For 1990-2009 cars only
1-2/3-4 Solenoid: Displays ON/OFF. This parameter is the commanded status of the
1-2/3-4 shift solenoid. When the TCM commands first or fourth gear, the scan
tool should display OFF. When the TCM commands second or third gear, the scan
tool should display ON.
2-3 Solenoid: Displays ON/OFF. This parameter is the commanded status of the 2-3 shift solenoid. When the TCM commands first or second gear, the scan tool should display ON. When the TCM commands third or fourth gear, the scan tool should display OFF.
Accelerator Pedal Position: Displays 0-100 percent. This parameter indicates the current position of the accelerator pedal. The TCM receives accelerator pedal position data from the ECM on the CAN bus. The value indicated may not correspond to the TP angle value.
Band Apply Solenoid: Displays 0-100 percent. This parameter indicates the commanded duty cycle of the band apply solenoid. The band apply solenoid controls the apply and release rate of the brake band. A 0% duty cycle indicates that the TCM is commanding the band to apply or release with maximum speed and firmness. A 100% duty cycle indicates that the TCM is commanding the band to apply or release with minimum speed and firmness.
Battery Voltage: Displays 0-18 volts. This parameter indicates the battery voltage detected by the TCM.
Brake Switch: Displays Applied/Released. Indicates the state of the TCC brake switch. The TCM uses this input in order to control the TCC.
Commanded Gear: Displays 1/2/3/4. This parameter indicates the forward gear that is currently commanded by the TCM.
DTC #1: Displays the current diagnostic trouble code set by the TCM.
DTC #2: Displays the second diagnostic trouble code set by the TCM. More than two codes can be set at one time by the TCM. Refer to DTC history.
Default Mode: Displays Active/Inactive. Inactive indicates that the transmission is operating in normal modes. Active indicates that the transmission is operating in the default mode. In default mode, no power is applied to any of the controlled components. Refer to the Default Mode Operation in Electronic Component Description .
ECT: Displays -40 to 215°C (-40 to 419°F). This parameter indicates the engine coolant temperature. The TCM receives ECT data from the ECM on the CAN bus.
Engine Speed: Displays 0-8160 RPM. This parameter indicates the rotational speed of the crankshaft. The TCM receives engine speed data from the ECM on the CAN bus.
Engine Torque: Displays -100 to 410 N·m(-136 to 556 lb ft). This parameter indicates the calculated rotational force of the engine being applied to the transmission. The TCM receives engine torque data from the ECM on the CAN bus.
Engine Torque Reduction: Displays -500 to 10 N·m(-678 to 14 lb ft). This parameter indicates the amount of torque reduction being requested. The absolute value should decrease as the torque is reduced. The TCM requests engine torque reduction during shift events.
MIL Request: Displays Active/Inactive. This parameter indicates if the TCM is requesting MIL illumination. The TCM requests MIL illumination by sending a message to the ECM on the CAN bus.
Number of DTCs: Displays 1-20. This indicates the quantity of DTCs stored in the TCM.
PC Sol. Actual Current: Displays 0.010-1.063 amps. This parameter indicates the measured current of the pressure control solenoid circuit at the TCM. 0.10 amps indicates that maximum line pressure is being commanded. 1.1 amps indicates that minimum line pressure is being commanded.
PRNDL A/B/C/P: Displays High/Low. These parameters are the inputs from the automatic transmission manual shaft shift position switch. High represents a B+ voltage signal and low represents a 0 voltage signal. Inputs A, B, and C feed the decoder section of the TCM. Input P is the parity signal.
Power Relay Status: Displays On/Off. This parameter indicates the commanded state of the power control relay. The power control relay is a solid-state driver inside the TCM. The power control relay supplies power for the band apply, pressure control, TCC and shift solenoids. ON indicates that power is supplied to the controlled components.
Shift Pattern Mode: The scan tool displays the following manually-selectable modes:
Sport Mode Lamp: Displays On/Off. This parameter indicates the commanded state of
the sport mode indicator lamp. When a DTC sets in the TCM, the value will
toggle between ON and OFF.
Sport Mode Switch: Displays On/Off. This parameter indicates the current status of the sport mode switch. When the button is pressed and held, the value changes from OFF to ON.
TCC Slip Speed: Displays -4064 to 4064 RPM. This parameter indicates the calculated TCC slip speed based on engine speed, commanded gear, and transmission output speed. The TCM verifies the calculation by referencing the commanded state of the TCC solenoid.
TCC Solenoid : Displays On/Off. This parameter indicates the commanded state of the TCC solenoid. On indicates that the TCM is commanding the solenoid ON to apply the TCC. OFF indicates that the TCM is commanding the TCC to release.
TCM Torq. Red. Request: Displays Yes/No. This parameter indicates if the TCM is requesting the ECM to reduce engine torque during a shift event. Torque reduction requests are sent to the ECM on the CAN bus.
TFT Sensor: Displays 0-5 volts. This parameter indicates the measured voltage on the TFT sensor signal circuit to the TCM.
TP Angle: Displays 0-100 percent. This parameter indicates the amount of throttle opening. The indicated value may not correspond to the Accelerator Pedal Position value.
TR Switch --A/B/C/P: Displays On/Off. These parameters are the four inputs from the automatic transmission manual shaft shift position switch. On represents a B+ voltage signal. Off represents a 0 voltage signal. Inputs A, B, and C feed the decoder section of the TCM. Input P is the parity signal.
Trans. Fluid Temp.: Displays -40 to 215°C (-40 to 419°F). The TCM converts the electrical resistance of the TFT sensor into temperature expressed in degrees.
Transmission OSS : Displays 0-8160 RPM. This parameter indicates the rotational speed of the transmission output shaft in revolutions per minute (RPM).
Transmission Range : Displays Park, Reverse, Neutral, Drive, 3rd, 2nd, 1st. Indicates the transmission selector lever position.
Vehicle Speed : Displays 0-248 km/h (0-158 mph). This parameter indicates the rotational speed of the transmission output shaft converted to kilometers per hour (km/h) or miles per hour (mph).
WOT Switch: Displays On/Off. This is the current state of the accelerator pedal. ON indicates that the detected accelerator pedal position exceeds 89%. OFF indicates that the accelerator pedal position is less than 89%.
Winter Mode Lamp: Displays On/Off. This display indicates the commanded state of the winter mode lamp.
Winter Mode Switch: Displays On/Off. This parameter indicates the current status of the winter mode switch. When the button is pressed and held, the value changes from OFF to ON.
2-3 Solenoid: Displays ON/OFF. This parameter is the commanded status of the 2-3 shift solenoid. When the TCM commands first or second gear, the scan tool should display ON. When the TCM commands third or fourth gear, the scan tool should display OFF.
Accelerator Pedal Position: Displays 0-100 percent. This parameter indicates the current position of the accelerator pedal. The TCM receives accelerator pedal position data from the ECM on the CAN bus. The value indicated may not correspond to the TP angle value.
Band Apply Solenoid: Displays 0-100 percent. This parameter indicates the commanded duty cycle of the band apply solenoid. The band apply solenoid controls the apply and release rate of the brake band. A 0% duty cycle indicates that the TCM is commanding the band to apply or release with maximum speed and firmness. A 100% duty cycle indicates that the TCM is commanding the band to apply or release with minimum speed and firmness.
Battery Voltage: Displays 0-18 volts. This parameter indicates the battery voltage detected by the TCM.
Brake Switch: Displays Applied/Released. Indicates the state of the TCC brake switch. The TCM uses this input in order to control the TCC.
Commanded Gear: Displays 1/2/3/4. This parameter indicates the forward gear that is currently commanded by the TCM.
DTC #1: Displays the current diagnostic trouble code set by the TCM.
DTC #2: Displays the second diagnostic trouble code set by the TCM. More than two codes can be set at one time by the TCM. Refer to DTC history.
Default Mode: Displays Active/Inactive. Inactive indicates that the transmission is operating in normal modes. Active indicates that the transmission is operating in the default mode. In default mode, no power is applied to any of the controlled components. Refer to the Default Mode Operation in Electronic Component Description .
ECT: Displays -40 to 215°C (-40 to 419°F). This parameter indicates the engine coolant temperature. The TCM receives ECT data from the ECM on the CAN bus.
Engine Speed: Displays 0-8160 RPM. This parameter indicates the rotational speed of the crankshaft. The TCM receives engine speed data from the ECM on the CAN bus.
Engine Torque: Displays -100 to 410 N·m(-136 to 556 lb ft). This parameter indicates the calculated rotational force of the engine being applied to the transmission. The TCM receives engine torque data from the ECM on the CAN bus.
Engine Torque Reduction: Displays -500 to 10 N·m(-678 to 14 lb ft). This parameter indicates the amount of torque reduction being requested. The absolute value should decrease as the torque is reduced. The TCM requests engine torque reduction during shift events.
MIL Request: Displays Active/Inactive. This parameter indicates if the TCM is requesting MIL illumination. The TCM requests MIL illumination by sending a message to the ECM on the CAN bus.
Number of DTCs: Displays 1-20. This indicates the quantity of DTCs stored in the TCM.
PC Sol. Actual Current: Displays 0.010-1.063 amps. This parameter indicates the measured current of the pressure control solenoid circuit at the TCM. 0.10 amps indicates that maximum line pressure is being commanded. 1.1 amps indicates that minimum line pressure is being commanded.
PRNDL A/B/C/P: Displays High/Low. These parameters are the inputs from the automatic transmission manual shaft shift position switch. High represents a B+ voltage signal and low represents a 0 voltage signal. Inputs A, B, and C feed the decoder section of the TCM. Input P is the parity signal.
Power Relay Status: Displays On/Off. This parameter indicates the commanded state of the power control relay. The power control relay is a solid-state driver inside the TCM. The power control relay supplies power for the band apply, pressure control, TCC and shift solenoids. ON indicates that power is supplied to the controlled components.
Shift Pattern Mode: The scan tool displays the following manually-selectable modes:
| • | Economy - This mode enables line pressure profiles that produce smooth shifts. The shifts are scheduled in the high-efficiency RPM ranges for maximum fuel economy. |
| Within the Economy mode are several TCM-selected modes. Some modes enable certain functions, such as engine braking. Other programs reduce transmission busyness under certain conditions, such as ascending or descending hills. |
| • | Sport - This mode enables line pressure profiles that produce firm shifts. The shifts are scheduled in the high-output RPM ranges for maximum acceleration rates. |
| • | Winter - This mode may be activated under certain conditions. Refer to Winter Mode Operation . When Winter mode is activated, the TCM commands third gear to start the vehicle moving. The reduced torque in third gear decreases wheelspin in slippery conditions. |
Sport Mode Switch: Displays On/Off. This parameter indicates the current status of the sport mode switch. When the button is pressed and held, the value changes from OFF to ON.
TCC Slip Speed: Displays -4064 to 4064 RPM. This parameter indicates the calculated TCC slip speed based on engine speed, commanded gear, and transmission output speed. The TCM verifies the calculation by referencing the commanded state of the TCC solenoid.
TCC Solenoid : Displays On/Off. This parameter indicates the commanded state of the TCC solenoid. On indicates that the TCM is commanding the solenoid ON to apply the TCC. OFF indicates that the TCM is commanding the TCC to release.
TCM Torq. Red. Request: Displays Yes/No. This parameter indicates if the TCM is requesting the ECM to reduce engine torque during a shift event. Torque reduction requests are sent to the ECM on the CAN bus.
TFT Sensor: Displays 0-5 volts. This parameter indicates the measured voltage on the TFT sensor signal circuit to the TCM.
TP Angle: Displays 0-100 percent. This parameter indicates the amount of throttle opening. The indicated value may not correspond to the Accelerator Pedal Position value.
TR Switch --A/B/C/P: Displays On/Off. These parameters are the four inputs from the automatic transmission manual shaft shift position switch. On represents a B+ voltage signal. Off represents a 0 voltage signal. Inputs A, B, and C feed the decoder section of the TCM. Input P is the parity signal.
Trans. Fluid Temp.: Displays -40 to 215°C (-40 to 419°F). The TCM converts the electrical resistance of the TFT sensor into temperature expressed in degrees.
Transmission OSS : Displays 0-8160 RPM. This parameter indicates the rotational speed of the transmission output shaft in revolutions per minute (RPM).
Transmission Range : Displays Park, Reverse, Neutral, Drive, 3rd, 2nd, 1st. Indicates the transmission selector lever position.
Vehicle Speed : Displays 0-248 km/h (0-158 mph). This parameter indicates the rotational speed of the transmission output shaft converted to kilometers per hour (km/h) or miles per hour (mph).
WOT Switch: Displays On/Off. This is the current state of the accelerator pedal. ON indicates that the detected accelerator pedal position exceeds 89%. OFF indicates that the accelerator pedal position is less than 89%.
Winter Mode Lamp: Displays On/Off. This display indicates the commanded state of the winter mode lamp.
Winter Mode Switch: Displays On/Off. This parameter indicates the current status of the winter mode switch. When the button is pressed and held, the value changes from OFF to ON.
