Operation CHARM: Car repair manuals for everyone.

Without PCM

Use the scan tool data values under the following conditions:
^ The Powertrain On-Board Diagnostic (OBD) System Check is complete
^ The On-Board Diagnostics are functioning properly
^ No DTCs are present

The values below represent a typical display recorded from a properly functioning system.

Important: Do not use a scan tool that displays faulty data. Report the condition to the scan tool manufacturer. The use of a faulty scan tool can result in misdiagnosis and the unnecessary replacement

Only the parameters listed below are used for diagnosing. If a scan tool displays other parameters, the values are not recommended by General Motors for use in diagnosis. Scan tool values below were recorded under the following conditions:
^ Engine at idle
^ Upper radiator hose hot
^ Closed throttle
^ Transmission in Park
^ Closed Loop Operation
^ Accessories OFF
^ Brake pedal not applied

Part 1 Of 2:





Part 2 Of 2:





Transmission Scan Tool Data Values (Diesel)