3-34 FUEL SYSTEM (DFI)
Throttle Sensor (Service Code 11)
Measure the input voltage with the engine stopped and
with the connector joined.
DC 4.75 ∼ 5.25 V
Disconnect the power supply harness.
If the reading is within the standard, check the output volt-
age (see Throttle Sensor Output Voltage Inspection).
If the reading is out of the standard, remove the ECU and
check the wiring for continuity between the main harness
Disconnect the ECU and sensor connectors.
Wiring Continuity Inspection
ECU Connector [A] ←→
Throttle Sensor Connector [B]
R/Y lead [C] (ECU terminal 12)
GY lead [E] (ECU terminal 17)
If the wiring is good, check the ECU for its ground and
power supply (see ECU Power Supply Inspection).
If the ground and power supply are good, replace the ECU
(see ECU Removal/Installation).
Throttle Sensor Output Voltage Inspection
Measure the throttle sensor output voltage in the same
way as input voltage inspection. Note the following.
Disconnect the throttle sensor connector and connect the
measuring adapter [A] between these connectors.
Main Harness [B]
Throttle Sensor [C]
Digital Meter [D]
Special Tool - Measuring Adapter: 57001-1700
Throttle Sensor Output Voltage
Connections to Adapter:
Digital Meter (+) → W (sensor Y) lead
Digital Meter (–) → BK (sensor BK) lead
Start the engine and warm it up thoroughly.
Check the idle speed to ensure the throttle opening is
2 000 ±50 r/min (rpm)
If the idle speed is out of the specified range, adjust it
(see Idle Speed Adjustment in the Periodic Maintenance
R/Y lead [D]
GY lead [F]