Main Throttle Sensor (Service Code 11)
If the reading is out of the standard, remove the ECU and
check the wiring for continuity between harness connec-
Special Tool - Hand Tester: 57001-1394
Disconnect the ECU and sensor connectors.
Wiring Continuity Inspection
ECU Connector [A] ←→
Main Throttle Sensor Connector [B]
BL lead (ECU terminal 9) [C]
BR/BK lead (ECU terminal 13) [D]
If the wiring is good, check the ECU for its ground and
power supply (see ECU Power Supply Inspection in the
Fuel System (DFI) chapter).
If the ground and power supply are good, replace the ECU
(see ECU Removal/Installation in the Fuel System (DFI)
Main Throttle Sensor Resistance Inspection
Turn the ignition switch to OFF.
Measure the main throttle sensor resistance in the same
way as input voltage inspection, note the following.
Disconnect the throttle sensor setting adapter [A] from the
connector of the main harness side.
Special Tool - Throttle Sensor Setting Adapter:
Connect the setting adapter [B] to the sensor connector
Connect a digital meter [A] to the setting adapter [B].
Main Throttle Sensor [C]
Main Throttle Sensor Resistance
Connections to Adapter:
W (sensor BL) lead
Standard: 4 ∼ 6 kΩ
If the reading is out of the standard, replace the throttle
If the reading is within the standard, check the output volt-
age (see Main Throttle Sensor Output Voltage Inspec-
← → BK (sensor BR/BK) lead
SELF-DIAGNOSIS SYSTEM 17-17