Chrysler Pacifica. Manual — part 34
TEST
ACTION
APPLICABILITY
4
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 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.
Disconnect the Airbag Control Module connector(s).
Connect the appropriate Load Tool ACM Adaptor to the Airbag Control Module
connector(s).
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNI-
TION ON, TO AVOID PERSONAL INJURY OR DEATH, THEN RECONNECT
THE BATTERY.
Connect a test light to ground and the ORC Run-Start Driver circuit at the ACM
adaptor.
Turn the ignition off, wait 90 seconds, then turn the ignition on.
With the DRBIII
t, read the active IPM DTC’s.
Does the DRB show an active ORC RUN - START DRIVER OPEN code?
All
Yes
→ Go To 5
No
→ 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.
5
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNI-
TION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BE-
FORE PROCEEDING.
Disconnect the IPM connector.
NOTE: Check connectors - Clean and repair as necessary.
Measure the resistance of the ORC Run - Start Driver circuit between the IPM
connector and the ACM Adapter.
Is the resistance below 1.0 ohms?
All
Yes
→ Repair the open ORC Run - Start Driver circuit.
Perform __AIRBAG VERIFICATION TEST - VER 1.
No
→ Replace the IPM.
Perform __AIRBAG VERIFICATION TEST - VER 1.
6
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNI-
TION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BE-
FORE PROCEEDING.
Disconnect the IPM connector.
NOTE: Check connectors - Clean and repair as necessary.
Measure the resistance of the ORC Run - Start Driver circuit between the IPM
connector and ground.
Is the resistance below 500K ohms?
All
Yes
→ Go To 7
No
→ Replace the IPM.
Perform __AIRBAG VERIFICATION TEST - VER 1.
133
AIRBAG
LOSS OF IGNITION RUN - START —
Continued
TEST
ACTION
APPLICABILITY
7
WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND
WAIT TWO MINUTES BEFORE PROCEEDING.
Disconnect the Airbag Control module connector(s).
NOTE: Check connectors - Clean and repair as necessary.
Measure the resistance of the ORC Run - Start Driver circuit between the IPM
connector and ground.
Is the resistance below 500K ohms?
All
Yes
→ Repair the ORC Run - Start Driver circuit shorted to ground.
Perform __AIRBAG VERIFICATION TEST - VER 1.
No
→ 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.
8
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
→ No problem found at this time. Erase all codes before returning
vehicle to customer.
134
AIRBAG
LOSS OF IGNITION RUN - START —
Continued
Symptom List:
LOSS OF IGNITION RUN ONLY
ORC RUN ONLY DRIVER OPEN
ORC RUN ONLY DRIVER SHORT TO GROUND
Test Note:
All symptoms listed above are diagnosed using the same tests.
The title for the tests will be LOSS OF IGNITION RUN ONLY.
When Monitored and Set Condition:
LOSS OF IGNITION RUN ONLY
When Monitored:
With the ignition in the run only position the ACM monitors the ORC
Run Only Driver circuit for proper system voltage.
Set Condition:
If the voltage on the ORC Run Only Driver circuit drops below 4.5 volts,
the code will set.
ORC RUN ONLY DRIVER OPEN
When Monitored:
After the ignition is turned OFF, the IPM controlled transistor (high
side driver) places a diagnostic voltage on the ORC Run Only circuit for 60 seconds. An
open high side driver (HSD) circuit voltage is between 2.4 and 5.0 volts.
Set Condition:
This code will set within 8 second. Note: the diagnostic voltage will only
last for 60 seconds after the ignition is turned off.
ORC RUN ONLY DRIVER SHORT TO GROUND
When Monitored:
The IPM uses a microprocessor controlled transistor (high side driver)
to supply power to the ACM. The microprocessor monitors for short to ground when the
ignition is in the Run position.
Set Condition:
The code will set within 1 second.
POSSIBLE CAUSES
ACM, LOSS OF IGNITION RUN ONLY
ACM, ORC RUN ONLY CIRCUIT OPEN
IPM, ORC RUN ONLY DRIVER CIRCUIT OPEN
IPM, ORC RUN ONLY CIRCUIT SHORT TO GROUND
ACM, ORC RUN ONLY CIRCUIT SHORT TO GROUND
ORC RUN ONLY CIRCUIT SHORT TO GROUND
STORED CODE OR INTERMITTENT CONDITION
ACTIVE CODE PRESENT
135
AIRBAG
TEST
ACTION
APPLICABILITY
1
Ensure the battery is fully charged.
Turn the ignition on.
NOTE: For the purpose of this test, the AECM and ORC modules will be
referred to as an ACM.
SELECT ONE:
All
ACM - ACTIVE DTC
ACM - STORED DTC
IPM - ACTIVE DTC
IPM - STORED DTC
NOTE: When reconnecting Airbag system components, the ignition must be
turned off and the battery must be disconnected.
2
With the DRBIII
t, read the active IPM DTCs.
Are there any active ORC RUN ONLY DRIVER codes?
All
Yes
→ Go To 3
No
→ Replace the Airbag Control Module in accordance with Service
Instructions.
Perform __AIRBAG VERIFICATION TEST - VER 1.
3
Select the active ORC RUN ONLY DTC displayed on the DRB.
All
1. ORC RUN ONLY DRIVER OPEN
3. ORC RUN-START SHORT TO GROUND
4
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 AIRBAG CONTROL MODULE IS DROPPED AT ANY
TIME, IT MUST BE REPLACED.
Disconnect the Airbag Control Module connector(s).
NOTE: Check connectors - Clean and repair as necessary.
Connect the appropriate Load Tool Adaptor to the Airbag Control Module connector.
Connect a test light to ground and the ORC Run Only Driver circuit at the Airbag
Control Module connector.
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNI-
TION ON, THEN RECONNECT THE BATTERY.
Turn the ignition off, wait 90 seconds and then turn the ignition ON.
With the DRBIII
t, read the active IPM DTCs.
Does the DRB show an active ORC RUN ONLY DRIVER OPEN code?
All
Yes
→ Test Complete.
No
→ Replace the Airbag Control Module in accordance with Service
Instructions.
Perform __AIRBAG VERIFICATION TEST - VER 1.
136
AIRBAG
LOSS OF IGNITION RUN ONLY —
Continued
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