Check TPS Resistance
- Ignition switch is turned "OFF". Disconnect ETC Motor & TPS connector.
- Measure resistance between TPS power and TPS ground terminals of ETC Motor & TPS connector. (component side)
Specification: Refer to the specification (Signal Waveform shown above)
- Is the measured signal waveform shown above O.K?
YES
- Substitute with a known-good ECM and check for proper operation. If the problem is corrected, replace ECM and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO
- Substitute with a known-good TPS and check for proper operation. If the problem is corrected, replace TPS and then go to "VERIFICATION OF VEHICLE REPAIR " procedure. (After replacing ETC, do initialization of ETC as follows)
* Procedure of ETS Initialization
- Erase the trouble codes in ECM.
- Turn the ignition key "OFF" until the main relay turns "OFF". (It will take about 10 sec.)
- Turn ignition key "ON" for more than 1 second to record the throttle motor position in the EEPROM.