Toyota Land Cruiser

 Service Manual

SFI » Fuel pump
On-vehicle inspection

1. CHECK FUEL PUMP OPERATION

(a) Connect a TOYOTA hand-held tester or OBD II scan tool to the DLC3.

(b) Turn the ignition switch ON, and press the TOYOTA hand-held tester or OBD II scan tool main switch ON.

NOTICE: Do not start the engine.

(c) Select the ACTIVE TEST mode on the TOYOTA handheld tester or OBD II scan tool.

(d) Please refer to the TOYOTA hand-held tester or OBD II scan tool operator's manual for further details.

(e) If you have no TOYOTA hand-held tester or OBD II scan tool, connect the positive (+) and negative (-) leads from the battery to the fuel pump connector. (See step 3) (f) Disconnect the fuel return hose from the clamp on the Vbank cover.

(g) Remove the 2 bolts, nuts and V-bank cover.

(h) Check that the pulsation damper screw pop up when the fuel pump operates.

If operation is not as specified, check following parts:

• Fusible link
• Fuses
• EFI main relay
• Fuel pump
• ECM
• Wiring connections

(i) Turn the ignition switch OFF.

(j) Disconnect the TOYOTA hand-held tester or OBD II scan tool from the DLC3.

2. CHECK FUEL PRESSURE

(a) Check the battery positive voltage is above 12 V.

(b) Disconnect the negative (-) terminal cable from the battery.

(c) Remove the front fuel pipe from the LH delivery pipe (SF-22 ).

(d) Install the front fuel pipe and SST (pressure gauge) to the delivery pipe with the 3 lower gaskets and SST (adaptor).

SST 09268-45014 (09268-41190, 90405-06167)

Torque: 39 N·m (400 kgf·cm, 29 ft·lbf)

(e) Wipe off any splattered gasoline.

(f) Reconnect the negative (-) terminal cable to the battery.

(g) Connect a TOYOTA hand-held tester or OBD II scan tool to the DLC3 (See (a) to (e) in step 1 on the check fuel pump operation).

(h) Measure the fuel pressure.

Fuel pressure: 265 - 304 kPa (2.7 - 3.1 kgf/cm2, 38 - 44 psi)

If pressure is higher than the specification, replace the fuel pressure regulator.

If pressure is lower than the specification, check these parts:

• Fuel hoses and connections
• Fuel pump
• Fuel filter
• Fuel pressure regulator

(i) Disconnect the TOYOTA hand- held tester from the DLC3.

(j) Start the engine.

(k) Measure the fuel pressure at idle.

Fuel pressure: 265 - 304 kPa (2.7 - 3.1 kgf/cm2, 38 - 44 psi)

(l) Stop the engine.

(m) Check that the fuel pressure remains in the specification below for 5 minutes after the engine stop.

Fuel pressure: 147 kPa (1.5 kgf/cm2, 21 psi) or more

If the pressure is not as specified, check the fuel pump, pressure regulator and/or the injectors.

(n) After checking the fuel pressure, disconnect the negative (-) terminal cable from the battery and carefully remove the SST to prevent gasoline from splashing.

SST 09268-45014

(o) Reinstall the front fuel pipe to the LH delivery pipe (SF-27 ).

(p) Reconnect the negative (-) terminal cable to the battery.

(q) Check for fuel leaks (SF-1 ).

(r) Reinstall the V-bank cover with the 2 bolts and nuts.

(s) Reconnect the fuel return hose to the clamp on the Vbank cover.

3. INSPECT FUEL PUMP

(a) Remove the No.1 rear seats.

(b) Remove the 2 rear door scuff plates, the step plates and the rear seat lock covers.

(c) Pull off the front and rear floor carpets.

(d) Remove the 2 screws and the rear floor service hole cover.

(e) Disconnect the fuel pump & sender gauge connector.

(f) Using an ohmmeter, measure the resistance between terminal 4 and 5.

Resistance: 0.2 - 3.0 W at 20C (68F)

If the resistance is not as specified, replace the fuel pump and/ or the lead wire.

(g) Inspect the fuel pump operation.

Connect the battery positive (+) lead to terminal 4 of the connector, and the battery negative (-) lead to terminal 5.

Check that the fuel pump operates.

NOTICE:

• These tests must be done quickly (within 10 seconds) to prevent the coil burning out.
• Keep the fuel pump as far away from the battery as possible.
• Always change the connection on the battery side.

If operation is not as specified, replace the fuel pump and/or lead wire.

(h) Reconnect the fuel pump & sender gauge connector.

(i) Reinstall the rear floor service hole cover with the 2 screws.

(j) Reinstall the front and rear floor carpets.

(k) Remove the 2 rear door scuff plates, the step plates and the rear sear lock covers.

(l) Reinstall the No.1 rear seats.

Installation

On-vehicle inspection

Removal