Chrysler Crossfire. Manual — part 838
REAR SPOILER MOTOR FAILURE (CONTINUED)
When Monitored and Set Condition
•
When Monitored: Continuous.
•
Set Condition: The Body Control Module (BCM) reports a Rear Spoiler Motor failure.
POSSIBLE CAUSES
REAR SPOILER DRIVER (UP) CIRCUIT SHORTED TO B(+)
REAR SPOILER DRIVER (DOWN) CIRCUIT SHORTED TO B(+)
REAR SPOILER DRIVER (UP) CIRCUIT SHORTED TO GROUND
REAR SPOILER DRIVER (DOWN) CIRCUIT SHORTED TO GROUND
REAR SPOILER DRIVER (UP) CIRCUIT OPEN
REAR SPOILER DRIVER (DOWN) CIRCUIT OPEN
REAR SPOILER MOTOR
For a complete Rear Spoiler Circuit Diagram, (Refer to 23 - BODY - SCHEMATICS AND DIAGRAMS).
Diagnostic Test
1.
OPEN REAR SPOILER DRIVER (UP) CIRCUIT
Turn the ignition off.
Disconnect the BCM C4 harness connector.
Disconnect the Rear Spoiler Motor harness connector.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance of the Rear Spoiler Driver (Up) circuit from the
BCM C4 harness connector to the Rear Spoiler Motor harness con-
nector.
Is the resistance below 5.0 ohms?
Yes
>> Go to 2
No
>> Repair the Rear Spoiler Driver (Up) circuit for an open.
Perform REAR SPOILER VERIFICATION TEST.
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BODY - ELECTRICAL DIAGNOSTICS
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REAR SPOILER MOTOR FAILURE (CONTINUED)
2.
OPEN REAR SPOILER DRIVER (DOWN) CIRCUIT
With the ignition off.
Measure the resistance of the Rear Spoiler Driver (Down) circuit from
the BCM C4 harness connector to the Rear Spoiler Motor harness
connector.
Is the resistance below 5.0 ohms?
Yes
>> Go to 3
No
>> Repair the Rear Spoiler Driver (Down) circuit for an open.
Perform REAR SPOILER VERIFICATION TEST.
3.
REAR SPOILER DRIVER (UP) CIRCUIT SHORT TO B(+)
Turn the ignition on.
Measure the voltage of the Rear Spoiler Driver (Up) circuit at the Rear
Spoiler Motor harness connector.
Is the voltage above 1.0 volt?
Yes
>> Repair the Rear Spoiler Driver (Up) circuit for a short to
B(+).
Perform REAR SPOILER VERIFICATION TEST.
No
>> Go to 4
4.
REAR SPOILER DRIVER (DOWN) CIRCUIT SHORT TO B(+)
With the ignition on.
Measure the voltage of the Rear Spoiler Driver (Down) circuit at the
Rear Spoiler Motor harness connector.
Is the voltage above 1.0 volt?
Yes
>> Repair the Rear Spoiler Driver (Down) circuit for a short to
B(+).
Perform REAR SPOILER VERIFICATION TEST.
No
>> Go to 5
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BODY - ELECTRICAL DIAGNOSTICS
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REAR SPOILER MOTOR FAILURE (CONTINUED)
5.
REAR SPOILER DRIVER (UP) CIRCUIT SHORT TO GROUND
Turn the ignition off.
Measure the resistance between ground and the Rear Spoiler Driver
(Up) circuit at the Rear Spoiler Motor harness connector.
Is the resistance below 100k ohms?
Yes
>> Repair the Rear Spoiler Driver (Up) circuit for a short to
ground.
Perform REAR SPOILER VERIFICATION TEST.
No
>> Go to 6
6.
REAR SPOILER DRIVER (DOWN) CIRCUIT SHORT TO GROUND
With the ignition off.
Measure the resistance between ground and the Rear Spoiler Driver
(Down) circuit at the Rear Spoiler Motor harness connector.
Is the resistance below 100k ohms?
Yes
>> Repair the Rear Spoiler Driver (Down) circuit for a short to
ground.
Perform REAR SPOILER VERIFICATION TEST.
No
>> Replace the Rear Spoiler Motor.(Refer to 23 - BODY/EX-
TERIOR/SPOILER - REMOVAL).
Perform REAR SPOILER VERIFICATION TEST.
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BODY - ELECTRICAL DIAGNOSTICS
23 - 25
* REAR SPOILER INOPERATIVE
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BODY - ELECTRICAL DIAGNOSTICS
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