3-86 FUEL SYSTEM (DFI)
Fuel Pump
•Remove the front storage pocket (see Hull/Engine Hood chapter).
•Connect the hand tester (25 V DC) [A] to the fuel pump lead connector [B], using the needle adapter set [C].
Special Tools - Hand Tester:
•Turn the ignition switch ON and push the lanyard key un- der the stop button.
•Pushing the start button, run the engine 5 ∼ 6 seconds at idling to measure the power source voltage.
○Wait 15 seconds before using the starter again.
Pump Power Source Voltage
Connections
Tester (+) → W/R lead [D]
Tester
Power Source Voltage at Pump Lead Connector Standard: Battery Voltage
If the reading is good, the power source voltage is normal. Inspect the operating voltage.
If there is no battery voltage, check the following: Main Fuse 20 A
Wiring for Fuel Pump Power Source (see Fuel Pump Circuit in this chapter)
Operating Voltage Inspection
NOTE
○Be sure the battery is fully charged.
•Remove the front storage pocket (see Hull/Engine Hood chapter).
•Connect the hand tester [A] to the connector [B], using the needle adapter set [C].
Special Tools - Hand Tester:
•Turn the ignition switch ON and push the lanyard key un- der the stop button.
•Pushing the start button, run the engine 5 ∼ 6 seconds at idling to measure the operating voltage.
○Wait 15 seconds before using the starter again.
Pump Operating Voltage
Connections
Tester (+) → W/R lead
Tester
Operating Voltage
Standard: Battery Voltage
If the reading stays on battery voltage but the pump doesn’t work, replace the pump.
If there is no battery voltage at all, check the ECU for its ground and power supply (see ECU Power Supply In- spection).
If the ground and power supply are good, check the fuel pump wiring.
