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Transmission Control Module Scan Tool Information

Transmission Control Module Scan Tool Information


The transmission control module (TCM) scan tool data parameters list contains all TCM related parameters that are available on the scan tool. The list is arranged in alphabetical order. A given parameter may appear in any one of the data lists.

Transmission Control Module Scan Tool Data Parameters

Parameter System State Expected Value Description
Operating Conditions: Ignition ON

Accelerator Pedal Position

Accelerator Pedal Released

0%

The scan tool displays the accelerator pedal position in percent pending on the position of the pedal.

Accelerator pedal pushed down

100%

Actual Engine Torque

-

0-410 Nm (0-302 lb ft)

The scan tool displays the actual engine torque.

Brake Band Pressure Control Solenoid Valve Current

Selector switch in P

1 000 mA

The scan tool displays the solenoid valve current.

Brake Pedal Switch

Brake pedal released

Inactive

The scan tool displays Inactive or Active depending on the state of the brake pedal.

Brake pedal applied

Active

Clutch Pressure Control Solenoid Valve 1 Current

Selector switch in P

1 000 mA

The scan tool displays the solenoid valve current.

Clutch Pressure Control Solenoid Valve 2 Current

Selector switch in P

1 000 mA

The scan tool displays the solenoid valve current.

Clutch Pressure Control Solenoid Valve 3 Current

Selector switch in P

1 000 mA

The scan tool displays the solenoid valve current.

Control Module Voltage Signal

-

11-14 V

The scan tool displays in volts the current battery voltage.

Current Gear

Selector lever in position P, R, N, D

P, R, N, D

The scan tool displays the actual gear selected.

Descent Mode

-

Inactive

The scan tool displays the descent mode active or inactive.

Downshift Protection

-

Inactive

The scan tool displays the descent mode active or inactive. When the preventive downshift protection function became "active" at the first time after ignition ON, the parameter will be set and will kept up until ignition OFF.

Driver Shift Control Mode

Selector switch in D

Inactive

The scan tool displays the driver shift control mode is active or inactive

Selector switch in +/-

Active

Driver Shift Control Mode Switch

Selector switch in D

Inactive

The scan tool displays the driver shift control mode is active or inactive as a CAN signal

Selector switch in +/-

Active

Driver Shift Request

Selector switch +

Shift Up

The scan tool displays the driver shift request

Selector switch -

Shift Down

Engine Speed

Engine running at idle speed

800-950 RPM

The scan tool displays the actual engine speed.

Gear Ratio

-

0.0:1

The scan tool displays the actual gear ratio.

Ignition Voltage Signal

-

11-14 V

The scan tool displays in volts the current ignition voltage.

Kickdown Mode

Accelerator Pedal Released

Inactive

The scan tool displays the kickdown request.

Accelerator Pedal actuated to full load

Active

Kickdown Switch

Accelerator Pedal Released

Inactive

The scan tool displays the kickdown switch status.

Accelerator Pedal actuated to full load

Active

Line Pressure Control Solenoid Valve Current

-

1 000 mA

The scan tool displays the Line Pressure Control Solenoid Valve Current.

Neutral Idle Mode

Engine running at idle speed.

Accelerator pedal not actuated

Inactive

The scan tool displays the Neutral Idle Mode.

Engine running at idle speed.

Selector lever in position D

Active

Power Mode Status

-

Active

The scan tool displays if the unlock hardwire input to the controller is active or not.

Shift Solenoid Valve 1

Selector lever in position D

On

Shift Solenoid Valve switches only briefly to On while shifting.

The scan tool displays the Shift Solenoid Valve 1.

Selector lever in position P

Off

Shift Solenoid Valve 2

Selector lever in position D

On

Shift Solenoid Valve switches only briefly to On while shifting.

The scan tool displays the Shift Solenoid Valve 2.

Selector lever in position R

Off

Sport Mode

Selector lever in position D

Inactive

The scan tool displays the sport mode status.

Sport Program key pressed

Active

Sport Mode Switch

Selector lever in position D

Inactive

The scan tool displays the sport mode switch status.

Sport Program key pressed

Active

TCC Control

Engine running at idle speed.

Selector lever in position P

Disengaging

The scan tool displays the Transmission Torque Converter Clutch (TCC) Status.

TCC Pressure Control Solenoid Valve Current

Engine running at idle speed.

Selector lever in position P

200-300 mA

The scan tool displays the TCC Pressure Control Solenoid Valve Current.

TCC Slip Speed

Engine running at idle speed.

Selector lever in position P

0 RPM

The scan tool displays the TCC Slip Speed.

Transmission Fluid Temperature

Engine running at idle speed.

Selector lever in position P

60-80°C

The scan tool displays the transmission oil temperature.

Transmission (ISS)

Engine running at idle speed.

Selector lever in position P

700-950 RPM

The scan tool displays the transmission input shaft speed.

Transmission (OSS)

Engine running at idle speed.

Selector lever in position P

0 km/h (0 MPH)

The scan tool displays the transmission output shaft speed.

Transmission Range Switch

Selector lever in position P, R, N, D

P, R, N, D

The scan tool displays the Transmission Range Selector Position.

Transmission Shift Mode

-


Economy Mode

Sport Mode

Warm-Up

Winter Mode

Cruise Control Mode


There are a number of shift patterns that the TCM selects from. This scan tool display shows which pattern is currently used.

Vehicle Speed

-

0 km/h (0 MPH)

The scan tool displays km/h (MPH) depending on the current speed of the vehicle.

Warm-Up Mode

Engine running at idle speed, operating temperature.

Inactive

The scan tool displays the status of the warm-up mode.




Transmission Control Module Scan Tool Output Controls

Output Control Description
Brake Band Pressure Control Solenoid Valve

Transmission selector switch in P or N. Command the TCM brake band pressure Increase or Decrease.

Clutch Pressure Control Solenoid Valve 1


The TCM commands the Clutch Pressure Control Solenoid Valve in order to increase and decrease the clutches.

The solenoid remains increase until commanded decrease, and vice versa. When the output control is exited, the solenoid state is determined by the TCM.

When the ignition is ON, and the engine is OFF, there are no limits to this control.


Clutch Pressure Control Solenoid Valve 2

Clutch Pressure Control Solenoid Valve 3

Line Pressure Control Solenoid Valve


The scan tool is used to request pressure in increments of 207 kPa (30 PSI) from 0-1 862 kPa (0-270 PSI). The TCM will then command the solenoid to achieve the requested pressure.

When the ignition is ON, and the engine is OFF, the pressure request may be controlled within calibrated limits. There are no limits to the output control when the engine is OFF.


Solenoid Valve 1


The TCM commands Solenoid Valve 1 and Solenoid Valve 2 Active and Inactive.

When the ignition is ON, and the engine is OFF, there are no limits to this control. The solenoid remains Active until commanded Inactive, and vice versa. When the output control is exited, the solenoid state is determined by the TCM.


Solenoid Valve 2

TCC Solenoid Valve

Transmission selector switch in P or N. Command the TCM TCC solenoid valve Increase or Decrease.