Chrysler Voyager. Manual — part 166

TEST

ACTION

APPLICABILITY

3

WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND
WAIT TWO MINUTES BEFORE PROCEEDING.
If there are no possible causes remaining, view repair.

All

Repair

Replace the Airbag Control Module in accordance with Service
Manuals. WARNING: IF THE AIRBAG CONTROL MODULE
IS DROPPED AT ANY TIME, IT MUST BE REPLACED.
Perform AIRBAG VERIFICATION TEST - VER 1.

4

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: TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND
WAIT TWO MINUTES BEFORE 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: TURN THE IGNITION ON, THEN RECONNECT THE BATTERY.
With the DRBIII

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

WARNING: 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 circuits, rotate the steering wheel from stop to stop.
You have just attempted to simulate the condition that initially set the trouble code
message.
Did the DTC become active?

All

Yes

→ Select appropriate symptom from Symptom List.

No

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

vehicle to customer.

91

AIRBAG

INTERROGATE RIGHT SIACM —

Continued

Symptom List:

LOSS OF IGNITION RUN - START
ORC RUN - START DRIVER OPEN
ORC RUN - START DRIVER OVER CURRENT
ORC RUN - START DRIVER OVER TEMP
ORC RUN - START DRIVER OVER VOLT
ORC RUN - START DRIVER SHORT TO GROUND
SIACM RUN - START DRIVER OPEN
SIACM RUN - START DRIVER OVER CURRENT
SIACM RUN - START DRIVER OVER TEMP
SIACM RUN - START DRIVER OVER VOLT
SIACM RUN - START DRIVER SHORT TO GROUND

Test Note:

All symptoms listed above are diagnosed using the same tests.

The title for the tests will be RUN - START CIRCUIT TEST.

When Monitored and Set Condition:

LOSS OF IGNITION RUN - START

When Monitored:

With the ignition in the Run-Start position the module monitors the

Run-Start Driver circuit for proper system voltage.

Set Condition:

If the voltage on the Run-Start Driver circuit drops below 4.5 volts, the

code will set.

ORC RUN - START DRIVER OPEN

When Monitored:

When the ignition is turned OFF, the microprocessor 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 10 second, if the microprocessor senses 2.4 to 5.0

volts on the HSD. Note: the diagnostic voltage will only last for 60 seconds after the
ignition is turned off.

ORC RUN - START DRIVER OVER CURRENT

When Monitored:

The FCM uses a microprocessor controlled transistor (high side driver)

to supply power to the ORC. The microprocessor monitors the high side driver (HSD)
internal temperature when the ignition is in the Run or Start position.

Set Condition:

The code will set within 1 second, if the microprocessor senses high HSD

internal temperature. The high temperature is caused by over current.

92

AIRBAG

ORC RUN - START DRIVER OVER TEMP

When Monitored:

The FCM uses a microprocessor controlled transistor (high side driver)

to supply power to the ORC. The microprocessor monitors the high side driver (HSD)
internal temperature when the ignition is in the Run or Start position.

Set Condition:

The code will set within 2.5 second, if the microprocessor senses high HSD

internal temperature. The high temperature is caused by over current.

ORC RUN - START DRIVER OVER VOLT

When Monitored:

The FCM uses a microprocessor controlled transistor (high side driver)

to supply power to the ORC. The microprocessor monitors the high side driver (HSD)
battery voltage when the ignition is in the Run or Start position.

Set Condition:

The code will set if the microprocessor senses HSD battery voltage is over

30 volts.

ORC RUN - START DRIVER SHORT TO GROUND

When Monitored:

The FCM uses a microprocessor controlled transistor (high side driver)

to supply power to the ORC. The microprocessor monitors the high side driver (HSD)
circuit for short to ground when the ignition is in the Run or Start position.

Set Condition:

The code will set within 1 second, if the microprocessor senses high HSD

internal temperature. The high temperature is caused by short to ground.

SIACM RUN - START DRIVER OPEN

When Monitored:

When the ignition is turned OFF, the microprocessor controlled

transistor (high side driver) places a diagnostic voltage on the SIACM Run-Start 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 10 second, if the microprocessor senses 2.4 to 5.0

volts on the HSD. Note: the diagnostic voltage will only last for 60 seconds after the
ignition is turned off.

SIACM RUN - START DRIVER OVER CURRENT

When Monitored:

The FCM uses a microprocessor controlled transistor (high side driver)

to supply power to the SIACM. The microprocessor monitors the high side driver (HSD)
internal temperature when the ignition is in the Run or Start position.

Set Condition:

The code will set within 1 second, if the microprocessor senses high HSD

internal temperature. The high temperature is caused by over current.

SIACM RUN - START DRIVER OVER TEMP

When Monitored:

The FCM uses a microprocessor controlled transistor (high side driver)

to supply power to the SIACM. The microprocessor monitors high side driver (HSD)
internal temperature when the ignition is in the Run or Start position.

Set Condition:

The code will set within 2.5 second, if the microprocessor senses high HSD

internal temperature. The high temperature is caused by over current.

93

AIRBAG

LOSS OF IGNITION RUN - START —

Continued

SIACM RUN - START DRIVER OVER VOLT

When Monitored:

The FCM uses a microprocessor controlled transistor (high side driver)

to supply power to the SIACM circuit. The microprocessor monitors the battery voltage
when the ignition is in the run or start position.

Set Condition:

The code will set if the microprocessor senses the battery voltage is over

30 volts.

SIACM RUN - START DRIVER SHORT TO GROUND

When Monitored:

The FCM uses a microprocessor controlled transistor (high side driver)

to supply power to the SIACM. The microprocessor monitors high side driver (HSD)
internal temperature when the ignition is in the Run or Start position.

Set Condition:

The code will set within 1 second, if the microprocessor senses high HSD

internal temperature. The high temperature is caused by over current.

POSSIBLE CAUSES

ORC, LOSS OF IGNITION RUN - START

ACM, ORC RUN - START OPEN

FCM, ORC RUN - START OPEN

IPM, ORC RUN - START DRIVER OPEN

ORC RUN - START DRIVER CIRCUIT OPEN

FCM, ORC RUN - START SHORT

LEFT SIDE IMPACT AIRBAG CONTROL MODULE

RIGHT SIDE IMPACT AIRBAG CONTROL MODULE

IPM, ORC RUN - START SHORT

ORC RUN - START CIRCUIT SHORT

ACM, ORC RUN - START DRIVER CIRCUIT SHORT

FCM, SIACM RUN - START OPEN

RIGHT SIACM AND SIACM RUN - START CIRCUIT OPEN

FCM, SIACM RUN - START OPEN

FCM, SIACM RUN - START CIRCUIT SHORT

IPM, SIACM RUN - START CIRCUIT OPEN

RSIACM, RUN - START CIRCUIT OPEN

SIACM RUN - START CIRCUIT OPEN

IPM, SIACM RUN - START CIRCUIT SHORT

LSIACM, SIACM RUN - START CIRCUIT SHORT

LEFT SIACM AND SIACM RUN - START CIRCUIT OPEN

HIGH BATTERY VOLTAGE

94

AIRBAG

LOSS OF IGNITION RUN - START —

Continued