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de21: Check for VREF at Throttle Position Sensor
Steps _Refer to schematic in Pinpoint Test DH
_Key Off, wait 10 seconds
_DVOM on 20 volt scale
_Disconnect Throttle Position Sensor
_Key On, Engine Off
_Measure voltage between VREF and Signal Return at the Throttle Position sensor vehicle harness connector
Result Is voltage between 4.0 and 6.0 volts?
Direction YES

Reconnect Throttle Position Sensor. GO to Continue


GO to Pinpoint Test Step Continue

TPS Information:
ComponentThrottle Position Sensor
DescriptionThe 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.
LocationMounted on the throttle body
Wire ColorsDark Green with Light Green stripe
Orange with White stripe
Black with White stripe