3-72 FUEL SYSTEM (DFI)
Vehicle-down Sensor (Service Code 31)
Vehicle-down Sensor Output Voltage Inspection
Remove the vehicle-down sensor (see Vehicle-down
Connect the harness adapter [A] to the vehicle-down sen-
sor connectors as shown in the figure.
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 Y/G) lead
Digital Meter (–) → BK (sensor BR/BK) lead
Hold the sensor vertically.
Measure the output voltage with the engine stopped, and
with the connector joined.
Turn the ignition switch ON.
Tilt the sensor 60
the sensor almost vertical with the arrow mark pointed up
[B], and measure the output voltage.
With sensor tilted 60
left: DC 0.65
With sensor arrow mark pointed up: DC
If you need to test again, turn the ignition OFF, and then
Turn the ignition switch OFF.
If the reading is out of the standard, replace the sensor.
70° or more [A] right or left, then hold
70° or more right or