GM Service Manual Online
For 1990-2009 cars only

Powertrain Control LA1

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON/Engine OFF

Crank Request Signal

Engine Data 2

On/Off

Off

GEN F-Terminal Signal

Engine Data 2

OK/No Output

No Output

GEN L-Terminal Signal Command

Engine Data 2

%

0%

Ignition 1 Signal

Engine Data 1,2

Volts

12.6 V

Starter Enable Relay Circuit Status

Output Driver Data

Fault/OK/Invalid State

OK

Starter Relay Command

Engine Data 2

Disabled/Enabled

Disabled

Powertrain Control L36

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON/Engine OFF

GEN F-Terminal Signal

Engine Data 2

OK/No Output

No Output

GEN L-Terminal Signal Command

Engine Data 2

%

0%

Ignition 1 Signal

Engine Data 1,2

Volts

12.6 V

Starter Enable Relay Circuit Status

Output Driver Data

Fault/OK/Invalid State

OK

Starter Relay Command

Engine Data 2

Disabled/Enabled

Disabled

Body Control Module (BCM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON/Engine OFF

Electronics Battery Feed

Data

Volts

12.6 Volts

Load Management Status

Outputs

Active / Inactive

Inactive

Inadvertent Power Relay

Outputs

On/Off

On