Chrysler RG Voyager. Manual — part 293

TEST

ACTION

APPLICABILITY

4

NOTE: Some environment factors can disrupt the RF frequency signal.
Check for RF frequency concerns and aftermarket accessories that would
compromise the RF frequency signal before diagnosing Sensor/Transmitter
or SKREEM being the fault.
NOTE: Review with the customer their environmental driving conditions
within the first 10 minutes of driving.
Are there environmental factors causing the RF frequency issue?

All

Yes

→ Test Complete.

No

→ Go To 5

5

Turn the ignition off.
Replace the appropriate Tire Pressure Sensor/Transmitter in accordance with the
service information.
Drive the vehicle for 10 minutes at 20 mph (32km/h). The Sensors/transmitters will
be in drive mode operation.
With the DRBIII

t, read DTC’s.

Does the DTC reset?

All

Yes

→ Check connectors - Clean/repair as necessary. Replace and pro-

gram the SKREEM in accordance with the Service Information.
Perform TIRE PRESSURE VERIFICATION TEST - VER 1 -
SKREEM.

No

→ Test Complete.

1141

TIRE PRESSURE MONITORING

INITIALIZATION FAULT —

Continued

Symptom List:

PRNDL MESSAGE MISSING
VEHICLE SPEED MESSAGE MISSING

Test Note:

All symptoms listed above are diagnosed using the same tests.

The title for the tests will be PRNDL MESSAGE MISSING.

When Monitored and Set Condition:

PRNDL MESSAGE MISSING

When Monitored:

Ignition ON.

Set Condition:

Fault is set when there is a loss of the PRNDL message if not received for

5 seconds.

VEHICLE SPEED MESSAGE MISSING

When Monitored:

Ignition ON.

Set Condition:

Fault is set when there is a loss of the vehicle speed message if not

received for 5 seconds.

POSSIBLE CAUSES

PCM DTC’S

INSTRUMENT CLUSTER DTC’S

BUS COMMUNICATION

SKREEM FAULT

1142

TIRE PRESSURE MONITORING

TEST

ACTION

APPLICABILITY

1

NOTE: If the TPM indicator is illuminated, check for a low tire pressure
condition. If the TPM indicator is flashing, check for DTC’s.
NOTE: The below test is to locate the Tire Pressure Sensor/Transmitter.
NOTE: If the tires have been rotated, the Tire Pressure Sensor/Transmitters
are no longer in sequence from the factory. Faults are linked to Sensor/
Transmitter ID’s.
NOTE: You must determine which Tire Pressure Sensor/Transmitter has set
the fault or alert before diagnosing the system correctly.
NOTE: Set ALL tire pressures to recommended specifications and recheck
for faults/alerts.
The fault will set within two minutes when at 20 PSI.
Starting with the left front wheel, deflate the tire down to 20 PSI and wait 2 minutes.
If the TPMS fault was detected and associated to this Sensor/Transmitter, it would
correspond to the left front Sensor/Transmitter.
If the TPMS fault was detected and not associated to this Sensor/Transmitter, repeat
the process until the faulty Sensor/Transmitter has been identified.
NOTE: Once a fault/alert has set, it will establish the location of the Tire
Pressure Sensors/Transmitter. Repeat steps until the applicable Tire Pres-
sure Sensor/Transmitter has been located.
Perform this procedure prior to Symptom diagnosis.

All

Continue

Go To

2

2

Cycle the ignition switch from OFF to ON.
With the DRBIII

t, record DTC’s.

Drive the vehicle.
With the DRBIII

t, read the PCM DTC’s.

Does the DRBIII

t display any PCM DTC’s?

All

Yes

→ Refer to Powertrain Control Module information for the related

symptom(s).
Perform TIRE PRESSURE VERIFICATION TEST - VER 1 -
SKREEM.

No

→ Go To 3

3

Cycle the ignition switch from OFF to ON.
With the DRBIII

t, monitor the Instrument Cluster’s Vehicle Speed or PRNDL data.

Does the DRBIII

t display Vehicle Speed or PRNDL data?

All

Yes

→ Check connectors - Clean/repair as necessary. Replace and pro-

gram the SKREEM in accordance with the Service Information.
Perform TIRE PRESSURE VERIFICATION TEST - VER 1 -
SKREEM.

No

→ Refer to BODY COMMUNICATION for the related symptom(s).

Perform TIRE PRESSURE VERIFICATION TEST - VER 1 -
SKREEM.

1143

TIRE PRESSURE MONITORING

PRNDL MESSAGE MISSING —

Continued

Symptom:

BCM MESSAGES NOT RECEIVED (EXPORT ONLY)

When Monitored and Set Condition:

BCM MESSAGES NOT RECEIVED (EXPORT ONLY)

When Monitored:

Continuously with the ignition on.

Set Condition:

The Thatcham Alarm Module does not receive any messages from the

BCM for at least 5 seconds.

POSSIBLE CAUSES

INTERMITTENT CONDITION

BCM COMMUNICATION FAILURE

PCI BUS CIRCUIT OPEN

THATCHAM ALARM MODULE - INTERNAL MALFUNCTION

TEST

ACTION

APPLICABILITY

1

Turn the ignition on.
With the DRBIII

t, attempt to communicate with the BCM.

Was the DRBIII

t able to communicate with the BCM?

All

Yes

→ Go To 2

No

→ Refer to the Communication category and perform the appropri-

ate symptom.
Perform VTSS VERIFICATION TEST - 1A.

2

Turn the ignition on.
With the DRBIII

t, attempt to communicate with the Thatcham Alarm Module.

Was the DRBIII

t able to communicate with the Thatcham Alarm Module?

All

Yes

→ The condition that caused this symptom is currently not present.

Inspect the related wiring harness for a possible intermittent
condition.
Perform VTSS VERIFICATION TEST - 1A.

No

→ Go To 3

3

Turn the ignition off.
Disconnect the negative battery cable.
Disconnect the Thatcham Alarm Module 16-way harness connector.
Disconnect the DRBIII

t from the data link connector.

Measure the resistance of the PCI Bus circuit between the data link connector and
the Thatcham Alarm Module connector.
Is the resistance below 5.0 ohms?

All

Yes

→ Replace the Thatcham Alarm Module.

Perform VTSS VERIFICATION TEST - 1A.

No

→ Repair the PCI Bus circuit for an open.

Perform VTSS VERIFICATION TEST - 1A.

1144

VEHICLE THEFT/SECURITY