Chrysler Voyager. Manual — part 238

TEST

ACTION

APPLICABILITY

4

Note: 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.
Install DRBIII

t SuperCard 2 CH8361 into DRBIIIt.

With the DRBIII

t select 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. Set Probe to x10.
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

Yes

→ 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

Yes

→ 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

Yes

→ Go To 7

No

→ Go To 8

379

COMMUNICATION

*NO RESPONSE FROM INSTRUMENT CLUSTER —

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

Yes

→ Repair the Instrument Cluster Wake Up Sense circuit for a short

to voltage.
Perform BODY VERIFICATION TEST - VER 1.

No

→ Replace the Instrument Cluster in accordance with the service

information.
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

Yes

→ Replace the Instrument Cluster in accordance with the service

information.
Perform BODY VERIFICATION TEST - VER 1.

No

→ Replace the Body Control Module in accordance with the service

information.
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

Yes

→ Replace the Instrument Cluster in accordance with the service

information.
Perform BODY VERIFICATION TEST - VER 1.

No

→ Repair the Instrument Cluster Wake Up Sense circuit for an open.

Perform BODY VERIFICATION TEST - VER 1.

380

COMMUNICATION

*NO RESPONSE FROM INSTRUMENT CLUSTER —

Continued

Symptom:

*NO RESPONSE FROM LEFT SIACM

POSSIBLE CAUSES

INTERROGATE FCM

GROUND CIRCUIT OPEN

SIACM RUN/START DRIVER CIRCUIT OPEN

PCI BUS CIRCUIT OPEN

LEFT SIDE IMPACT AIRBAG CONTROL MODULE

TEST

ACTION

APPLICABILITY

1

Turn the ignition on.
With the DRBIII

t, check the FCM for any DTC’s.

Are any FCM DTC’s present?

All

Yes

→ Refer to the appropriate category and perform the symptom.

Perform AIRBAG VERIFICATION TEST - VER 1.

No

→ Go To 2

2

Ensure that the battery is fully charged.
Warning: TURN IGNITION OFF, DISCONNECT THE BATTERY AND WAIT
TWO MINUTES BEFORE PROCEEDING.
Disconnect the Left Side Impact Airbag Control Module harness connector.
Connect the appropriate Load Tool SIACM Adapter to the SIACM connector.
Using a 12-volt test light connected to 12-volts, probe both Ground circuits.
NOTE: Make sure test light is connected to the Battery positive terminal.
Is the test light illuminated for each circuit?

All

Yes

→ Go To 3

No

→ Repair the Ground circuit for an open.

Perform AIRBAG VERIFICATION TEST - VER 1.

Note: When reconnecting Airbag system components, the ignition must be
turned off and the battery must be disconnected.

3

Warning: TURN IGNITION OFF, DISCONNECT THE BATTERY AND WAIT
TWO MINUTES BEFORE PROCEEDING.
Disconnect the Left Side Impact Airbag Control Module harness connector.
Connect the appropriate Load Tool SIACM Adapter to the SIACM connector.
Turn the ignition on and then reconnect the Battery.
Measure the voltage of the SIACM Run/Start Driver circuit.
Is the voltage above 6.0 volts?

All

Yes

→ Go To 4

No

→ Repair the SIACM Run/Start Driver circuit for an open.

Perform AIRBAG VERIFICATION TEST - VER 1.

Note: When reconnecting Airbag system components, the ignition must be
turned off and the battery must be disconnected.

381

COMMUNICATION

TEST

ACTION

APPLICABILITY

4

NOTE: Ensure there is PCI bus communication with other modules. If not,
refer to the PCI Bus Communication Failure symptom and repair as
necessary.
WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND
WAIT TWO MINUTES BEFORE PROCEEDING.
Disconnect the Left Side Impact Airbag Control Module harness connector.
Connect the appropriate Load Tool SIACM Adapter to the SIACM connector.
Turn the ignition on and then reconnect the Battery.
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 DRBIII

t select 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. Set Probe to x10.
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 Side Impact Airbag Control Module connector.
Observe the voltage display on the DRB Lab Scope.
Does the voltage pulse from 0 to approximately 7.5 volts?

All

Yes

→ Go To 5

No

→ Repair the PCI Bus circuit for an open.

Perform AIRBAG VERIFICATION TEST - VER 1.

5

If there are no possible causes remaining, view repair.

All

Yes

→ Replace the Left Side Impact Airbag Control Module (LSIACM) in

accordance with the Service Information. WARNING: Make sure
the battery is disconnected and wait 2 minutes before proceeding.
Perform AIRBAG VERIFICATION TEST - VER 1.

382

COMMUNICATION

*NO RESPONSE FROM LEFT SIACM —

Continued