Throttle Position Sensor: Testing and Inspection

INSPECTION









SCHEMATIC DIAGRAM





SPECIFICATION
[THROTTLE POSITION SENSOR]














[ETC MOTOR]






CIRCUIT DIAGRAM




FAIL-SAFE MODE






COMPONENT INSPECTION
1. Connect a scan tool to the Diagnosis Link Connector (DLC).
2. Start engine and check output voltages of TPS 1 and 2 at C.T and W.O.T.





3. Turn ignition switch OFF and disconnect the scantool from the DLC.
4. Disconnect ETC module connector and measure resistance between ETC module terminals 4 and 1 (TPS 1).
5. Measure resistance between ETC module terminals 7 and 6 (TPS 2).





Specification: Refer to SPECIFICATION.


ETC MOTOR
1. Disconnect ETC module connector and measure resistance between ETC module terminals 5 and 8.





Specification: Refer to SPECIFICATION.


ETC SYSTEM INITIALIZATION
1. Erase DTC(s) memorized in PCM with a scan tool.
2. Turn ignition switch off and wait for about 10 seconds.
3. Turn ignition switch on for more then 1 second. (At this time, the PCM records initial position of ETC motor on its EEPROM).