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FUEL PUMP SYSTEM
ELEC
5. Fuel pump relay
S Disconnect the relay unit from the coupler.
S Connect the pocket tester (Ω 1) and battery
(12 V) to the relay unit ferminals as shown.
Battery positive terminal ! red/black
Battery negative terminal ! blue/red
Tester positive probe ! red/black
Tester negative probe ! blue/black
1
1
2
3
S Does the fuel pump relay have continuity be-
tween red/black and blue/black?
YES NO
Replace the relay unit
6. Fuel pump resistance
S Disconnect the fuel pump coupler from the
wire harness.
S Connect the pocket tester (Ω 1) to the fuel
pump coupler (fuel pump side) as shown.
1
2
EB808400
Tester positive probe ! black/blue
Tester negative probe ! black
YES NO
Relpace the fuel pump.
S Measure the fuel pump resistance.
Fuel pump resistance
4 X 10 Ω at 20_C
S Is the fuel pump OK?
7. Wiring
S Check the entire fuel pump system’s wiring.
Refer to “CIRCUIT DIAGRAM”.
S Is the fuel pump system’s wiring properly con-
nected and without defects?
EB808401
YES NO
Prperly connect or re-
pair the fuel pump
system’s wiring.
Replace the ignitor
unit.