Subthrottle Sensor (Service Code 32)
If the reading is out of the standard, remove the ECU
and check the wiring for continuity between main harness
Disconnect the ECU and sensor connectors.
ECU Connector [A] ←→
Subthrottle Sensor Connector [B]
BL lead (ECU terminal 10) [C]
BR/BK lead (ECU terminal 28) [D]
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).
Subthrottle Sensor Output Voltage Inspection
Measure the output voltage at the subthrottle sensor in
the same way as input voltage inspection, note the fol-
Disconnect the subthrottle sensor connector and connect
the harness adapter [A] between these connectors.
Special Tool - Throttle Sensor Setting Adapter:
Subthrottle Sensor Output Voltage
Connections to Adapter:
Digital Meter (+) → R (sensor BR) lead
Digital Meter (–) → W (sensor BR/BK) lead
Remove the fuel tank (see Fuel Tank Removal).
Disconnect the subthrottle valve actuator harness con-
FUEL SYSTEM (DFI) 3-77