Fuel Pump Relay On-Vehicle Inspection

Engine. Lexus Gs430, Gs300. Uzs190 Grs190
3Gr-Fse Engine Control System. Lexus Gs430, Gs300. Uzs190 Grs190

  1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

  2. INSPECT FUEL PUMP RELAY (Marking: F/PMP)

  3. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL

  4. PERFORM INITIALIZATION

Fuel Pump Relay -- On-Vehicle Inspection



1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation.


2. INSPECT FUEL PUMP RELAY (Marking: F/PMP)


Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fse Engine Control System.Sfi System.Fuel Pump Relay On-Vehicle Inspection

  1. Remove the engine room No. 2 relay block cover.

  1. Remove the fuel pump from the engine room No. 2 junction block.

  1. Measure the fuel pump relay resistance.

    Standard resistance:
    Tester Condition
    		Specified Condition
    1 - 2
    		63 to 91 Ω
    3 - 4
    		Below 10 kΩ or higher
    (when battery voltage is applied to terminals 1 and 2)

  1. Reinstall the fuel pump relay to the engine room No. 2 relay block.

  1. Reinstall the engine room No. 2 junction block cover.



3. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL


4. PERFORM INITIALIZATION

  1. Perform initialization (Click here).

    NOTICE:
    Certain systems need to be initialized after disconnecting and reconnecting the cable from the negative (-) battery terminal.