Page 673 of 5267
P0500-NO VEHICLE SPEED SENSOR SIGNAL
For a complete wiring diagramRefer to Section 8W.
Page 677 of 5267

P0513-SKIM INVALID KEY ERROR
For a complete wiring diagramRefer to Section 8W.
When Monitored:
Key on
Set Condition:
Invalid Key Code received from SKIM Module
Possible Causes
GENERAL NETWORK ERROR
KEY NOT PROGRAMMED
INCORRECT KEY
INCORRECT VIN IN ECM ORSKIM
LOSSS OF COMMUNICATION BETWEEN ECM AND SKIM
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 the scan tool, read the ECM DTCs.
Is the DTC active at this time?
Ye s>>
Go To 2
No>>
Go To 6
2.NO COMMUNICATION WITH SKIM
With the scan tool, attempt to communicate with the SKIM.
Can the scan tool communicate with the SKIM?
Ye s>>
Go To 3
No>>
Refer to Section 8 - Electrical VEHICLE THEFT SECURITY - ELECTRICAL DIAGNOSTICS and perform
the appropriate Diagnostic Procedure.
Perform SKIM VERIFICATION. (Refer to 8 - ELECTRICAL/VEHICLE THEFT SECURITY - STANDARD
PROCEDURE)
3.SKIM TROUBLE CODES SET
With the scan tool, check for SKIM DTCs.
Are any DTCs present in the SKIM?
Ye s>>
Refer to Section 8 - Electrical VEHICLE THEFT SECURITY - ELECTRICAL DIAGNOSTICS and perform
the appropriate Diagnostic Procedure.
Perform SKIM VERIFICATION. (Refer to 8 - ELECTRICAL/VEHICLE THEFT SECURITY - STANDARD
PROCEDURE)
No>>
Go To 4
Page 679 of 5267
P0514-BAT TEMPERATURE SENSOR RATIONALITY
For a complete wiring diagramRefer to Section 8W.
Page 680 of 5267
When Monitored:
While the engine is running.
Set Condition:
The ECM does not read a change in value from the sensor over time.
Possible Causes
BATTERY TEMP SENSOR
INTERMITTENT CONDITION
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
Diagnostic Test
1.BATTERY TEMP SENSOR
Remove the temperature sensor and reconnect the wiring harness connectorto the sensor.
Monitor scan tool, while heating the sensor with an external heat source (DO NOT USE OPEN FLAME).
Does the reading from the sensor increase at least 5 degrees F. on the scan tool?
Ye s>>
Refer to the INTERMITTENT CONDITION Symptom (Diagnostic Procedure). (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
No>>
Replace the battery temperature sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)
Page 681 of 5267
P0516-LOW VOLTAGE AT THE BAT TEMP SENSOR
For a complete wiring diagramRefer to Section 8W.
Page 685 of 5267
P0517-HIGH VOLTAGE AT THE BAT TEMP SENSOR
For a complete wiring diagramRefer to Section 8W.
Page 689 of 5267
P0521-OIL PRESSURE SWITCH RATIONALITY
For a complete wiring diagramRefer to Section 8W.
Page 692 of 5267
P0524-OIL PRESSURE TOO LOW
For a complete wiring diagramRefer to Section 8W.