Chrysler Pacifica. Manual - part 35

TEST

ACTION

APPLICABILITY

WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND
WAIT TWO MINUTES BEFORE PROCEEDING.
Gain access to the connectors on the bottom of the IPM.
Disconnect the IPM C7 connector.
NOTE: Check connectors - Clean and repair as necessary.
Measure the resistance of the ORC Run Only Driver circuit between the IPM C7
connector and ground.
Is the resistance below 500K ohms?

All

Yes

→ Go To 6

→ Replace the IPM.

Perform __AIRBAG VERIFICATION TEST - VER 1.

Disconnect the Airbag Control Module connector(s).
WARNING: TO AVOID PERSONAL INJURY OR DEATH, IF THE OCCUPANT
RESTRAINT CONTROLLER IS DROPPED AT ANY TIME, IT MUST BE
REPLACED.
NOTE: Check connectors - Clean and repair as necessary.
Connect the appropriate Load Tool Adaptor to the Airbag Control Module connector.
Measure the resistance of the ORC Run Only Driver circuit between the IPM C7
connector and ground.
Is the resistance below 500K ohms?

All

Yes

→ Repair the ORC Run Only Driver circuit shorted to ground.

Perform __AIRBAG VERIFICATION TEST - VER 1.

→ WARNING: MAKE SURE THE BATTERY IS DISCONNECTED,

THEN WAIT TWO MINUTES BEFORE PROCEEDING. Replace
the Airbag Control Module in accordance with Service Instruc-
tions.
Perform __AIRBAG VERIFICATION TEST - VER 1.

137

AIRBAG

LOSS OF IGNITION RUN ONLY —

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.

138

AIRBAG

LOSS OF IGNITION RUN ONLY —

Continued

Symptom:

NO CLUSTER MESSAGE

When Monitored and Set Condition:

NO CLUSTER MESSAGE

When Monitored:

With ignition on, the ACM monitors the PCI Bus for a message from

the MIC containing the airbag warning indicator status. The MIC transmits the message
one time at ignition on, lamp state change, or in response to the ACM message.

Set Condition:

If the MIC message is not received for 10 consecutive seconds, the code

will set.

POSSIBLE CAUSES

MIC, COMMUNICATION FAILURE

ACM, NO CLUSTER MESSAGES

STORED CODE OR INTERMITTENT CONDITION

ACTIVE CODE PRESENT

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

ACM - ACTIVE DTC

Go To

ACM - STORED DTC

Go To

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

Turn the ignition on.
With the DRBIII

t, ensure PCI Bus communications with the Instrument Cluster.

Is the Instrument Cluster communicating on the PCI Bus?

All

Yes

→ Go To 3

→ Refer to category COMMUNICATION CATEGORY and select the

related symptom NO RESPONSE or INSTRUMENT CLUSTER
BUS +/- SIGNAL OPEN.
Perform __AIRBAG VERIFICATION TEST - VER 1.

139

AIRBAG

TEST

ACTION

APPLICABILITY

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

All

Repair

Replace the Airbag Control 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.

With the DRBIII

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

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

All

Yes

→ Select appropriate symptom from Symptom List.

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

vehicle to customer.

140

AIRBAG

NO CLUSTER MESSAGE —

Continued

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