Chrysler Town, Dodge Caravan. Manual — part 714
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
POSSIBLE CAUSES
FCM, RUN - START OVER VOLTAGE
RIGHT SIACM, SIACM RUN - START CIRCUIT SHORT
SIACM RUN - START CIRCUIT SHORT
STORED CODE OR INTERMITTENT CONDITION
ACTIVE CODE PRESENT
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 MODULE AND DTC TYPE:
All
ACM - ACTIVE DTC
ACM - STORED DTC
LEFT SIACM - ACTIVE DTC
WARNING: TURN THE IGNITION OFF, DISCONNECT THE
BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING.
Replace the Left Side Impact Airbag Control Module in accordance
with Service Instructions.
Perform AIRBAG VERIFICATION TEST - VER 1.
LEFT SIACM - STORED DTC
RIGHT SIACM - ACTIVE DTC
WARNING: TURN THE IGNITION OFF, DISCONNECT THE
BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING.
Replace the Right Side Impact Airbag Control Module in accor-
dance with Service Instructions.
Perform AIRBAG VERIFICATION TEST - VER 1.
RIGHT SIACM - STORED DTC
FCM - ACTIVE DTC
FCM - 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 FCM DTC’s.
Are there any active ORC RUN - START DRIVER DTC’s?
All
Yes
→ Go To 3
No
→ WARRING: TURN THE IGNITION OFF, DISCONNECT THE
BATTERY AND WAIT TWO MINUTES BEFORE PROCEED-
ING. Replace the Airbag Control Module in accordance with
Service Instructions.
Perform AIRBAG VERIFICATION TEST - VER 1.
95
AIRBAG
LOSS OF IGNITION RUN - START —
Continued
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