3-52 FUEL SYSTEM (DFI)
Main Throttle Sensor (Service Code 11)
Main Throttle Sensor Output Voltage Inspection
Measure the output voltage at the ECU in the same way
as input voltage inspection.
Special Tool - Needle Adapter Set: 57001-1457
Main Throttle Sensor Output Voltage
Connections to ECU
(Without Oxygen Sensor Equipped Models [A])
Meter (+) → Y/W lead (terminal 6)
Meter (–) → BR/BK lead (terminal 22)
(Oxygen Sensor Equipped Models [B])
Meter (+) → Y/W lead (terminal 7)
Meter (–) → BR/BK lead (terminal 28)
Start the engine and warm it up thoroughly.
Check idle speed to ensure throttle opening is correct.
1 000 ±50 r/min (rpm)
If the idle speed is out of the specified range, adjust it
(see Idle Speed Inspection in the Periodic Maintenance
Turn the ignition switch OFF.
Measure the output voltage with the engine stopped, and
with the connector joined.
Turn the ignition switch ON.
Measure the output voltage when the throttle is fully
opened or completely closed.
Output Voltage at ECU
DC 1.05 ∼ 4.26 V (at idle throttle opening to
full throttle opening)
The main throttle sensor is operating correctly if the fol-
lowing voltages are obtained.
• DC 1.05 V (or slightly higher) with the throttle at the
• DC 4.26 V (or slightly lower) with the throttle at the fully
Do not remove or adjust the main throttle sensor
since it has been adjusted and set with precision at
Never drop the throttle body assy, can especially
on a hard surface. Such a shock to the sensor can