diagram CHRYSLER VOYAGER 2001 User Guide

Symptom List:
NBS OUTPUT 1 SHORT TO BATT
NBS OUTPUT 2 SHORT TO BATT
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be NBS OUTPUT 1 SHORT TO
BATT.
When Monitored and Set Condition:
NBS OUTPUT 1 SHORT TO BATT
When Monitored: With the ignition on and the Radio on.
Set Condition: The FCM detects excessive current when attempting to close the NBS
relay.
NBS OUTPUT 2 SHORT TO BATT
When Monitored: With the ignition on and the Radio on.
Set Condition: The FCM detects excessive current when attempting to close the NBS
relay.
POSSIBLE CAUSES
CHECK DTCS
NBS RELAY SHORTED
NBS RELAY CONTROL CIRCUIT SHORTED TO BATTERY
FRONT CONTROL MODULE
TEST ACTION APPLICABILITY
1 Turn the ignition on.
Turn the Radio on.
NOTE: If neither DTC will reset or is active, refer to the wiring diagrams
located in the service information to help isolate a possible intermittent
condition.
With the DRB, read the FCM DTC's.
Are both the NBS Output 1 Short to Batt and the NBS Output 2 Short to Batt DTC's
set?All
Ye s®Go To 2
No®Replace the Front Control Module in accordance with the Service
Information.
Perform BODY VERIFICATION TEST - VER 1.
209
AUDIO

Symptom:
REAR OUTPUT SHORT
When Monitored and Set Condition:
REAR OUTPUT SHORT
When Monitored: Ignition in RUN and IOD fuse installed.
Set Condition: The radio has sensed a short on the rear output for more than 10 seconds.
POSSIBLE CAUSES
DETERMINE FAULT
LEFT REAR PILLAR SPEAKER
LEFT REAR SPEAKER
RIGHT REAR PILLAR SPEAKER
RIGHT REAR SPEAKER
(+) CIRCUIT SHORTED TO GROUND
(-) CIRCUIT SHORTED TO GROUND
SPEAKER (+) & (-) CIRCUITS SHORTED TOGETHER
SPEAKER SECTION OF RADIO
TEST ACTION APPLICABILITY
1 Turn the ignition on.
Turn the Radio on.
With the DRBIIIt, erase the audio DTC's.
Cycle the ignition switch from off to on and wait 10 seconds.
With the DRBIIIt, read the audio DTC's.
Does the DRBIIItdisplay REAR OUTPUT SHORT?All
Ye s®Go To 2
No®Refer to the wiring diagrams located in the service information to
help isolate a possible intermittent short.
Perform BODY VERIFICATION TEST - VER 1.
2NOTE: If vehicle is not equipped with this speaker, answer Yes to the
question.
Turn the ignition off.
Disconnect the Left Rear Pillar Speaker harness connector.
Turn the ignition on.
Turn the radio on.
With the DRBIIIt, erase the audio DTCs.
Cycle the ignition switch from off to on and wait 10 seconds.
With the DRBIIIt, read DTC's.
Does the DRBIIItdisplay REAR OUTPUT SHORT?All
Ye s®Go To 3
No®Replace the Left Rear Pillar Speaker.
Perform BODY VERIFICATION TEST - VER 1.
214
AUDIO

Symptom:
REMOTE RADIO SWITCH OPEN OR *REMOTE RADIO CONTROLS
INOPERATIVE
When Monitored and Set Condition:
REMOTE RADIO SWITCH OPEN OR *REMOTE RADIO CONTROLS INOPERA-
TIVE
When Monitored: With the ignition on.
Set Condition: The BCM senses voltage above 4.90 volts on its radio control mux input for
longer than 10 seconds.
POSSIBLE CAUSES
INTERMITTENT CONDITION
OPEN CLOCKSPRING
OPEN RADIO CONTROL MUX CIRCUIT
OPEN RADIO CONTROL MUX RETURN CIRCUIT
BODY CONTROL MODULE
TEST ACTION APPLICABILITY
1 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®Go To 2
No®Refer to the wiring diagrams located in the service information to
help isolate a possible intermittent open.
Perform BODY VERIFICATION TEST - VER 1.
2 Turn the ignition off.
Disconnect the Clockspring C1 harness connector.
Turn the ignition on.
Connect a jumper wire between the Radio Control MUX circuit and the Radio Control
MUX Return circuit at the Clockspring C1 connector.
With the DRB, enter Body Computer then Sensors and monitor the Radio Control SW
voltage.
Is the voltage approximately 0.0 volts?All
Ye s®Check the circuits between the clockspring connector and the
splice for an open. If ok, replace the Clockspring.
Perform BODY VERIFICATION TEST - VER 1.
No®Go To 3
217
AUDIO

Symptom:
REMOTE RADIO SWITCH STUCK
When Monitored and Set Condition:
REMOTE RADIO SWITCH STUCK
When Monitored: With the ignition on.
Set Condition: The code will set if the BCM detects a stuck switch or a short to ground on
the Radio Control MUX circuit for more than 10 seconds.
POSSIBLE CAUSES
INTERMITTENT CONDITION
LEFT REMOTE RADIO SWITCH SHORTED TO GROUND
RIGHT REMOTE RADIO SWITCH SHORTED TO GROUND
RADIO CONTROL MUX CIRCUIT SHORTED TO GROUND AT THE SWITCH
RADIO CONTROL MUX CIRCUIT SHORTED TO THE RETURN CIRCUIT AT THE SWITCH
CLOCKSPRING SHORTED TO GROUND
RADIO CONTROL MUX CIRCUIT SHORTED TO GROUND
RADIO CONTROL MUX CKT SHORTED TO THE RADIO CONTROL MUX RETURN CKT
BODY CONTROL MODULE
TEST ACTION APPLICABILITY
1 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®Go To 2
No®Refer to the wiring diagrams located in the service information to
help isolate a possible intermittent short.
Perform BODY VERIFICATION TEST - VER 1.
2WARNING: Turn the ignition off, disconnect the battery and wait 2 minutes
before proceeding.
CAUTION: Do not place an intact undeployed airbag module face down on
a hard surface, the airbag module will propel into the air if accidently
deployed.
Remove the Driver Airbag Module.
Disconnect the Left Remote Radio Switch harness connector.
Turn the ignition on, reconnect the battery.
With the DRB, enter Body Computer then Sensors and monitor the Radio Control SW
voltage
Is the voltage approximately 5.0 volts?All
Ye s®Replace the Left Remote Radio Switch.
Perform BODY VERIFICATION TEST - VER 1.
No®Go To 3
219
AUDIO

Symptom:
RIGHT OUTPUT SHORT
When Monitored and Set Condition:
RIGHT OUTPUT SHORT
When Monitored: Ignition in RUN and IOD fuse installed.
Set Condition: The radio has sensed a short on the right output for more than 10 seconds.
POSSIBLE CAUSES
DETERMINE FAULT
RIGHT I/P SPEAKER
RIGHT FRONT DOOR SPEAKER
RIGHT REAR PILLAR SPEAKER
RIGHT REAR SPEAKER
(+) CIRCUIT SHORTED TO GROUND
(-) CIRCUIT SHORTED TO GROUND
SPEAKER (+) & (-) CIRCUITS SHORTED TOGETHER
SPEAKER SECTION OF RADIO
TEST ACTION APPLICABILITY
1 Turn the ignition on.
Turn the Radio on.
With the DRBIIIt, erase the audio DTC's.
Cycle the ignition switch from off to on and wait 10 seconds.
With the DRBIIIt, read the audio DTC's.
Does the DRBIIItdisplay RIGHT OUTPUT SHORT?All
Ye s®Go To 2
No®Refer to the wiring diagrams located in the service information to
help isolate a possible intermittent short.
Perform BODY VERIFICATION TEST - VER 1.
2 Turn the ignition off.
Disconnect the Right I/P Speaker harness connector.
Turn the ignition on.
Turn the radio on.
With the DRBIIIt, erase the audio DTCs.
Cycle the ignition switch from off to on and wait 10 seconds.
With the DRBIIIt, read DTC's.
Does the DRBIIItdisplay RIGHT OUTPUT SHORT?All
Ye s®Go To 3
No®Replace the Right I/P Speaker.
Perform BODY VERIFICATION TEST - VER 1.
222
AUDIO

Symptom:
IGNITION RUN OUTPUT SHORT
When Monitored and Set Condition:
IGNITION RUN OUTPUT SHORT
When Monitored: With the ignition on and battery voltage greater than 10.4 volts.
Set Condition: The Ignition Switch Output circuit(s) from the BCM to the HVAC,
Overhead Console, or the ABS controller are open or go below 0.5 volt for more than 2
seconds.
POSSIBLE CAUSES
TEST FOR CURRENT DTC'S
BODY CONTROL MODULE IGNITION OUTPUT INOPERATIVE (HVAC)
BODY CONTROL MODULE IGNITION OUTPUT CIRCUIT OPEN (HVAC)
BODY CONTROL MODULE IGNITION OUTPUT CIRCUIT SHORTED (HVAC)
BODY CONTROL MODULE IGNITION OUTPUT INOPERATIVE (OVERHEAD)
BODY CONTROL MODULE IGNITION OUTPUT CIRCUIT OPEN (OVERHEAD)
BODY CONTROL MODULE IGNITION OUTPUT CIRCUIT SHORTED (OVERHEAD)
BODY CONTROL MODULE IGNITION OUTPUT INOPERATIVE (ABS)
BODY CONTROL MODULE IGNITION OUTPUT CIRCUIT OPEN (ABS)
BODY CONTROL MODULE IGNITION OUTPUT CIRCUIT SHORTED (ABS)
BODY CONTROL MODULE
TEST ACTION APPLICABILITY
1 With the DRBIIIt, record and erase DTC's.
Cycle the ignition from ON to OFF.
Start the vehicle and observe the DRBIIIt.
With the DRBIIIt, read DTC's.
Does the DRBIIItdisplay IGNITION RUN OUTPUT SHORT?All
Ye s®Go To 2
No®The condition that caused this DTC is currently not present. Use
the wiring diagram/schematic as a guide, and inspect the related
wiring harness for a possible intermittent condition.
2 A failure in the HVAC, Overhead Console, or the ABS system could cause this DTC
to set. The Ignition Switch Run (HVAC) circuit will be diagnosed first.
Continue to the HVAC circuit for further diagnosis.All
HVAC circuit diagnostics.
Go To 3
353
COMMUNICATION

Symptom:
RUN/START HARDWIRE INPUT FAILURE
When Monitored and Set Condition:
RUN/START HARDWIRE INPUT FAILURE
When Monitored: With the ignition on and battery voltage greater than 10.4 volts.
Set Condition: The Fused Ignition Switch Output circuit voltage at the BCM goes below
0.5 volts and the BCM detects a voltage mismatch between the two ignition switch inputs.
POSSIBLE CAUSES
TEST FOR CURRENT DTC'S
FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN
IGNITION SWITCH
BODY CONTROL MODULE
TEST ACTION APPLICABILITY
1 With the DRBIIIt, record and erase DTC's.
Cycle the ignition from ON to OFF.
Start the vehicle and observe the DRBIIIt.
With the DRBIIIt, read DTC's.
Does the DRBIIItdisplay RUN/START HARDWIRE INPUT FAILURE?All
Ye s®Go To 2
No®The condition that caused this DTC is currently not present. Use
the wiring diagram/schematic as a guide, and inspect the related
wiring harness for a possible intermittent condition.
Perform BODY VERIFICATION TEST - VER 1.
2 Turn the ignition off.
Gain access to the Ignition Switch connector.
Turn the ignition on.
While back probing, measure the voltage of the Fused Ignition Switch Output circuit.
Is the voltage above 10.0 volts?All
Ye s®Go To 3
No®Replace the Ignition Switch.
Perform BODY VERIFICATION TEST - VER 1.
3 Turn the ignition off.
Gain access to the Body Control Module C2 connector.
While back probing, measure the voltage of the Fused Ignition Switch Output circuit.
Is the voltage above 10.0 volts?All
Ye s®Repair the Fused Ignition Switch Output circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
No®Replace the Body Control Module.
Perform BODY VERIFICATION TEST - VER 1.
370
COMMUNICATION

Symptom:
*BUS +/- SIGNALS OPEN FROM AUTOMATIC TEMPERATURE
CONTROL MODULE
POSSIBLE CAUSES
ATTEMPT TO COMMUNICATE WITH THE BCM
GROUND CIRCUIT OPEN
FUSED (B+) CKT OPEN
IGNITION SWITCH CIRCUIT OPEN
OPEN PCI BUS CIRCUIT
AUTOMATIC TEMPERATURE 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.
Disconnect the ATC C2 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 ATC 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 4
No®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.
4 Turn the ignition off.
Disconnect the ATC C2 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 5
No®Repair the Ignition Switch circuit for an open or short. Refer to
the wiring diagrams in the service information.
Perform BODY VERIFICATION TEST - VER 1.
373
COMMUNICATION

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

Symptom:
*NO RESPONSE FROM OVERHEAD CONSOLE
POSSIBLE CAUSES
GROUND CIRCUIT OPEN
IGNITION SWITCH OUTPUT CIRCUIT OPEN
FUSED B+ CIRCUIT OPEN
OPEN PCI BUS CIRCUIT
OVERHEAD CONSOLE
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.
Turn the ignition off.
Disconnect the Overhead Console harness connector.
Measure the resistance between ground and the ground circuit (cav 4).
Is the resistance below 5.0 ohms?All
Ye s®Go To 2
No®Repair the ground 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.
Turn the ignition off.
Disconnect the Overhead Console harness connector.
Turn the ignition on.
Using a 12-volt test light connected to ground, probe the Ignition Switch Output
circuit.
Is the test light illuminated?All
Ye s®Go To 3
No®Repair the Ignition Switch Output circuit for an open. Refer to the
wiring diagrams located in the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
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.
Turn the ignition off.
Disconnect the Overhead Console 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. Refer to the wiring
diagrams located in the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
410
COMMUNICATION