMUNICATION
*BUS +/- SIGNALS OPEN OR NO RESPONSE FROM INSTRUMENT CLUS-
TER Ð
Continued

TEST ACTION APPLICABILITY
7 Turn the ignition off.
Disconnect the BCM C4 harness connector.
Disconnect the Instrument Cluster harness connector.
Turn the ignition on.
Using a 12-volt test light connected to ground, probe the Instrument Cluster Wake
Up Sense circuit.
Is the test light illuminated?All
Ye s®Repair the Instrument Cluster Wake Up Sense circuit for a short
to voltage.
Perform BODY VERIFICATION TEST - VER 1.
No®Replace the Instrument Cluster.
Perform BODY VERIFICATION TEST - VER 1.
8 Turn the ignition off.
Reconnect the BCM C4 harness connector.
Disconnect the Instrument Cluster harness connector.
Measure the resistance between ground and the Instrument Cluster Wake Up Sense
circuit at the Instrument Cluster connector.
Open and close a door. This is done to ensure the BCM is awake.
Is the resistance below 50.0 ohms?All
Ye s®Replace the Instrument Cluster.
Perform BODY VERIFICATION TEST - VER 1.
No®Replace the Body Control Module.
Perform BODY VERIFICATION TEST - VER 1.
9 Turn the ignition off.
Disconnect the Instrument Cluster harness connector.
Disconnect the BCM C4 harness connector.
Measure the resistance of the Instrument Cluster Wake Up Sense circuit between the
BCM C4 connector and the MIC connector.
Is the resistance below 5.0 ohms?All
Ye s®Replace the Instrument Cluster.
Perform BODY VERIFICATION TEST - VER 1.
No®Repair the Instrument Cluster Wake Up Sense circuit for an
open.
Perform BODY VERIFICATION TEST - VER 1.
385
COMMUNICATION
*BUS +/- SIGNALS OPEN OR NO RESPONSE FROM INSTRUMENT CLUS-
TER Ð
Continued

Symptom:
*BUS +/- SIGNALS OPEN OR NO RESPONSE FROM LEFT SLIDING
DOOR CONTROL MODULE
POSSIBLE CAUSES
FUSED B(+) CIRCUIT OPEN
LEFT SLIDING DOOR WAKE UP SIGNAL WIRE OPEN
LEFT SLIDING DOOR WAKE UP SIGNAL WIRE SHORT TO VOLTAGE
GROUND CIRCUIT OPEN
LEFT SLIDING DOOR WAKE UP SIGNAL WIRE SHORT TO GROUND
PCI BUS CIRCUIT OPEN
BODY CONTROL MODULE - LEFT SLIDING DOOR WAKE UP GROUND OPEN
LEFT SLIDING DOOR CONTROL MODULE - OPEN
TEST ACTION APPLICABILITY
1Note: Ensure there is PCI Bus communication with other modules on the
vehicle before proceeding. If not, refer to the symptom list from the menu
and repair as necessary.
Disconnect the Left Sliding Door Control Module C1 connector.
Measure the voltage between Fused B(+) circuit and ground.
Is the voltage above 10.0 volts?All
Ye s®Go To 2
No®Repair the Fused B(+) circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
2Note: Ensure there is PCI Bus communication with other modules on the
vehicle before proceeding. If not, refer to the symptom list from the menu
and repair as necessary.
Disconnect the Left Sliding Door Control Module C1 connector.
Using a 12-volt test light connected to 12-volts, check the Ground circuit.
Does the test light illuminate brightly?All
Ye s®Go To 3
No®Repair the Ground circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
386
COMMUNICATION

TEST ACTION APPLICABILITY
3Note: Ensure there is PCI Bus communication with other modules on the
vehicle before proceeding. If not, refer to the symptom list from the menu
and repair as necessary.
Disconnect the Left Sliding Door Control Module C2 connector.
Use Scope input cable CH7058, Cable to Probe adapter CH7062, and the red and
black test probes.
Connect the scope input cable to the channel one connector on the DRB. Attach the
red and black leads and the cable to probe adapter to the scope input cable.
Select DRB Standalone.
Select lab scope.
Select Live.
Select 12 volt square wave.
Press F2 for Scope.
Press F2 and use the down arrow to set voltage range to 20 volts. Press F2 again
when complete.
Connect the Black lead to the chassis ground. Connect the Red lead to the PCI Bus
circuit in the Left Sliding Door Control Module C2 connector.
Turn the ignition on.
Observe the voltage display on the DRB Lab Scope.
Does the voltage pulse from 0 to approximately 7.5 volts?All
Ye s®Go To 4
No®Repair the PCI Bus circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
4 Disconnect the Left Sliding Door Control Module C2 connector.
Turn the ignition on.
Measure the resistance between ground and the Left Sliding Door Wake Up Signal
circuit.
Is the resistance below 50.0 ohms?All
Ye s®Go To 5
No®Go To 8
5 Disconnect the Body Control Module C3 connector.
Disconnect the Left Sliding Door Module C2 connector.
Measure the voltage between the Left Sliding Door Wake Up Signal circuit and
ground.
Is there any voltage present?All
Ye s®Repair the Left Sliding Door Wake Up Signal wire for a short to
voltage.
Perform BODY VERIFICATION TEST - VER 1.
No®Go To 6
6 Disconnect the Body Control Module C3 connector.
Disconnect the Left Sliding Door Control Module C2 connector.
Measure the resistance between the Left Sliding Door Wake Up Signal circuit and
ground.
Is the resistance below 100.0 ohmsAll
Ye s®Repair the Left Sliding Door Wake Up Signal wire for a short to
ground.
Perform BODY VERIFICATION TEST - VER 1.
No®Go To 7
387
COMMUNICATION
*BUS +/- SIGNALS OPEN OR NO RESPONSE FROM LEFT SLIDING
DOOR CONTROL MODULE Ð
Continued

TEST ACTION APPLICABILITY
7 If there are no possible causes remaining, view repair. All
Repair
Replace the Left Sliding Door Control Module.
Perform BODY VERIFICATION TEST - VER 1.
8 Disconnect the Body Control Module C3 connector.
Disconnect the Left Sliding Door Control Module C2 connector.
Measure the resistance of the Left Sliding Door Wake Up Signal circuit between the
BCM C3 connector and the Left Sliding Door Control Module C2 connector.
Is the resistance below 5.0 ohmsAll
Ye s®Replace the Body Control Module.
Perform BODY VERIFICATION TEST - VER 1.
No®Repair the Left Sliding Door Wake Up Signal wire for an open.
Perform BODY VERIFICATION TEST - VER 1.
388
COMMUNICATION
*BUS +/- SIGNALS OPEN OR NO RESPONSE FROM LEFT SLIDING
DOOR CONTROL MODULE Ð
Continued