FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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Scan Tool Data Definitions



Scan Tool Data Definitions

Battery Voltage Signal
- The scan tool displays 0-20 volts. The scan tool displays the voltage as received by the module.

Crank Request Signal
- The scan tool displays Yes/No. The scan tool displays No until the ignition is placed into the START position, then Yes is displayed.

Generator L Terminal Signal Command
- The scan tool displays On/Off. The scan tool displays Off until the engine is running, at which time it will display On.

Generator F Terminal Signal
- The scan tool displays 0-100 percent. The scan tool displays 0-5 percent until the engine is running, then the percentage value varies depending on electrical loads.

Ignition 1 Signal
- The scan tool displays system voltage received by the module.

Starter Relay Circuit Status
- The scan tool displays Fault, Indeterminate and OK. The scan tool displays the status of the starter relay circuit.

Starter Relay Command
- The scan tool displays Off/On. The scan tool displays Off until engine start has been requested, then it displays On.

TR Sw
- The scan tool displays Park, Reverse, Neutral, Drive 5, Drive 4, Drive 3, Drive and Drive 1. The scan tool displays the position of the transmission range switch.