3-54 FUEL SYSTEM (DFI)
Vehicle-down Sensor (Service Code 31)
Vehicle-down Sensor Output Voltage Inspection
Remove the vehicle-down sensor, and connect the mea-
suring adapter [A].
Special Tool - Measuring Adapter: 57001-1700
Main Harness [B]
Vehicle-down Sensor [C]
Connect a digital meter [D] to the harness adapter leads.
Vehicle-down Sensor Output Voltage
Connections to Adapter:
Digital Meter (+) → W (sensor BR) lead
Digital Meter (–) → BK (sensor GY) lead
Hold the vehicle-down sensor vertically.
Refer to the Self-diagnosis Procedures, connect the 12 V
battery to the main harness.
Measure the output voltage with the engine stopped, and
with the connector joined.
Tilt the sensor 60 ∼ 70° or more [A] right or left, then hold
the sensor almost vertical with the arrow mark pointed up
With sensor tilted 60 ∼ 70° or more right or
left: DC 0.65 ∼ 1.35 V
With sensor arrow mark pointed up: DC
3.55 ∼ 4.45 V
If the reading is out of the standard, replace the sensor.