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FUEL SYSTEM (DFI) 3-63
Subthrottle Sensor (Service Code 32)
Output Voltage Inspection
•
Remove the throttle body assy (see Throttle Body Assy
Removal).
•
Measure the output voltage at the subthrottle sensor in
the same way as input voltage inspection. Note the fol-
lowing.
•
Disconnect the subthrottle sensor (black) [A] and (black)
connect the harness adapter [B] between these connec-
tors.
Special Tool - Throttle Sensor Harness Adapter :
57001–1538
•
Measure the output voltage of the sensor with the engine
stopped, and with the connector joined.
•
Turn the ignition switch ON.
•
Measure the output voltage when the subthrottle valve is
fully opened or completely closed by hand.
Main Throttle Sensor Output Voltage
Connections to Adapter
Meter (+) → W (sensor BR) lead
Meter (–) → BK (sensor BR/BK) lead
Standard :
0.48 ∼ 0.52 V DC (at idle throttle opening)
3.6 ∼ 3.8 V DC (at full throttle opening)
If the output voltage is out of the standard, inspect the
subthrottle sensor resistance.
If the output voltage is normal, check the wiring for conti-
nuity.
Wiring Connection
ECU Conne ctor [A] ←→
Subthrottle S ensor Connector [B]
BR lead (ECU terminal 3)
BR/BK lead (ECU terminal 14)
If the wiring is good, check the ECU for its ground and
power supply (see ECU section).