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Chrysler RG Voyager. Manual - part 51

Symptom:

NO ORC MESSAGE

When Monitored and Set Condition:

NO ORC MESSAGE

When Monitored:

At ignition on, the OCM monitors the PCI Bus for a PCI Bus message

from the Airbag Control Module.

Set Condition:

The DTC will set if the OCM does not receive a valid ACM bus message

within 3 consecutive seconds.

POSSIBLE CAUSES

ORC, COMMUNICATION FAILURE

OCM, NO ORC MESSAGES

STORED CODE OR INTERMITTENT CONDITION

ACTIVE CODE PRESENT

OCS - SERVICE REPLACEMENT KIT

TEST

ACTION

APPLICABILITY

Turn the ignition on.
NOTE: Ensure the battery is fully charged.
NOTE: For the purpose of this test, the AECM and ORC modules will be
referred to as an ACM.
SELECT ACTIVE or STORED DTC:

All

OCM - ACTIVE DTC

Go To

OCM - STORED DTC

Go To

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

With the DRBIII

t, ensure PCI Bus communications with the Airbag Control Module.

Is the Airbag Control Module communicating on the PCI Bus?

All

Yes

→ Go To 3

→ Refer to symptom list and select the related symptom NO RE-

SPONSE FROM OCM or OCM BUS +/- SIGNAL OPEN.

173

AIRBAG

TEST

ACTION

APPLICABILITY

Inspect the passenger OCS wiring to determine if the Bladder and Cushion Service
Kit has been installed.
NOTE: Check connectors - for tamper evident material.
Tamper evident material is installed onto the Kit harness to keep the kit components
together in shipping and installation.
NOTE: The Bladder and Cushion Service Kit component are calibrated
together and should not be disconnected.
If the OCM harness connector can be easily disconnected the OCS is original
equipment.
Is the passenger seat original equipment?

All

Yes

→ Go To 4

→ Go To 5

WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNI-
TION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BE-
FORE PROCEEDING.
WARNING: IF THE OCCUPANT CLASSIFICATION MODULE IS DROPPED
AT ANY TIME, IT MUST BE REPLACED. FAILURE TO TAKE THE PROPER
PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT
AND PERSONAL INJURY OR DEATH.
If there are no possible causes remaining, view repair.

All

Repair

Replace the Occupant Classification Module in accordance with
Service Instructions.
Perform __AIRBAG VERIFICATION TEST - VER 1.

NOTE: When reconnecting airbag system components the Ignition must be
turned off and the Battery must be disconnected.

All

Repair:

Replace the OCS Bladder Service Kit in accordance with service
information. Then perform the Verification Required test to re-
move DTC created by the repair.
Perform __AIRBAG VERIFICATION TEST - VER 1.

174

AIRBAG

NO ORC MESSAGE —

Continued

TEST

ACTION

APPLICABILITY

With the DRBIII

t, record and erase all DTC’s from all Airbag modules.

If equipped with Passenger Airbag On - Off switch, read the DTC’s in all switch
positions.
If any ACTIVE codes are present they must be resolved before diagnosing any stored
codes.
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNI-
TION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BE-
FORE PROCEEDING.
Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
Look for chaffed, pierced, pinched, or partially broken wires and broken, bent, pushed
out, spread, corroded, or contaminated terminals.
The following additional checks may assist you in identifying a possible intermittent
problem.
Reconnect any disconnected components and harness connector.
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNI-
TION ON, THEN RECONNECT THE BATTERY.
With the DRBIII

t monitor active codes as you work through the following steps.

WARNING: TO AVOID PERSONAL INJURY OR DEATH, MAINTAIN A SAFE
DISTANCE FROM ALL AIRBAGS WHILE PERFORMING THE FOLLOWING
STEPS.
Wiggle the wiring harness and connectors of the related airbag circuit or component.
If codes are related to the Driver Airbag circuits, rotate the steering wheel from stop
to stop.
IF only stored codes return continue the test until the problem area has been isolated
In the previous steps you have attempted to recreate the conditions responsible for
setting active DTC in question.
Are any ACTIVE DTCs present?

All

Yes

→ Select appropriate symptom from Symptom List.

→ No problem found at this time. Erase all codes before returning

vehicle to customer.

175

AIRBAG

NO ORC MESSAGE —

Continued

Symptom List:

NO PCI LOOPBACK
PCI BUS SHORT TO BATTERY
PCI BUS SHORT TO GROUND

Test Note:

All symptoms listed above are diagnosed using the same tests.

The title for the tests will be NO PCI LOOPBACK.

When Monitored and Set Condition:

NO PCI LOOPBACK

When Monitored:

With the ignition on and the module transmitting information on the

BUS.

Set Condition:

The code will set immediately if the onboard diagnostic cannot detect the

module transmitting information on the BUS. NOTE: Any Bus Failure will may cause a
stored code to set.

PCI BUS SHORT TO BATTERY

When Monitored:

With the ignition on, the module performs internal tests on the PCI

Communication Bus.

Set Condition:

This DTC will set if the PCI Communication Bus input is shorted to

vehicle power.

PCI BUS SHORT TO GROUND

When Monitored:

With the ignition on, the module performs internal tests on the PCI

Communication Bus.

Set Condition:

This DTC will set if the PCI Communication Bus input is shorted to

vehicle ground/chassis.

POSSIBLE CAUSES

CHECKING FOR VOLTAGE AT ACM

WIRING HARNESS INTERMITTENT

ACM, NO RESPONSE FROM

AIRBAG CONTROL MODULE - ACM

GROUND CIRCUIT OPEN

OCCUPANT CLASSIFICATION MODULE - OCM

OPEN PCI BUS CIRCUIT AT THE DATA LINK CONNECTOR (DLC)

PCI BUS CIRCUIT OPEN

PCI BUS CIRCUIT SHORTED TO VOLTAGE

MODULE SHORT TO VOLTAGE

176

AIRBAG

Content .. 49 50 51 52 ..