Component Tests and General Diagnostics
Fuel Pump Continuity1. Disconnect the fuel pump connector.
2. Inspect continuity between fuel pump connector terminals A and D.
- If there is no continuity, carry out the "Fuel Pump Maximum Pressure Inspection".
Fuel Pump Maximum Pressure Inspection
WARNING: Fuel line spills and leaks are dangerous. Fuel can ignite and cause serious injuries or death and damage. Always carry out the following procedure with the engine stopped.
1. Complete the "BEFORE REPAIR PROCEDURE".
2. Disconnect the negative battery cable.
3. Remove the cruise actuator with the harness and cable connected. [FS.]
4. Connect a fuel pressure gauge to the fuel filter [FS] or the main fuel pipe [KL] and plug the outlet of the gauge as shown. (Install clamps as shown.)
5. Remove the fuel pump relay.
CAUTION: Connecting the wrong fuel pump relay socket terminals may possibly cause a malfunction. Carefully connect the specified terminal only.
6. Short the fuel pump relay socket terminal 30 to the body GND using a jumper wire.
CAUTION: Before connecting the negative battery cable be sure all fuel connections, clamps and fittings are secure. Fuel pump will operate at full pressure anytime the cable Is connected to the battery. When the cable makes contact, it is sure to arc and create a danger of Ignition or explosion.
7. Connect the negative battery cable to operate the fuel pump. Measure the fuel pump maximum pressure.
Fuel pump maximum pressure 480 - 63O kPa {4.8 - 6.5 kgf/sq.cm, 69 - 92 psi}
8. Disconnect the negative battery cable and remove the jumper wire.
- If not as specified, carry out the "Fuel Line Hold Pressure Inspection".
9. Complete the "AFTER REPAIR PROCEDURE".