Vehicle-down Sensor (Service Code 31)
If the reading is within the standard, remove the ECU and
check the wiring for continuity between main harness side
Disconnect the ECU and sensor connectors.
ECU Connector [A] ←→
Vehicle-down Sensor Connector [B]
Y/G lead (ECU terminal 2) [C] (KX450E9F)
BR lead (ECU terminal 2) [C]
GY lead (ECU terminal 24) [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).
Vehicle-down Sensor Circuit
2. Vehicle-down Sensor
*: Y/G in case of KX450E9F
FUEL SYSTEM (DFI) 3-59