LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 2006 >> Corolla CE, Automatic >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Engine Control System (SFI) (2ZZ-GE) - Diagnostics) >> Fuel Pump Control Circuit >> Inspection Procedure >> OBD II scan tool (excluding the hand-held tester):

OBD II scan tool (excluding the hand-held tester):

WARNING: This page is about a different variant/trim than selected.
  1. CHECK OPERATION OF FUEL PUMP 
    1. Turn the ignition switch to ON.
    2. Connect terminals FC and E01 of the ECM connector.
    3. Check for fuel pump operating sounds.

      Result: Operating sounds can be heard from fuel pump. 

      Fig 1: Identifying Terminals Of E3 And E5 ECM Connector
      G02599526Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE  
    2. NG: GO TO NEXT STEP 
  2. INSPECT ECM POWER SOURCE CIRCUIT (See  ECM POWER SOURCE CIRCUIT  ) 
    1. NG: REPAIR OR REPLACE ECM POWER SOURCE CIRCUIT 
    2. OK: GO TO NEXT STEP 
  3. INSPECT CIRCUIT OPENING RELAY 
    1. Remove the circuit opening relay from the instrument panel J/B.
    2. Check the circuit opening relay resistance.

      Standard: 

      CIRCUIT OPENING RELAY RESISTANCE

      Tester Connections Specified Conditions
      3 - 5 10 kΩ or higher
      3 - 5 Below 1 Ω (when battery voltage applied to terminals 1 and 2)
    3. Reinstall the circuit opening relay.
      Fig 2: Inspecting Circuit Opening Relay
      G02599527Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPLACE CIRCUIT OPENING RELAY 
    2. OK: GO TO NEXT STEP 
  4. INSPECT ECM (FC VOLTAGE) 
    1. Turn the ignition switch to ON.
    2. Measure the voltage between the terminals of the E3 and E5 ECM connectors.

      Standard: 

      ECM (FC VOLTAGE)

      Tester Connections Specified Conditions
      FC (E5-16) - E01 (E3-7) Between 9 V and 14 V
      Fig 3: Inspecting ECM (FC Voltage)
      G02599528Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. OK: REPLACE ECM (See  ECM (1ZZ-FE/2ZZ-GE) REPLACEMENT  ) 
    2. NG: GO TO NEXT STEP 
  5. CHECK HARNESS AND CONNECTOR (EFI RELAY - CIRCUIT OPENING RELAY) 
    1. Remove the EFI relay from the engine room R/B.
    2. Remove the circuit opening relay from the instrument panel J/B.
    3. Check the resistance.

      Standard (Check for open): 

      EFI RELAY - CIRCUIT OPENING RELAY RESISTANCE (CHECK FOR OPEN)

      Tester Connections Specified Conditions
      EFI relay (1) - Circuit opening relay (1) Below 1 Ω
      EFI relay (1) - Circuit opening relay (5) Below 1 Ω
      Fig 4: Removing EFI Relay
      G02599529Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard (Check for short): 

      EFI RELAY - CIRCUIT OPENING RELAY RESISTANCE (CHECK FOR SHORT)

      Tester Connections Specified Conditions
      EFI relay (1) or Circuit opening relay (1) - Body ground 10 kΩ or higher
      EFI relay (3) or Circuit opening relay (5) - Body ground 10 kΩ or higher
    4. Reinstall the circuit opening relay.
    5. Reinstall the EFI relay.
      Fig 5: Removing Circuit Opening Relay
      G02599530Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
    2. OK: GO TO NEXT STEP 

      REPLACE ECM (See  ECM (1ZZ-FE/2ZZ-GE) REPLACEMENT  ) 

  6. INSPECT FUEL PUMP (See  INSPECTION  ) 
    1. NG: REPLACE FUEL PUMP (See  REMOVAL & INSTALLATION AND DISASSEMBLY & REASSEMBLY  ) 
    2. OK: GO TO NEXT STEP 
  7. CHECK HARNESS AND CONNECTOR (CIRCUIT OPENING RELAY - FUEL PUMP, FUEL PUMP - BODY GROUND) 
    1. Remove the circuit opening relay from the instrument panel J/B.
    2. Disconnect the F10 fuel pump connector.
    3. Check the resistance.

      Standard (Check for open): 

      CIRCUIT OPENING RELAY - FUEL PUMP, FUEL PUMP - BODY GROUND RESISTANCE (CHECK FOR OPEN)

      Tester Connections Specified Conditions
      Circuit opening relay (3) - Fuel pump (F10-4) Below 1 Ω
      Fuel pump (F10-5) - Body ground Below 1 Ω
      Fig 6: Removing Circuit Opening Relay
      G02599531Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard (Check for short): 

      CIRCUIT OPENING RELAY - FUEL PUMP, FUEL PUMP - BODY GROUND RESISTANCE (CHECK FOR SHORT)

      Tester Connections Specified Conditions
      Circuit opening relay (3) or Fuel pump (F10-4) - Body ground 10 kΩ or higher
    4. Reconnect the fuel pump connector.
    5. Reinstall the circuit opening relay.
      Fig 7: Identifying Terminals Of F10 Fuel Pump Connector
      G02599532Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
    2. OK: GO TO NEXT STEP 

      REPLACE ECM (See  ECM (1ZZ-FE/2ZZ-GE) REPLACEMENT  ) 

scientia non olet · About LEMON Manuals