Throttle Position Sensor Check
THROTTLE POSITION SENSOR CHECKRequired Special Tool:
- MB991709: Test Harness Set
Checking the Terminal Resistance
1. Disconnect the throttle position sensor connector.
2. Measure resistance between the throttle position sensor side connector terminal No. 2 and terminal No. 3.
Standard value: 2.0 - 4.0 kOhms
3. Measure resistance between the throttle position sensor side connector terminal No. 1 and terminal No. 2.
4. If resistance is outside the standard value, or if it doesn't change smoothly, replace the throttle position sensor.
NOTE: After replacement, the throttle position sensor should be adjusted.
Check using oscilloscope
1. Disconnect the throttle position sensor connector and connect the test harness special tool (MB991709) in between.(All terminals should be connected.)
2. Connect the oscilloscope probe to the throttle position sensor side connector terminal No. 1.
3. Turn the ignition switch "ON" position.
4. Slowly move the throttle lever from the idle position to the full-throttle position and check then if the waveform is free from any noise.
5. If any noise is recognized, replace the throttle position sensor.
NOTE: After replacement, the throttle position sensor should be adjusted.