For 1990-2009 cars

#### Generator Battery Control Module (GBCM)

Scan Tool Parameter | Data List | Units Displayed | Typical Data Value
--- | --- | --- | ---
Operating Conditions: Ignition ON/Engine OFF
Battery Voltage Signal | Body, Generator Battery Control Module | Volts | 12.3 V
Generator L Terminal Signal Command | Body, Generator Battery Control Module | Percent | 0 Percent
Regulated Voltage Control Current Sensor | Body, Generator Battery Control Module | Amps | 1 Amp
Running State of Charge | Body, Generator Battery Control Module | Percent | 90 Percent

#### Powertrain Control Module (PCM)

Scan Tool Parameter | Data List | Units Displayed | Typical Data Value
--- | --- | --- | ---
Operating Conditions: Ignition ON/Engine OFF
Crank Request Signal | PCM, Data Display, Engine Data Display, Electrical/Theft Data | Yes/No | No
Generator L Terminal Signal Command | PCM, Data Display, Engine Data Display, Electrical/Theft Data | Off/On | Off
Generator F Terminal Signal | PCM, Data Display, Engine Data Display, Electrical/Theft Data | % | 10-90%
Ignition 1 Signal | PCM, Data Display, Engine Data Display, Electrical/Theft Data | volts | 9.6-14.4v
Starter Relay Circuit Status | PCM, Data Display, Engine Data Display, Electrical/Theft Data | Fault, Indeterminate, OK | OK
Starter Relay Command | PCM, Data Display, Engine Data Display, Electrical/Theft Data | Off/On | Off
TR Sw. | PCM, Transmission Data | Park, Reverse, Neutral, Drive 5, Drive 4, Drive 3, Drive 2, Drive 1 | Park