Component Inspection
■ Check TPS
1.

IG "ON"

2.

Monitor signal waveform of TPS by stepping on and off the accellerator padel on scantool.

Specification :

Throttle Opening (˚)

Output Voltage (V) [Vref=5.0]

TPS1

TPS2

0˚

0.0V

5.0V

10˚

0.5V

4.5V

20˚

0.9V

4.1V

30˚

1.4V

3.6V

40˚

1.8V

3.2V

50˚

2.3V

2.7V

60˚

2.7V

2.3V

70˚

3.2V

1.8V

80˚

3.6V

1.4V

90˚

4.1V

0.9V

100˚

4.5V

0.5V

110˚

5.0V

0.0V

Fig.1) Normal waveform of TPS1 & TPS2 with no accel padal depressed under IG ON condition

Fig.2) Normal waveform of TPS1 & TPS2 with accel padal depressed under IG ON condition

3.

Is the measured resistance within specification ?

▶ 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.

note

There is a memory reset function on scantool that can erase optional parts automatically detected and memorized by ECM. Before or after testing ECM on the vehicle, use this function to reuse the ECM on the others

▶ Substitute with a known - good ECT motor & TPS and check for proper operation. If the problem is corrected, replace ECT motor & TPS and go to "Verification of Vehicle Repair" procedure.

※ Procedure of ETS Initialization

1)

Erase the trouble codes on ECM

2)

Turn the ignition key off and keep this condition until the main relay is turned off.(It will take 10sec.)

3)

Turn ignition key on more than 1second to record the throttle motor position on the EEPROM

Яндекс.Метрика