Hand-held tester:

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

1. Standard: Operating sound can be heard from the relay. 

OK: Go to step   7 

NG: GO TO NEXT STEP 

1. Remove the circuit opening relay from the engine room J/B.
2. Check for continuity in the circuit opening relay.

   Standard: 

   TESTER CONNECTION AND TERMINAL SPECIFIED CONDITION
   
   

   Tester Connection	Specified Condition
   3 - 5	10 kΩ or higher
   	Below 1 Ω (Apply battery voltage to terminals 1 and 2)

3. Reinstall the circuit opening relay.

NG: REPLACE CIRCUIT OPENING RELAY 

Fig 1: Identifying Circuit Opening Relay Connector Terminal

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: GO TO NEXT STEP 

1. Turn the ignition switch to ON.
2. Measure the voltage between the specified terminals of the E6 and E8 ECM connectors.

Standard: 

NG: GO TO NEXT STEP 

Fig 2: Identifying Terminals E8 And E6 Of ECM Connector (FC Voltage)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Check the harness and the connector between the ECM connector and the circuit opening relay.
   1. Disconnect the E6 ECM connector.
   2. Remove the circuit opening relay from the engine room J/B.
   3. Check the resistance between the wire harness side connectors.

   Standard (Check for open): 

   TESTER CONNECTION AND TERMINAL SPECIFIED CONDITION
   
   

   Tester Connection	Specified Condition
   FC (E6-10) - Circuit opening relay (2)	Below 1

   Standard (Check for short): 

   TESTER CONNECTION AND TERMINAL SPECIFIED CONDITION
   
   

   Tester Connection	Specified Condition
   FC (E6-10) or Circuit opening relay (2) - Body ground	10 kΩ or higher

2. Reconnect the ECM connector.
3. Reinstall the circuit opening relay.

1. Inspect the IG2 fuse.
   • Remove the IG2 fuse from the engine room J/B.
   • Check for continuity in the IG2 fuse.

   Standard: Continuity 

   • Reinstall the IG2 fuse.
2. Remove the circuit opening relay from the engine room J/B.
3. Disconnect the I14 ignition switch connector.
4. Check the resistance between the wire harness side connectors.

   Standard (Check for open): 

   TESTER CONNECTION AND TERMINAL SPECIFIED CONDITION
   
   

   Tester Connection	Specified Condition
   Circuit opening relay - Ignition switch (I14-6)	Below 1 Ω

   Standard (Check for short): 

   TESTER CONNECTION AND TERMINAL SPECIFIED CONDITION
   
   

   Tester Connection	Specified Condition
   Circuit opening relay (1) or Ignition switch (I14-6) - Body ground	10 kΩ or higher

5. Reinstall the circuit opening relay.
6. Reconnect the ignition switch connector.
   Fig 3: Disconnecting E6 ECM Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   Fig 4: Identifying CIRUCIT Opening Relay And IG2 Fuse

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   Fig 5: Identifying Ignition Switch Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE ECM (See  REPLACEMENT  ) 

1. Inspect the fuel pump resistance.
   1. Measure the resistance between terminals 4 and 5.
      1. Standard: 0.2 to 3.0 Ω at 20°C (68°F) 
2. Inspect 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 do the switching at the battery side.

   NG: REPLACE FUEL PUMP (See  REMOVAL & INSTALLATION AND DISASSEMBLY & REASSEMBLY  ) 

   Fig 6: Identifying F15 Fuel Pump Connector (Component Side)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK: GO TO NEXT STEP 

1. Check the harness and the connector between the circuit opening relay and the fuel pump connector.
   1. Remove the circuit opening relay from the engine room J/B.
   2. Disconnect the F15 fuel pump connector.
   3. Check the resistance between the wire harness side connectors.

      Standard (Check for open): 

      TESTER CONNECTION AND TERMINAL SPECIFIED CONDITION
      
      

      Tester Connection	Specified Condition
      Circuit opening relay (3) - Fuel pump (F15-4)	Below 1 Ω

      Standard (Check for short): 

      TESTER CONNECTION AND TERMINAL SPECIFIED CONDITION
      
      

      Tester Connection	Specified Condition
      Circuit opening relay (3) or Fuel pump (F15-4) - Body ground	10 kΩ or higher

   4. Reinstall the circuit opening relay.
   5. Reconnect the fuel pump connector.
2. Check the harness and the connector between the fuel pump connector and the body ground.
   1. Disconnect the F15 fuel pump connector.
   2. Check the resistance between the wire harness side connectors and the body ground.

   Standard (Check for open): 

   TESTER CONNECTION AND TERMINAL SPECIFIED CONDITION
   
   

   Tester Connection	Specified Condition
   Fuel pump (F15-5) - Body ground	Below 1 Ω

3. Reconnect the fuel pump connector.
   Fig 7: Reconnecting Fuel Pump Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   Fig 8: Identifying F15 Fuel Pump Connector (Wire Harness Side)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: REPAIR OR REPLACE HARNESS OR CONNECTOR 

NG: REPLACE ECM (See  REPLACEMENT  )