Scan Tool Data List
Body Control Module (BCM)
| Scan Tool Parameter | Data List | Units Displayed | Typical Data Value |
|---|---|---|---|
| Ignition ON/Engine Running | |||
| Battery Voltage Signal | Data | Volts | 13.9 Volts |
| Ignition Mode Switch | Data | IDLE/ACC/OFF/CRANK | IDLE |
Engine Control Module (ECM) 4.4L (LC3)
| Scan Tool Parameter | Data List | Units Displayed | Typical Data Value |
|---|---|---|---|
| Ignition ON/Engine OFF | |||
| Crank Request Signal | Engine Electrical | Yes/No | No |
| GEN F-Terminal Signal | Engine Electrical | % | 0% |
| GEN L-Terminal Signal Command | Engine Electrical | On/Off | Off |
| GEN L-Terminal Circuit Status | Engine Electrical | Incomplete/Short Gnd/Open/Short to B+/OK | OK |
| Ignition 1 Signal | Engine Electrical | Volts | Varies |
| PNP Switch | Engine Electrical | Park/Neutral/In Gear | Park |
| Starter Relay Command | Engine Electrical | On/Off | Off |
| Starter Relay Circuit Status | Engine Electrical | Incomplete/Short Gnd/Open/Short to B+/OK | OK |
Engine Control Module (ECM) 4.6L (LH2)
| Scan Tool Parameter | Data List | Units Displayed | Typical Data Value |
|---|---|---|---|
| Ignition ON/Engine OFF | |||
| Crank Request Signal | Engine Electrical | Yes/No | No |
| GEN F-Terminal Signal | Engine Electrical | % | 0% |
| GEN L-Terminal Signal Command | Engine Electrical | On/Off | Off |
| Ignition 1 Signal | Engine Electrical | Volts | Varies |
| PNP Switch | Engine Electrical | Park/Neutral/In Gear | Park |
| Starter Relay Command | Engine Electrical | On/Off | Off |
| Starter Relay Circuit Status | Engine Electrical | Fault/Indeterminate/OK | OK |
Sensing and Diagnostic Module (SDM)
| Scan Tool Parameter | Data List | Units Displayed | Typical Data Value |
|---|---|---|---|
| Ignition ON/Engine Running | |||
| Battery Voltage Signal | Data | Volts | 13.9 Volts |
Transmission Control Module (TCM)
| Scan Tool Parameter | Data List | Units Displayed | Typical Data Value |
|---|---|---|---|
| Ignition ON/Transmission in Park | |||
| IMS | Data | 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 |