What is Sensors/Switches?
The sensors/switches play the role of collecting the types of data used to determine the various controls, and convert them into electrical signals, which are then transmitted to the Engine & ECT ECU. The types of sensors/switches are as follows.
1. Throttle position sensor / Accelerator pedal position sensor
This detects the opening angle of thethrottle valve.
2. Kick down switch
This detects if the accelerator pedalis being depressed to full throttle.
3. Crankshaft position sensor
This detects the engine speed.
4. Transaxle speed sensor
Input turbine speed sensor
This detects the automatic transaxle
input shaft speed.
Counter gear speed sensor
This detects the automatic transaxle
output shaft speed.
5. Water temperature sensor
This detects the coolant temperature.
6. Vehicle speed sensor
This detects the vehicle speed.
7. Transaxle fluid temperature sensor
This detects the ATF (Automatic Transaxle Fluid) temperature in the automatic transaxle.
8. Overdrive main switch
The overdrive main switch is the O/D cancel switch. When the switch is turned OFF, the O/D gear does not shift up even when the shift up speed is reached. If the switch is turned OFF while driving in the O/D gear, the transaxle shifts down to the 3rd gear. In addition, the O/D OFF indicator light is turned on while the overdrive main switch is OFF.
HINT:
The overdrive main switch is sometimes also called the overdrive OFF switch or transaxle (transmission) control switch. With the gate type shift lever, the O/D can be canceled by operating the lever. There is no O/D OFF indicator light because a positioning light can be used to show the shift lever position.
9. Neutral start switch
The neutral start switch transmits the shift lever position to the Engine & ECT ECU. The ECU receives information on the range into which the transaxle has been shifted from the shift position sensor located in the neutral start switch, then determines the appropriate shift pattern.
HINT:
The contacts of this switch are also used to turn on one of the shift lever position indicator light to inform the driver of the current position of the shift lever. In addition, the ECU controls so that the starter can be operated only while the shift lever is in the “P” or “N” ranges, and so that when the shift lever is in the “R” range, a reverse warning buzzer sounds and the backup light turns on. Signals sent to the ECU from the neutral start switch vary by models.
10.Stop light switch
When the brake pedal is being depressed, the Engine & ECT ECU cancels the lock-up. This prevents the engine from being stalled by the lock-up
11.Driving pattern select switch
The driving pattern select switch allows the driver to select the mode of choice. The mode switches that are installed depend on the model and the region.
Power mode: This sets the gear shift timing to the high engine speed range.
Snow mode: This sets the 2nd gear as the start-off gear.
Economy mode: This advances the gear shift timing to lower the fuel consumption while driving.
Manual mode: This makes gear hold possible using the shift lever position.
