Scan Tool Data Definitions Part 3
SCAN TOOL DATA DEFINITIONS 3Short Term FT Avg. Bn1: This parameter displays the short term correction to fuel delivery for bank 1 by the control module in response to the amount of time the oxygen sensor voltage spends above or below the 450 mV threshold. The scan tool will display 0 % if no adjustments are required. the scan tool will display a higher positive value if fuel has to be added, and a higher negative value if fuel has to be removed.
Short Term FT Avg. Bn2: This parameter displays the short term correction to fuel delivery for bank 2 by the control module in response to the amount of time the oxygen sensor voltage spends above or below the 450 mV threshold. The scan tool will display 0 % if no adjustments are required. the scan tool will display a higher positive value if fuel has to be added, and a higher negative value if fuel has to be removed.
Short Term FT Bank 1: This parameter displays the short term correction to fuel delivery for bank 1 by the control module in response to the amount of time the oxygen sensor voltage spends above or below the 450 mV threshold. The scan tool will display 0 % if no adjustments are required. the scan tool will display a higher positive value if fuel has to be added, and a higher negative value if fuel has to be removed.
Short Term FT Bank 2: This parameter displays the short term correction to fuel delivery for bank 2 by the control module in response to the amount of time the oxygen sensor voltage spends above or below the 450 mV threshold. The scan tool will display 0 % if no adjustments are required. the scan tool will display a higher positive value if fuel has to be added, and a higher negative value if fuel has to be removed.
Skip Shift Lamp Command: This parameter displays the commanded state of the skip shift lamp control circuit. The skip shift lamp should be on when the scan tool indicates the Skip Shift Lamp Command is On. The skip shift lamp should be off when the scan tool indicates the Skip Shift Lamp Command is Off.
Skip Shift Solenoid Command: This parameter displays the commanded state of the skip shift solenoid control circuit. The skip shift solenoid should be on when the scan tool indicates the Skip Shift solenoid Command is On. The skip shift solenoid should be off when the scan tool indicates the Skip Shift solenoid Command is Off.
Spark: This parameter displays the spark timing being commanded by the control module on the IC circuit. The scan tool will display a negative value if the spark timing is before top dead center (BTDC) or spark advance; the scan tool will display a positive value if the spark timing is after top dead center (ATDC) or spark retard. Because the ignition control module sets spark advance at a fixed value BTDC while operating in bypass mode, the displayed spark advance only reflects true spark timing when the PCM has commanded IC mode.
Start Up ECT: This parameter Indicates the engine coolant temperature at engine start up as calculated by the control module based on the signal from the ECT sensor. the scan tool will display a higher value on a warmer engine, and a lower value on a colder engine.
Stoplamp Pedal Switch: This parameter displays the state of the brake pedal as determined by the stoplamp pedal switch. This switch turns on the stoplamps when the brake pedal is depressed. The scan tool will display Applied when the brake pedal is depressed, and Released when the brake pedal is not depressed.
TAC/PCM Communication Signal: This parameter indicates the status of the control module communication with the throttle actuator control (TAC) module. The scan tool will display OK if there are no circuit problems between the TAC module and the control module. The scan tool will display Fault if a circuit fault is detected on the TAC to control module communication circuits.
TFP Switch: This parameter indicates the transmission gear select position as calculated by the control module based on two A/B inputs from the automatic transmission fluid pressure manual valve position switch. The scan tool displays Park/Neutral, Reverse, Drive, or Invalid, depending on gear position.
Torque Delivered Signal: This parameter indicates the torque delivered from the engine to the transmission as calculated by the control module. The scan tool will display a higher value for higher torque, and a lower value for lower torque.
Torque Request Signal: This parameter indicates the torque requested from the engine to the transmission as calculated by the control module. The scan tool will display a higher value for higher torque, and a lower value for lower torque.
TP Desired Angle: This parameter indicates the desired throttle angle calculated by the throttle actuator control (TAC) module as commanded by the vehicle operator. the scan tool will display a higher value when the accelerator pedal is depressed, and a lower value as the accelerator pedal is released.
TP Indicated Angle: This parameter displays the angle of the throttle plate as calculated by the control module using the signals from the throttle position sensor(s). The TP indicated angle is a range of values indicating a low percentage when the throttle is closed to a high percentage when the throttle is wide open.
TP Sensor 1: This parameter displays the voltage signal sent to the control module from throttle position (TP) sensor 1 of the throttle assembly. TP sensor 1 is a range of values indicating a low voltage when the throttle is closed to a high voltage when the throttle plate is fully open.
TP Sensor 1: This parameter displays the angle of the throttle position (TP) sensor 1 as calculated by the control module using the signal from the TP sensor 1. TP sensor 1 is a range of values indicating a low percentage when the throttle is closed to a high percentage when the throttle is fully open.
TP Sensor 2: This parameter displays the voltage signal sent to the control module from throttle position (TP) sensor 2 of the throttle assembly. TP sensor 2 is a range of values indicating a high voltage when the throttle is closed to a low voltage when the throttle plate is fully open.
TP Sensor 2: This parameter displays the angle of the throttle position (TP) sensor 2 as calculated by the control module using the signal from the TP sensor 2. TP sensor 2 is a range of values indicating a low percentage when the throttle is closed to a high percentage when the throttle is fully open.
TP Sensors 1 and 2: This parameter displays the results of a control module test that compares the signals from the throttle position (TP) sensors 1 and 2. The scan tool will display Agree or Disagree. Agree indicates that TP sensor 1 and TP sensor 2 voltages correspond to the same throttle position. Disagree indicates that TP sensor 1 and TP sensor 2 voltages correspond to different throttle positions.
TR Switch: This parameter indicates the transmission/transaxle gear select lever position as calculated by the control module based on a signal from the TR switch. The scan tool status will switch from High to Low as different combinations are met. On the scan tool in Park, the PRNDL would read P and A will be Low, and B and C will be High.
Traction Control Signal: This parameter indicates the status of the traction control system signal from the EBCM, as reported by the control module. The scan tool will display ACTIVE if the traction control system is taking action to reduce drive wheel slippage. The scan tool will display INACTIVE if the traction control system is not being required to take action to reduce drive wheel slippage.
Traction Control Status: This parameter indicates the status of the traction control system as reported by the control module. The scan tool will display ACTIVE if the traction control system is taking action to reduce drive wheel slippage. The scan tool will display INACTIVE if the traction control system is not being required to take action to reduce drive wheel slippage.
Vehicle Speed Sensor: This parameter indicates the vehicle speed as calculated by the control module based on a signal from the vehicle speed sensor (VSS). the scan tool will display a higher value at higher vehicle speeds, and a lower value at lower vehicle speeds.
VTD Auto Learn Timer: This parameter indicates the status of the theft deterrent system password learn. The scan tool will display ACTIVE if the system is ready to learn a new password. The scan tool will display INACTIVE if the theft deterrent system is not ready to learn a new password.
VTD Fuel Disable: This parameter Indicates if the theft deterrent system is disabling fuel delivery. The scan tool will display ACTIVE if the fuel delivery is being disabled by the theft deterrent system. The scan tool will display INACTIVE if the theft deterrent system is not disabling fuel delivery.
VTD Fuel Disable Until Ign. Off: This parameter Indicates if the theft deterrent system is disabling fuel delivery until the next ignition cycle. The scan tool will display YES if the fuel delivery is being disabled by the theft deterrent system. The scan tool will display NO if the theft deterrent system is not disabling fuel delivery.
Warm-ups w/o Emission Faults: This parameter indicates the number of warm up cycles that have occurred without an emission fault present. The scan tool will display a 0 if a fault has occurred. the scan tool will display a higher count if a number of warm up cycles have occurred without an emission fault.
Warm-ups w/o Non-Emission Faults: This parameter indicates the number of warm up cycles that have occurred without a non-emission fault present. The scan tool will display a 0 if a fault has occurred. the scan tool will display a higher count if a number of warm up cycles have occurred without a non-emission fault.