display CHRYSLER VOYAGER 2001 Service Manual

Symptom:
DOME SWITCH INPUT OPEN
When Monitored and Set Condition:
DOME SWITCH INPUT OPEN
When Monitored: Dome Lamps Off.
Set Condition: When Voltage is below 4.8 volts for 62.5 msec.
POSSIBLE CAUSES
HEADLAMP SWITCH MUX RETURN CIRCUIT OPEN
PANEL LAMPS DIMMER SIGNAL CIRCUIT OPEN
BODY CONTROL MODULE
HEADLAMP SWITCH
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, clear all BCM DTC's.
Turn the Dome Lamps on.
With the DRBIIIt, read the DTC information.
Does the DRBIIItdisplay: Dome Switch Input Open?All
Ye s®Go To 2
No®Repair the Headlamp Switch MUX Return Circuit for an open
condition.
Perform BODY VERIFICATION TEST - VER 1.
2 Turn the ignition off.
Disconnect the Body Control Module harness connector.
Disconnect the Headlamp Switch harness connector.
Measure the resistance of the Panel Lamps Dimmer Signal Circuit.
Is the resistance below 5.0 ohms?All
Ye s®Go To 3
No®Repair the Panel Lamps Dimmer Signal Circuit for an open
condition.
Perform BODY VERIFICATION TEST - VER 1.
3 Turn the ignition off.
Disconnect the Headlamp Switch harness connector.
Disconnect the Body Control Module harness connector.
Measure the voltage of the Headlamp Switch MUX Return Circuit.
Is the voltage below 4.8 volts?All
Ye s®Replace the Body Control Module.
Perform BODY VERIFICATION TEST - VER 1.
No®Replace the Headlamp Switch.
Perform BODY VERIFICATION TEST - VER 1.
635
INTERIOR LIGHTING

Symptom:
READING LAMP OUTPUT SHORT
When Monitored and Set Condition:
READING LAMP OUTPUT SHORT
When Monitored: Anytime the Body Control Module is active.
Set Condition: When output voltage status is LOW.
POSSIBLE CAUSES
READING LAMPS DRIVER CIRCUIT SHORT
COURTESY LAMPS DRIVER READING LAMPS CIRCUIT SHORT TO GROUND
BODY CONTROL MODULE
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, clear all BCM DTC's.
Turn the reading lamps on.
With the DRBIIIt, read the DTC information.
Does then DRBIIItdisplay : Reading Lamps Output Short?All
Ye s®Go To 2
No®Repair the Reading Lamps Driver Circuit for a short condition.
Perform BODY VERIFICATION TEST - VER 1.
2 Turn the ignition off.
Disconnect the Body Control Module C2 harness connector
Measure the resistance of the Courtesy Lamps Driver Reading Lamps Circuit.
Is the resistance below 5.0 ohms?All
Ye s®Repair the Courtesy Lamps Driver Reading Lamps Circuit for a
short to ground.
Perform BODY VERIFICATION TEST - VER 1.
No®Replace the Body Control Module.
Perform BODY VERIFICATION TEST - VER 1.
641
INTERIOR LIGHTING

Symptom:
MEMORY POSITION SWITCH STUCK
When Monitored and Set Condition:
MEMORY POSITION SWITCH STUCK
When Monitored: Anytime the Body Control Module is awake.
Set Condition: If the Memory switch is active for over 10 seconds.
POSSIBLE CAUSES
DTC PRESENT
MEMORY SET SWITCH STUCK
MEMORY SELECT SWITCH MUX SHORT TO GROUND
BODY CONTROL MODULE
TEST ACTION APPLICABILITY
1 With the DRBIIIt, record and erase DTC's.
Cycle the ignition OFF then back ON.
With the DRBIIIt, read DTCs.
Operate the Memory Set switch several times while monitoring the DRBIII.
Does the DRBIIItdisplay MEMORY SWITCH INPUT STUCK?All
Ye s®Go To 2
No®Using the wiring diagram/schematic as a guide, inspect the
wiring and connectors for an intermittent condition.
Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.
2 Disconnect the Memory Set Switch connector
Turn the ignition on.
With the DRBIIItin Sensors, read the Memory Select SW Volts.
Is the voltage above 4.8 volts?All
Ye s®Replace the Memory Set Switch.
Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.
No®Go To 3
3 Turn the ignition off.
Disconnect the Memory Set switch connector.
Disconnect the BCM C1 harness connector.
Measure the resistance between ground and the Memory Select Switch MUX circuit.
Is the resistance above 1000.0 ohms?All
Ye s®Go To 4
No®Repair the Memory Select Switch MUX circuit for a short to
ground.
Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.
674
MEMORY SEAT

Symptom:
MEMORY SWITCH INPUT OPEN
When Monitored and Set Condition:
MEMORY SWITCH INPUT OPEN
When Monitored: Continuously when the PCI bus is active.
Set Condition: If the Memory Set switch voltage is greater than 4.8 volts for over 10
seconds.
POSSIBLE CAUSES
DTC PRESENT
MEMORY SET SWITCH OPEN
MEMORY SELECT SWITCH MUX OPEN
MEMORY SELECT SWITCH RETURN OPEN
BODY CONTROL MODULE
TEST ACTION APPLICABILITY
1 With the DRBIIIt, record and erase DTC's.
Cycle the ignition OFF then back ON.
With the DRBIIIt, read DTCs.
Operate the Memory Set switch several times while monitoring the DRBIII.
Does the DRBIIItdisplay MEMORY SWITCH INPUT OPEN?All
Ye s®Go To 2
No®Using the wiring diagram/schematic as a guide, inspect the
wiring and connectors for an intermittent condition.
Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.
2 Disconnect the Memory Set Switch connector
Turn the ignition on.
Connect a jumper wire between Memory Select Switch MUX and Memory Select
Switch Return.
With the DRBIIItin Sensors, read the Memory Select SW Volts.
Is the voltage below 1.0 volt?All
Ye s®Replace the Memory Set Switch.
Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.
No®Go To 3
676
MEMORY SEAT

Symptom:
MEMORY SWITCH INPUT SHORT
When Monitored and Set Condition:
MEMORY SWITCH INPUT SHORT
When Monitored: Anytime the Body Control Module is awake.
Set Condition: If the Memory Set switch voltage is less than 1.35 volts for over 10
seconds.
POSSIBLE CAUSES
DTC PRESENT
MEMORY SET SWITCH SHORTED
MEMORY SELECT SWITCH MUX SHORTED
BODY CONTROL MODULE
TEST ACTION APPLICABILITY
1 With the DRBIIIt, record and erase DTC's.
Cycle the ignition OFF then back ON.
With the DRBIIIt, read DTCs.
Operate the Memory Set switch several times while monitoring the DRBIII.
Does the DRBIIItdisplay MEMORY SWITCH INPUT SHORT?All
Ye s®Go To 2
No®Using the wiring diagram/schematic as a guide, inspect the
wiring and connectors for an intermittent condition.
Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.
2 Disconnect the Memory Set Switch connector
Turn the ignition on.
With the DRBIIItin Sensors, read the Memory Select SW Volts.
Is the voltage above 4.8 volts?All
Ye s®Replace the Memory Set Switch.
Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.
No®Go To 3
3 Turn the ignition off.
Disconnect the Memory Set switch connector.
Disconnect the BCM C1 harness connector.
Measure the resistance between ground and the Memory Select Switch MUX circuit.
Is the resistance above 5.0 ohms?All
Ye s®Go To 4
No®Repair the Memory Select Switch MUX circuit for a short to
ground.
Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.
678
MEMORY SEAT

Symptom:
BUS MESSAGES MISSING
When Monitored and Set Condition:
BUS MESSAGES MISSING
When Monitored: While the EVIC is performing a series of tests on the microprocessor,
compass coil, and internal circuitry.
Set Condition: The code will be set, if during the self test the EVIC does not receive
messages from the BCM, FCM, EATX or PCM.
POSSIBLE CAUSES
BCM COMMUNICATION
PCM COMMUNICATION
FCM COMMUNICATION
EATX COMMUNICATION
EVIC
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, attempt to communicate with BCM.
Can communication be established with the BCM.All
Ye s®Go To 2
No®Refer to Communication Category and perform the appropriate
system.
Perform BODY VERIFICATION TEST - VER 1.
2 Turn the ignition on.
With the DRBIIIt, access Body Control Module.
Select Body Controller and System test.
Does the DRBIIItdisplay PCM Active on the Bus?All
Ye s®Go To 3
No®Refer to Communication Category and perform the appropriate
system.
Perform BODY VERIFICATION TEST - VER 1.
3 Turn the ignition on.
With the DRBIIIt, attempt to communicate with the FCM.
Can communication be established with the FCM?All
Ye s®Go To 4
No®Refer to Communication Category and perform the appropriate
system.
Perform BODY VERIFICATION TEST - VER 1.
708
OVERHEAD CONSOLE

Symptom:
*REPAIRING CMTC DISPLAYS DOUBLE DASH(--)INTEMP
DISPLAY
POSSIBLE CAUSES
*NO RESPONSE - PCI BUS FRONT CONTROL MODULE
*CMTC BUS MESSAGE FAILURE
*COMPASS MINI-TRIP COMPUTER
*AMBIENT TEMPERATURE SENSOR
*AMBIENT TEMPERATURE SENSOR SIGNAL CIRCUIT SHORT TO SENSOR CIRCUIT
*AMBIENT TEMPERATURE SENSOR SIGNAL CIRCUIT SHORT TO GROUND
*AMBIENT TEMPERATURE SENSOR SIGNAL CIRCUIT OPEN
*AMBIENT TEMPERATURE SENSOR RETURN CIRCUIT OPEN
*INTELLIGENT POWER MODULE
*FRONT CONTROL MODULE
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, select System Monitors, J1850 Module Scan.
Does the DRBIIItdisplay FCM on the BUS?All
Ye s®Go To 2
No®Refer to the COMMUNICATIONS category and perform the
appropriate symptom.
2 Turn the ignition on.
With the DRBIIIt, select Body, Compass Mini-Trip, System Tests, then Auto Self
Test.
Does the DRBIIItdisplay TEST FAILED: Bus Message Failure?All
Ye s®Refer to the COMMUNICATIONS category and perform the
appropriate symptom.
No®Go To 3
3 Turn the ignition on.
With the DRBIIIt, select Body, Compass Mini-Trip, System Tests, then Auto Self
Test.
Does the DRBIIItdisplay TEST FAILED: Internal EVIC Failure?All
Ye s®Replace the Compass Mini-Trip Computer in accordance with the
Service Information.
Perform BODY VERIFICATION TEST - VER 1.
No®Go To 4
719
OVERHEAD CONSOLE

TEST ACTION APPLICABILITY
4 Turn the ignition off.
Disconnect the Ambient Temperature Sensor harness connector.
Check connectors - Clean/repair as necessary.
Measure the resistance of the Ambient Temperature Sensor.
At -40ÉC (-40ÉF) Sensor Resistance = 336 kilohms
At 55ÉC (140ÉF) Sensor Resistance = 2.488 kilohms
Does the Ambient Temperature Sensor measure within specifications?All
Ye s®Go To 5
No®Replace the Ambient Temperature Sensor in accordance with the
Service Information.
Perform BODY VERIFICATION TEST - VER 1.
5 Turn the ignition off.
Disconnect the Ambient Temperature Sensor harness connector.
Disconnect the IPM C1 harness connector.
Check connectors - Clean/repair as necessary.
Measure the resistance of the Ambient Temperature Sensor Signal circuit to the
Sensor Return circuit.
Does the resistance measure less than 5.0 ohms?All
Ye s®Repair the Ambient Temperature Sensor Signal circuit shorted to
the Sensor Return circuit.
Perform BODY VERIFICATION TEST - VER 1.
No®Go To 6
6 Turn the ignition off.
Disconnect the Ambient Temperature Sensor harness connector.
Disconnect the IPM C1 harness connector.
Check connectors - Clean/repair as necessary.
Measure the resistance of the Ambient Temperature Sensor Signal circuit to ground.
Does the resistance measure less than 5.0 ohms?All
Ye s®Repair the short to ground in the Ambient Temperature Sensor
Signal circuit.
Perform BODY VERIFICATION TEST - VER 1.
No®Go To 7
7 Turn the ignition off.
Disconnect the Ambient Temperature Sensor harness connector.
Disconnect the IPM C1 harness connector.
Check connectors - Clean/repair as necessary.
Measure the resistance of the Ambient Temperature Sensor Signal circuit.
Does the resistance measure less than 5.0 ohms?All
Ye s®Go To 8
No®Repair the open in the Ambient Temperature Sensor Signal
circuit.
Perform BODY VERIFICATION TEST - VER 1.
720
OVERHEAD CONSOLE
*REPAIRING CMTC DISPLAYS DOUBLE DASH(--)INTEMP DISPLAY
Ð
Continued

TEST ACTION APPLICABILITY
8 Turn the ignition off.
Disconnect the Ambient Temperature Sensor harness connector.
Disconnect the IPM C1 harness connector.
Check connectors - Clean/repair as necessary.
Measure the resistance of the Ambient Temperature Sensor Return circuit.
Does the resistance measure less than 5.0 ohms?All
Ye s®Go To 9
No®Repair the open in the Ambient Temperature Sensor Return
circuit.
Perform BODY VERIFICATION TEST - VER 1.
9 Turn the ignition off.
Disconnect and isolate the battery negative cable.
Disconnect the IPM C1 harness connector.
Disconnect the FCM from the IPM.
Check connectors - Clean/repair as necessary.
Measure the resistance of the Ambient Temperature Sensor Signal circuit and the
Return circuit through the IPM.
Does each circuit resistance measure less than 5.0 ohms?All
Ye s®Replace the Front Control Module in accordance with the Service
Information.
Perform BODY VERIFICATION TEST - VER 1.
No®Replace the Intelligent Power Module in accordance with the
Service Information.
Perform BODY VERIFICATION TEST - VER 1.
721
OVERHEAD CONSOLE
*REPAIRING CMTC DISPLAYS DOUBLE DASH(--)INTEMP DISPLAY
Ð
Continued

Symptom:
DRIVER DOOR LOCK SWITCH INPUT OPEN
When Monitored and Set Condition:
DRIVER DOOR LOCK SWITCH INPUT OPEN
When Monitored: At all times when battery power is supplied to the Body Control
Module.
Set Condition: When the BCM senses voltage to the door lock switch above 4.6 volts for
over 10 seconds.
POSSIBLE CAUSES
DTC PRESENT
BODY CONTROL MODULE - DRIVER DOOR LOCK SWITCH VOLTAGE LOW
DOOR LOCK SWITCH GROUND OPEN
DOOR LOCK SWITCH MUX CIRCUIT OPEN
DOOR LOCK SWITCH OPEN
TEST ACTION APPLICABILITY
1 With the DRBIIIt, record and erase DTC's.
Cycle the ignition switch from ON to OFF.
With the DRBIIIt, read DTC's.
Operate the door locks from the Driver Door Lock Switch while monitoring the
DRBIIIt.
Does the DRBIIItdisplay DR DOOR LOCK SW INPUT OPEN?All
Ye s®Go To 2
No®Using the wiring diagram/schematic as a guide, inspect the
wiring and connectors.
Perform BODY VERIFICATION TEST - VER 1.
2 With the DRBIIItin Sensors, read the DR DOOR LOCK SW voltage.
Does the DRBIIItdisplay 4.6 volts or greater?All
Ye s®Go To 3
No®Replace the Body Control Module.
Perform BODY VERIFICATION TEST - VER 1.
3 Disconnect the Driver Door Lock Switch 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 4
No®Repair the Ground circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
722
POWER DOOR LOCKS/RKE