For 1990-2009 cars

#### Body Control Module (BCM)

Scan Tool Parameter | Data List | Units Displayed | Typical Data Value
--- | --- | --- | ---
Ignition ON/Engine Running
Battery Low at Start | Data Display/ Charging Info | Yes/No | No
Batt. Open Ckt. Tested | Data Display/ Charging Info | Yes/No | No
Batt. Open Ckt. Voltage | Data Display/ Charging Info | Volts | 13.03 Volts
Battery Voltage | Data Display/ Charging Info | Volts | 13.9 Volts
Batt. Voltage High Res. | Data Display/ Charging Info | Volts | 12.417 Volts
Parasitic Current | Data Display/ Charging Info | Amps | 0.0 Amps
Prev. State of Charge | Data Display/ Charging Info | % | 90%
Start Up State of Charge | Data Display/ Charging Info | % | 80%
State of Charge | Data Display/ Charging Info | % | 85%
State of Charge Low | Data Display/ Charging Info | Yes/No | No

#### Digital Radio Receiver (DRR)

Scan Tool Parameter | Data List | Units Displayed | Typical Data Value
--- | --- | --- | ---
Ignition ON/Engine Running
Battery Voltage | Data Display | Volts | 13.9 Volts

#### Engine Control Module (ECM)

Scan Tool Parameter | Data List | Units Displayed | Typical Data Value
--- | --- | --- | ---
Ignition ON/Engine OFF
Crank Request Signal | Electrical/Theft Data | Yes/No | No
GEN F-Terminal Signal | Electrical/Theft Data | % | 0%
GEN L-Terminal Signal Command | Electrical/Theft Data | ON / OFF | OFF
GEN L-Terminal Circuit Status | Electrical/Theft Data | Incomplete/Short Gnd/Open/Short to B+/OK | OK
Ignition 1 Signal | Electrical/Theft Data | Volts | Varies
PNP Switch | Electrical/Theft Data | Park/Neutral/In Gear | Park
Starter Relay Command | Electrical/Theft Data | On/Off | Off
Starter Relay Circuit Status | Electrical/Theft Data | Incomplete/Short Gnd/Open/Short to B+/OK | OK

#### Instrument Panel Cluster (IPC)

Scan Tool Parameter | Data List | Units Displayed | Typical Data Value
--- | --- | --- | ---
Ignition ON/Engine Running
Battery Voltage | Data Display | Volts | 13.9 Volts

#### Vehicle Theft Deterrent (VTD)

Scan Tool Parameter | Data List | Units Displayed | Typical Data Value
--- | --- | --- | ---
Ignition ON
Ignition Voltage Signal | Data Display | Present / Not Present | Present
Start Disabled | Data Display | Yes/No | No

#### Sensing Diagnostic Module (SDM)

Scan Tool Parameter | Data List | Units Displayed | Typical Data Value
--- | --- | --- | ---
Ignition ON/Engine Running
Battery Voltage Signal | Data Display | Volts | 13.9 Volts

#### Transmission Control Module (TCM)

Scan Tool Parameter | Data List | Units Displayed | Typical Data Value
--- | --- | --- | ---
Ignition ON/Transmission in Park
IMS | Engine Electrical | Park, Park/Reverse, Reverse, Reverse/Neutral, Neutral, Neutral/Drive 4, Drive 4, Drive 4/Drive 3, Drive 3, Drive 3/Drive 2, Drive 2, Drive 2/Drive 1, Drive 1, INVALID, OPEN | Park