Inspection Procedure

1. Connect the hand-held tester to the DLC3.
2. Turn the ignition switch ON and push the hand-held tester main switch ON.
3. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / FUEL PUMP/SPD.
4. Check the relay operation while operating it with the hand-held tester.

   Standard: Operating noise can be heard from the relay. 

1. OK: Go to step   5 
2. NG: Go to next step. 

1. Remove the F/PMP relay from the engine room No.2 relay block (R/B).
2. Measure the resistance.

   Standard: 

   Fig 1: Specific Condition Chart

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   Fig 2: Identifying F/PMP Relay

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. NG: REPLACE RELAY (F/PMP) 
2. OK: GO TO NEXT STEP. 

1. Turn the ignition switch ON.
2. Measure the voltage between the specified terminals of the E6 ECM connectors.

   Standard: 

   Fig 3: Specific Condition Chart

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   Fig 4: Identifying ECM (FC Voltage)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. OK: REPLACE ECM (See  REPLACEMENT  ) 
2. NG: Go to next step. 

1. Check the wire harness between the ECM and the C/OPN relay.
   1. Disconnect the E6 ECM connector.
   2. Remove the C/OPN relay from the engine room No.2 R/B.
   3. Measure the resistance of the wire harness side connectors.
      Fig 5: Specific Condition Chart

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard: 

   Fig 6: Identifying ECM Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   Fig 7: Identifying C/OPN Relay

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Check the wire harness between the C/OPN relay and the l18 ignition switch.
   1. Check the IG2 fuse.
      • Remove the IG2 fuse from the engine room No.2 R/B.
      • Measure the resistance of the IG2 fuse.

        Standard: Below 1 Ω 

      • Reinstall the IG2 fuse.
   2. Remove the C/OPN relay from the engine room No.2 R/B.
   3. Disconnect the I18 ignition switch connector.
   4. Measure the resistance of the wire harness side connectors.
      Fig 8: Identifying Ignition Switch Connector

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      Fig 9: Specific Condition Chart

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
2. OK: Go to next step. 

REPLACE ECM (See  REPLACEMENT  ) 

1. Measure the fuel pump resistance.
   1. Measure the resistance between terminals 4 and 5.

   Resistance: 0.2 to 3.0 Ω at 20°C (68°F) 

2. Check the fuel pump operation
   1. Apply battery voltage to both the terminals. Check that the pump operates.
   NOTE:

   • These tests must be done quickly (within 10 seconds) to prevent the coil from burning out.
   • Keep fuel pump as far away from the battery as possible.
   • Always turn on and off the voltage on the battery side, not the fuel pump side.
   Fig 10: Identifying Fuel Pump Terminal

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. NG: REPLACE FUEL PUMP (See ) 
2. OK: GO TO NEXT STEP. 

1. Check the wire harness between the C/OPN relay and the fuel pump.
   1. Remove the C/OPN relay from the engine room No.2 R/B.
   2. Disconnect the F15 fuel pump connector.
   3. Measure the resistance of the wire harness side connectors.

      Standard: 

      Fig 11: Specific Condition Chart

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 12: Identifying C/OPN Relay

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Check the wire harness between the fuel pump and the body ground.
   1. Disconnect the F15 fuel pump connector.
   2. Measure the resistance between the wire harness side connectors and the body ground.

      Standard: 

      Fig 13: Specific Condition Chart

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 14: Identifying Fuel Pump Connector

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. OK: REPAIR OR REPLACE HARNESS AND CONNECTOR 
2. NG: Go to next step. 

REPLACE ECM (See  REPLACEMENT  )