For 1990-2009 cars

#### Body Control Module (BCM)

Scan Tool Parameter | Data List | Units Displayed | Typical Data Value
--- | --- | --- | ---
Operating Conditions: Ignition ON/Engine OFF
Battery Voltage Signal | BCM/Power Mode | Volts | 12.6 Volts
Idle Boost Level | BCM/Power Mode | Amps | 27 Amps
Run/Crank Relay | BCM/Power Mode | Active/Inactive | Inactive
Run/Crank Relay Command | BCM/Power Mode | On/Off | On

#### Engine Control Module (ECM)

Scan Tool Parameter | Data List | Units Displayed | Typical Data Value
--- | --- | --- | ---
Operating Conditions: Ignition ON/Engine OFF
Clutch Start Switch (If equipped) | Electrical/Theft Data | Released/Applied | Released
Crank Request Signal | Electrical/Theft Data | Yes/No | No
GEN F-Terminal Signal | Electrical/Theft Data | % | 0%
GEN-L Terminal Circuit Status | Electrical/Theft Data | Incomplete, Short Gnd / Open, Short to B+, OK | OK
GEN L-Terminal Signal Command | Electrical/Theft Data | On/Off | Off
Ignition 1 Signal | Electrical/Theft Data | Volts | 12.6 Volts
Ignition Accessory Signal | Electrical/Theft Data | On/Off | On
PNP Switch (If equipped) | Electrical/Theft Data | Park/Neutral, In Gear | Park/Neutral
Starter Relay Circuit Status | Electrical/Theft Data | Incomplete, Short Gnd / Open, Short to B+, OK | OK
Starter Relay Command | Electrical/Theft Data | On/Off | Off

#### Transmission Control Module (TCM)

Scan Tool Parameter | Data List | Units Displayed | Typical Data Value
--- | --- | --- | ---
Operating Conditions: Ignition ON/Engine OFF
IMS | Transmission Data | Invalid, Drive 3\Drive 2, Drive 2, Reverse\Neutral, Neutral, Drive 5, Park\Reverse, Park, Drive 3, Drive \Drive 3, Reverse, Park\Reverse, Drive 5\Drive 4, Drive 4 | Park