Impreza Coupe FWD F4-1820cc 1.8L SOHC (1995)
Throttle Position Sensor/Switch: Testing and Inspection
MEASURE VOLTAGE SIGNAL FROM TCM
Measure TCM Input Signal Voltage
1.
Ignition switch ON (engine not running).
2.
Measure signal voltage input from throttle position sensor with accelerator pedal fully depressed.
Connector & Terminal
Voltage
(B53) 20 - (B52) 14
0.3 - 0.7 Volts (throttle fully closed)
3.9 - 4.3 Volts (throttle fully open)
Select Monitor Function Mode F09
Condition: Ignition switch ON (engine OFF)
Specified data: THV F09
0.3 - 0.7 Volts (throttle fully closed)
3.9 - 4.3 Volts (throttle fully open)
(Must be changed corresponding with accelerator pedal operation [from "released" to "depressed" position.])
CHECK HARNESSES AND CONNECTORS BETWEEN TCM AND TPS AND BETWEEN TCM AND ECM
Check Harness And Connectors Between TPS, TCM And ECM
1.
Unplug TCM connector.
2.
Unplug connector from ECM.
3.
Unplug connector from throttle position sensor.
4.
Measure resistance between TCM connector and throttle position sensor connector.
Connector & Terminal
Resistance
(B53) 20 - (E10) 2
0 Ohms
(B53) 20 - body
1 M Ohms, minimum
(B53) 1 - (E10) 3
0 Ohms
(B53) 1 - body
1 M Ohms, minimum