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FUEL SYSTEM (DFI) 3-45
Vehicle-down Sensor (Service Code/Character-31/dOS)
Vehicle-down Sensor Inspection
NOTE
○
Be sure the battery is fully charged.
•
Remove:
Fuel Tank (see Fuel Tank Removal)
•
Connect a digital volt meter [A] to the connector [B] of the
vehicle-down sensor lead with the needle adapter set [C].
Special Tool - Needle Adapter Set: 57001-1457
Vehicle-down Sensor Power Source Voltage
Connections to Sensor
Meter (+) → R/G lead [D]
Meter (–) → BK/W lead [E]
•
Turn the ignition switch ON and push the lanyard k ey un-
der the stop button.
•
Pushing the start button, run the engine 5 ∼ 6 seconds at
idling to measure the sensor power sours voltage.
○
Wait 15 seconds before using the starter again.
Power Source Voltage at Sensor
Standard:
4.75 ∼ 5.25 V
•
Turn the ignition switch OFF.
If there is no standard voltage, check the following:
Battery (see Electrical System chapter)
MainFuse20A
Wiring for Vehicle-down Sensor Power Source (see next
diagram)
If the power source is normal, check the output voltage.
•
Turn the ignition switch OFF.
•
Remove the vehicle-down sensor. Do not disconnect the
connector.
•
Connect a digital volt meter [A] to the connector, with nee-
dle adapter set [B].
Special Tool - Needle Adapter Set: 57001-1457
Vehicle-down Sensor Output Voltage
Connections to Sensor
Meter (+) → BL /W lead [D]
Meter (–) → BK/W lead [E]
•
Hold the sensor vertically.
•
Turn the ignition switch ON and push the lanyard k ey un-
der the stop button.
•
Pushing the start button, run the engine 5 ∼ 6 seconds at
idling to measure the sensor output voltage.
○
Tilt the sensor 1 10 ∼ 130° or more [C] right or left, then
hold the sensor and measure the output voltage.
○
Wait 15 seconds before using the starter again.
Output Voltage at Sensor
Standard: with sensor tilted 110 ∼ 130° or more right
or left: 0.65 ∼ 1.35 V
with sensor arrow mark pointed up: 3.55
∼ 4.45 V