Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 1136
9.
PCM
NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal
push out. Repair as necessary.
Using the schematics as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and
Ground circuits.
Were there any problems found?
Yes
>> Repair as necessary.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
No
>> Replace and program the Powertrain Control Module per Service Information.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
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ENGINE ELECTRICAL DIAGNOSTICS
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P0579–SPEED CONTROL MULTIPLEXED SWITCH #1 PERFORMANCE
For a complete wiring diagram Refer to Section 8W.
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ENGINE ELECTRICAL DIAGNOSTICS
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•
When Monitored:
Continuously with the ignition on.
•
Set Condition:
The Steering Column Control Module (SCCM) has detected that the Speed Control Switch #1 is not operating
properly.
Possible Causes
INTERMITTENT SPEED CONTROL SWITCH 1/2 STUCK DTC
SPEED CONTROL SWITCH
STEERING COLUMN CONTROL MODULE (SCCM)
Diagnostic Test
1.
DTC IS ACTIVE
NOTE: If P0562–BATTERY VOLTAGE LOW or P0563–BATTERY VOLTAGE HIGH is set along with this DTC,
diagnose the battery voltage DTC first.
Ignition on, engine not running.
With the Scan Tool, select View DTCs in the Steering Column Control Module.
Is the DTC status Active at this time?
Yes
>> Go to 2
No
>> Go to 4
2.
SPEED CONTROL SWITCH
Turn the ignition off.
Replace the Speed Control Switch in accordance with the Service Information.
Turn the ignition on.
Move the Speed Control Switch to each position several times.
With the Scan Tool, Clear Stored DTCs in the Steering Column Control Module.
With the Scan Tool, select View DTCs in the Steering Column Control Module.
Move the Speed Control Switch to each position several times while monitoring the Scan Tool.
Does this DTC reset?
Yes
>> Go To 3
No
>> Test Complete.
3.
STEERING COLUMN CONTROL MODULE (SCCM)
View repair.
Repair
Replace the Steering Column Control Module (SCCM) in accordance with the Service Information.
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ENGINE ELECTRICAL DIAGNOSTICS
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4.
INTERMITTENT SPEED CONTROL SWITCH 1/2 STUCK DTC
The conditions necessary to set this DTC are not present at this time.
While monitoring the scan tool data relative to this circuit, move the Speed Control Switch to each position several
times.
Look for the DTC to reset while the switch is being moved to each position.
Were any problems found?
Yes
>> Repair as necessary.
No
>> Test complete.
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ENGINE ELECTRICAL DIAGNOSTICS
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