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For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2001 🢒 Catera 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L30-E 🢒 Scan Tool Output Controls

Important: Do not attempt to diagnose a "Lost Communications with Vehicle" scan tool message that is displayed during transmission output control activation. The TCM is programmed to interrupt communication with the scan tool when an attempt is made to activate output controls without first meeting the enabling conditions or if output control limits are exceeded.

Scan Tool Output Control

Additional Menu Selection(s)

Description

Band Apply Solenoid

F8
    • The TCM commands the Band Apply Solenoid to a duty cycle of 0% or 100%. The value of the Band Apply solenoid scan tool parameter should match the commanded state.
    • Output control may be initiated if the following enabling conditions are met.
       - The engine speed is less than 1000 RPM.
       - The vehicle speed is less than 5 mph (8 km/h)
       - The transmission range selector lever is in P or N.
    • Once output control is initiated successfully, the commanded state of the Band Apply Solenoid may not be changed unless the enabling conditions are met.
    • Output control may be cancelled at any time by pressing the EXIT key on the scan tool. When you exit output control, the TCM determines the commanded state of the Band Apply Solenoid.

PC Solenoid

F6
    • The TCM commands the amperage (current) to the pressure control solenoid in order to control transmission line pressure. As the amperage increases, the line pressure decreases. The amperage range is 0.01-1.10 and may commanded in 0.1 amp increments.
    • Output control may be initiated if the following enabling conditions are met.
       - The engine speed is less than 1000 RPM.
       - The vehicle speed is less than 5 mph (8 km/h)
       - The transmission range selector lever is in P or N.
    • Output control may be cancelled at any time by pressing the EXIT key on the scan tool. When you exit output control, the TCM determines the commanded state of the pressure control solenoid.

Power Control Relay

F4
    • The TCM commands the Power Control Relay ON or OFF. The value of the Power Control Relay scan tool parameter should match the commanded state.
    • Output control may be initiated if the following enabling conditions are met.
       - The engine speed is less than 1000 RPM.
       - The vehicle speed is less than 5 mph (8 km/h)
       - The transmission range selector lever is in P or N.
    • When the Power Control Relay is commanded OFF, the transmission operates in default mode. See Default Mode Operation in Electronic Component Description .
    • Output control may be cancelled at any time by pressing the EXIT key on the scan tool. When you exit output control, the TCM determines the commanded state of the Power Control Relay.

Sport Mode Lamp

F1
    • The TCM commands the Sport Mode Lamp ON and OFF. The value of the Sport Mode Lamp scan tool parameter should match the commanded state.
    • Output control may be initiated if the ignition is ON.
    • Output control may be cancelled at any time by pressing the EXIT key on the scan tool. When you exit output control, the TCM determines the commanded state of all TCM outputs.
    • The Sport Mode shift program is not enabled by this output control.
    • The scan tool output control overrides TCM control of the Sport Mode Lamp when the Sport Mode shift program is selected.

STL (Early 1999 production and prior only)

F7
    • The TCM commands the Service Transmission Lamp ON and OFF. The value of the Service Transmission Lamp scan tool parameter should match the commanded state.
    • Output control may be initiated if the ignition is ON.
    • Output control may be cancelled at any time by pressing the EXIT key on the scan tool. When you exit output control, the TCM determines the commanded state of the Service Transmission Lamp.

TCC Control Solenoid

F3
    • The TCM commands the TCC Control Solenoid ON or OFF. The value of the TCC control Solenoid scan tool parameter should match the commanded state.
    • Output control may be initiated if the following enabling conditions are met.
       - The engine speed is less than 1000 RPM.
       - The vehicle speed is less than 5 mph (8 km/h)
       - The transmission range selector lever is in P or N.
    • Once output control is initiated successfully, the commanded state of the TCC Control Solenoid may not be changed unless the enabling conditions are met.
    • The TCC Control Solenoid is fed with second clutch fluid pressure. The TCC will not apply until the 1-2 upshift. The TCC will release when the TCM commands the 2-1 downshift.
    • Output control may be cancelled at any time by pressing the EXIT key on the scan tool. When you exit output control, the TCM determines the commanded state of the TCC Control Solenoid.

Winter Mode Lamp

F0
    • The TCM commands the Winter Mode Lamp ON and OFF. The value of the Winter Mode Lamp scan tool parameter should match the commanded state.
    • Output control may be initiated if the ignition is ON.
    • Output control may be cancelled at any time by pressing the EXIT key on the scan tool. When you exit output control, the TCM determines the commanded state of all TCM outputs.
    • The Winter Mode shift program is not enabled by this output control.
    • The scan tool output control overrides TCM control of the Winter Mode Lamp when the Winter Mode shift program is selected.

1-2/3-4 Shift Solenoid

F2
    • The TCM commands the 1-2/3-4 shift solenoid ON or OFF. The value of the 1-2/3-4 solenoid scan tool parameter should match the commanded state. The value of the Commanded Gear scan tool parameter should correspond with the shift solenoid combination. Refer to Shift Solenoid Valve State and Gear Ratio .
    • Output control may be initiated if the following enabling conditions are met.
       - The engine speed is less than 1000 RPM.
       - The vehicle speed is less than 5 mph (8 km/h)
       - The transmission range selector lever is in P or N.
    • Once output control is initiated successfully, the commanded state of the 1-2/3-4 shift solenoid may not be changed unless the enabling conditions are met.
    • Output control may be cancelled at any time by pressing the EXIT key on the scan tool. When you exit output control, the TCM determines the commanded state of the 1-2/3-4 shift solenoid.

2-3 Solenoid

F5
    • The TCM commands the 2-3 shift solenoid ON or OFF. The value of the 2-3 solenoid scan tool parameter should match the commanded state. The value of the Commanded Gear scan tool parameter should correspond with the shift solenoid combination. Refer to Shift Solenoid Valve State and Gear Ratio .
    • Output control may be initiated if the following enabling conditions are met.
       - The engine speed is less than 1000 RPM.
       - The vehicle speed is less than 5 mph (8 km/h)
       - The transmission range selector lever is in P or N.
    • Once output control is initiated successfully, the commanded state of the 2-3 shift solenoid may not be changed unless the enabling conditions are met.
    • Output control may be cancelled at any time by pressing the EXIT key on the scan tool. When you exit output control, the TCM determines the commanded state of the 2-3 solenoid.