For 1990-2009 cars

The Transmission Scan Tool Data List contains all Transmission related parameters that are available on the scan tool. The list is arranged in alphabetical order.

Use the Transmission Scan Tool Data List only after performing the following inspections:

• | Powertrain On-Board Diagnostic System Check is completed.

• | No Diagnostic Trouble Codes (DTCs) are present.

• | On-board diagnostics are functioning properly.

Scan tool values from a properly running Transmission may be used for comparison with the Transmission you are diagnosing. The Transmission Scan Tool Data List represents values that would be seen on a normal running engine.

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

Scan Tool Parameter | Data List | Units Displayed | Typical Data Value
--- | --- | --- | ---
Engine Idling/Upper Radiator Hose Hot/Closed Throttle/Transmission in Park or Neutral/Closed Loop
A/C Relay Command | Transmission Data | On/Off | Off
A/C Request Signal | Transmission Data | Yes/No | No
Diagnostic Mode | Transmission Data | Normal/Check | Normal
Engine Load | Transmission Data | % | 19.7% to 49.3%
ECT Sensor | Transmission Data | C°/F° | 80-90°C / 176-194°F
Engine Speed | Transmission Data | RPM | 650 to 750 RPM
High Electrical Load | Transmission Data | Yes/No | No
IAT Sensor | Transmission Data | C°/F° | Varies with the underhood and ambient temperature
Loop Status | Transmission Data | Open/Closed | Closed Loop
MAF Sensor | Transmission Data | g/s |
MIL Command | Transmission Data | Yes/No | No
Overdrive Switch | Transmission Data | On/Off | On/Off
PNP (A/T only) | Transmission Data | P-N/R-D-L | P-N
Shift Request | Transmission Data | 1st | 1st
Starter Switch | Transmission Data | Released/Cranking | Released
TCC Brake Pedal Switch | Transmission Data | Released/Applied | Released
TCC Enable Solenoid Command | Transmission Data | On/Off | Off
TP Sensor | Transmission Data | % | 8-11%
Vehicle Speed Sensor | Transmission Data | km/h/MPH | 0 km/h