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Home >> Lexus >> 2007 >> IS 250 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (4GR-FSE) - DTC P0171 - P0606 >> DTC P0230 Fuel Pump Primary Circuit >> Inspection Procedure

Inspection Procedure

  1. CHECK ECM (FRP VOLTAGE) 
    1. Measure the voltage according to the value (s) in the table below.

      Standard voltage 

      VOLTAGE SPECIFICATION

      Tester Connection Condition Specified Condition
      FPR (A5-15) - E1 (E4-7) STA signal ON 9 to 14 V
      FPR (A5-15) - E1 (E4-7) STA signal OFF 0 to 3 V
      Fig 1: Identifying ECM Connector Terminals
      G05316433Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE ECM 

    OK: Go to next step 

  2. INSPECT RELAY (Marking: F/PMP) 
    1. Remove the F/PMP relay from the engine room J/B and R/B No. 2.
    2. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      3 - 4 Below 1 Ω
      3 - 4 10 kΩ or more (when battery voltage Is applied to terminals 1 and 2)
      Fig 2: Identifying F/PMP Relay Connector Terminals
      G05316434Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE RELAY 

    OK: Go to next step 

  3. CHECK HARNESS AND CONNECTOR (F/PMP RELAY - ECM) 
    1. Remove the F/PMP relay from the engine room J/B and R/B No. 2.
    2. Disconnect the A5 ECM connector.
    3. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      F/PMP relay terminal 2 - A5-15 (FPR) Below 1 Ω
      F/PMP relay terminal 2 or A5-15 (FPR) - Body Ground 10 kΩ or higher
      Fig 3: Identifying A5 ECM Connector
      G05316435Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE ECM 

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