dh4: Check Voltage VREF to Signal Return
| Steps | _Key Off, wait 10 seconds
_Disconnect TP vehicle harness connector at throttle body. Inspect for damaged pins, corrosion, loose wires, etc. Service as necessary. _DVOM on 20 volt scale _Key On, engine Off _Measure voltage between VREF and Signal Return at the TP vehicle harness |
| Result | Is voltage between 4.0 and 6.0 volts? |
| Direction | YES
Replace TP sensor. Refer to Section 3 for adjustment procedures for EFI applications. Rerun Quick Test NO GO to Pinpoint Test Step Continue |
| Component | Throttle Position Sensor |
| Description | The TPS provides the EEC with a signal proportional to opening angle of the throttle body throttle plates, which informs the EEC the movement and position of the throttle plate. |
| Location | Mounted on the throttle body |
| Wire Colors | Dark Green with Light Green stripe
Orange with White stripe Black with White stripe |
| Image |  |