Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 1144
P0632-ODOMETER NOT PROGRAMMED IN PCM
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
Ignition on.
•
Set Condition:
Odometer is not programed into the PCM. One Trip Fault. Three good trips to turn off the MIL.
Possible Causes
PROGRAMMING MILEAGE INTO THE PCM
PCM
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING).
Diagnostic Test
1.
PROGRAMMING MILEAGE INTO THE PCM
Ignition on, engine not running.
With the scan tool, erase DTCs.
Using a scan tool, program the mileage into the PCM.
Start the engine.
Allow the engine to reach normal operating temperature.
With a scan tool, read DTCs.
Does the DTC reset?
Yes
>> Replace and program the Powertrain Control Module per Service Information.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
No
>> The mileage has been successfully programmed into the PCM. Test is complete.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
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ENGINE ELECTRICAL DIAGNOSTICS
LX
P0633-SKIM KEY NOT PROGRAMMED IN PCM
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
Ignition on.
•
Set Condition:
The SKIM Key information has not been programmed into the PCM. One Trip Fault. Three good trips to turn
off the MIL.
Possible Causes
PROGRAMMING SKIM KEY INTO THE PCM
PCM
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING).
Diagnostic Test
1.
PROGRAMMING SKIM KEY INTO THE PCM
Ignition on, engine not running.
With a scan tool, erase DTCs.
Using the scan tool, program the SKIM Key information into the PCM.
Start the engine.
NOTE: If the engine will not start, crank the engine over for 15 seconds. Crank at least 2 times with the
ignition switch returning to the off position each time.
Allow the engine to reach normal operating temperature.
With the scan tool, read DTCs.
Does the DTC reset?
Yes
>> Replace and program the Powertrain Control Module per Service Information.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
No
>> The SKIM KEY information has been successfully programmed into the PCM. Test is complete.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
LX
ENGINE ELECTRICAL DIAGNOSTICS
9 - 601
P0642-SENSOR REFERENCE VOLTAGE 1 CIRCUIT LOW
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
Ignition on.
•
Set Condition:
When the PCM recognizes the Primary 5-volt Supply circuit voltage is too low. One Trip Fault. ETC light is
flashing.
Possible Causes
(F855) PRIMARY 5-VOLT SUPPLY SHORTED TO GROUND
SENSOR SHORTED TO GROUND
5-VOLT SENSOR
PCM
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING).
Diagnostic Test
1.
ACTIVE DTC
Ignition on, engine not running.
With a scan tool, read DTCs.
NOTE: Improperly installed aftermarket accessories can cause this DTC to set. Check for wiring added by
customer.
Is the DTC active at this time?
Yes
>> Go To 2
No
>> Refer to the INTERMITTENT CONDITION Diagnostic Procedure.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
2.
(F855) PRIMARY 5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND
Turn the ignition off.
Disconnect the PCM harness connectors.
Disconnect all the Sensors that share the (F855) Primary 5-volt Supply
circuit.
Measure the resistance between ground and the (F855) Primary 5-volt
Supply circuit in the CKP Sensor harness connector.
Is the resistance below 100 ohms?
Yes
>> Repair the short to ground in the (F855) Primary 5-volt
Supply circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer
to 9 - ENGINE - STANDARD PROCEDURE)
No
>> Go To 3
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ENGINE ELECTRICAL DIAGNOSTICS
LX
3.
5-VOLT SENSOR
Turn the ignition off.
Reconnect all the previously disconnected Sensors except for the CKP
Sensor harness connector.
Ignition on, engine not running.
Measure the voltage on the (F855) Primary 5-volt Supply circuit in the
CKP Sensor harness connector.
Is the voltage below 4.5 volts?
Yes
>> Go To 4
No
>> Replace the CKP Sensor.
Perform the POWERTRAIN VERIFICATION TEST. (Refer
to 9 - ENGINE - STANDARD PROCEDURE)
4.
5-VOLT SENSOR SHORTED TO GROUND
Measure the voltage on the (F855) Primary 5-volt Supply circuit at the
CKP Sensor harness connector.
CAUTION: You must Turn the Ignition OFF when disconnecting
any of the Sensor harness connectors and Turn the Ignition On to
check the voltage readings.
While monitoring the voltage, disconnect each Sensor harness connec-
tor that shares the (F855) Primary 5-volt Supply circuit, one at a time.
NOTE: Reconnect all the Sensors and clear all trouble codes
before continuing.
Does the voltage increase above 4.5 volts when disconnecting
any of the remaining Sensors?
Yes
>> Replace the Sensor that causes the (F855) Primary 5-volt
Supply circuit voltage to increase when disconnected.
Perform the POWERTRAIN VERIFICATION TEST. (Refer
to 9 - ENGINE - STANDARD PROCEDURE)
No
>> Go To 5
5.
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)
LX
ENGINE ELECTRICAL DIAGNOSTICS
9 - 603
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