Chrysler Pacifica. Manual — part 176
TEST
ACTION
APPLICABILITY
4
WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND
WAIT TWO MINUTES BEFORE PROCEEDING.
CAUTION: DO NOT PLACE AN INTACT UNDEPLOYED AIRBAG FACE
DOWN ON A HARD SURFACE, THE AIRBAG WILL PROPEL INTO THE AIR
IF ACCIDENTALLY DEPLOYED, AND COULD RESULT IN SERIOUS OR
FATAL INJURY.
Gain access to the horn switch connector.
WARNING: TURN THE IGNITION ON, THEN RECONNECT THE BATTERY.
Momentarily connect a jumper wire between the Horn Switch Sense circuit at the
horn switch pigtail connector and ground.
Did the horns sound?
All
Yes
→ Repair or replace the wiring/horn switch as necessary.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 5
5
Disconnect the clockspring C1 connector.
Momentarily connect a jumper wire between the Horn Switch Sense circuit at the
clockspring connector and ground.
Did the horns sound?
All
Yes
→ Replace the clockspring.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 6
6
Disconnect the clockspring C1 connector.
Disconnect the Integrated Power Module C4 connector.
NOTE: Check connectors - Clean/repair as necessary.
Measure the resistance of the Horn Switch Sense circuit between the clockspring C1
connector and the Integrated Power Module C4 connector.
Is the resistance below 5.0 ohms?
All
Yes
→ Replace the Integrated Power Module.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Repair the Horn Switch Sense circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
7
Turn the ignition off.
Remove the Horn Relay from the Integrated Power Module.
Substitute the original Horn Relay with a known good relay.
Turn the ignition on.
With the DRBIII
t actuate the Horn Relay.
Do the Horns operate?
All
Yes
→ Replace the original Horn Relay.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 8
8
Disconnect each horn connector.
With the DRBIII
t, the actuate the horn relay.
Using a 12-volt test light connected to ground, check for voltage at the Horn Relay
Output circuit at each horn connector.
Does the test light illuminate brightly at both connectors?
All
Yes
→ Go To 9
No
→ Repair the Horn Relay Output circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
701
IGNITION, POWER, ACCESSORY
*HORNS INOPERATIVE —
Continued
TEST
ACTION
APPLICABILITY
9
Disconnect the Horn connector.
Using a 12-volt test light connected to 12-volts, check the Ground circuits in the horn
connectors.
Does the test light illuminate brightly?
All
Yes
→ Replace the Horns as necessary.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Repair the Ground circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
702
IGNITION, POWER, ACCESSORY
*HORNS INOPERATIVE —
Continued
Symptom List:
ABS INDICATOR OPEN
ABS INDICATOR SHORT
AIRBAG INDICATOR OPEN
AIRBAG INDICATOR SHORT
Test Note:
All symptoms listed above are diagnosed using the same tests.
The title for the tests will be ABS INDICATOR OPEN.
When Monitored and Set Condition:
ABS INDICATOR OPEN
When Monitored:
With the ignition in the Run/Start position and when requested to
illuminate by the ABS module.
Set Condition:
The Instrument Cluster software detects the voltage across the ABS
indicator LED is above 5.0 volts when ON.
ABS INDICATOR SHORT
When Monitored:
With the ignition in the Run/Start position and when requested to
illuminate by the ABS module.
Set Condition:
The Instrument Cluster software detects the voltage across the ABS
indicator LED is below 0.3 volts when ON.
AIRBAG INDICATOR OPEN
When Monitored:
With the ignition in the Run/Start position and when requested to
illuminate by the Airbag Control Module (ACM).
Set Condition:
The Instrument Cluster software detects the voltage across the Airbag
indicator LED is above 5.0 volts when ON.
AIRBAG INDICATOR SHORT
When Monitored:
With the ignition in the Run/Start position or when requested to
illuminate by the Airbag Control Module (ACM).
Set Condition:
The Instrument Cluster software detects the voltage across the Airbag
indicator LED is below 0.3 volts when ON.
POSSIBLE CAUSES
INSTRUMENT CLUSTER
703
INSTRUMENT CLUSTER
TEST
ACTION
APPLICABILITY
1
NOTE: The Instrument Cluster performs internal tests on the Airbag and
ABS indicators during each ignition cycle.
With the DRBIII
t, erase DTCs.
Turn the ignition off, wait 10 seconds, then turn the ignition on.
With the DRBIII
t, read DTCs.
Did the Indicator Open or Short DTC reset?
All
Yes
→ Replace the Instrument Cluster in accordance with the Service
Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Test Complete.
704
INSTRUMENT CLUSTER
ABS INDICATOR OPEN —
Continued
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