Throttle Position Sensor Inspection
- Ignition "OFF".
- Connect VMI to GDS and set up an oscilloscope as follow (2-channel);
Channel A (+): Pin No. 4 (TPS1 signal) terminal of Throttle Body.
Channel A (-): Ground
Channel B (+): Pin No. 5 (TPS2 signal) terminal of Throttle Body.
Channel B (-): Ground
- Ignition "ON" & Engine "ON".
- Testing Condition: Idle to Acceleration (W.O.T).
Specification: Refer to Figure below
* Sum of TPS1 and TPS2 signal voltage should equal to approximately 5V.
- Is the measured value within specification?
YES
- Go to "SYSTEM INSPECTION " procedure.
NO
- Carefully re-do this troubleshooting guide steps.
- If no problems were found with the circuits or connectors, replace Throttle Body and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
CAUTION:
- Install the component with the specified torques.
- Note that internal damage may occur when the component is dropped or mis-treated.
NOTE:
It is necessary to perform the TPS adaptation procedure after the ETC assembly or PCM replacing.
■ TPS adaptation procedure
Ignition "OFF" and then "ON" without cranking. Wait for 10 seconds under enable conditions.
→ Enable conditions: Battery >10V & Intake Air Temp. >5.3°C (41.5°F) & 5.3°C (41.5°F) <Engine Coolant Temp. < 99.8°C (211.6°F)
■ TPS adaptation procedure
Ignition "OFF" and then "ON" without cranking. Wait for 10 seconds under enable conditions.
→ Enable conditions: Battery >10V & Intake Air Temp. >5.3°C (41.5°F) & 5.3°C (41.5°F) <Engine Coolant Temp. < 99.8°C (211.6°F)