Inspection Procedure

1. Connect the intelligent tester to the DLC3.
2. Turn the ignition switch to the ON position and turn the intelligent tester ON.
3. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / FUEL PUMP SP CTL.
4. Check the operation of the relay while operating it using the intelligent tester.

   OK: Operating noise can be heard from the relay. 

OK: CHECK FOR INTERMITTENT PROBLEMS 

NG: Go to Next Step 

Fig 1: Inspecting Fuel Pump Relay

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Remove the FUEL PUMP relay from the engine room junction block.
2. Measure the resistance according to the value (s) in the table below.

   Standard resistance 

   STANDARD RESISTANCE SPECIFICATIONS
   
   

   Tester Connection	Specified Condition
   3 - 4	Below 1 Ω
   3 - 5	10 kΩ or higher
   3 - 4	10 kΩ or more (when battery voltage is applied to terminals 1 and 2)
   3 - 5	Below 1 Ω (when battery voltage is applied to terminals 1 and 2)

3. Reinstall the FUEL PUMP relay.

NG: REPLACE RELAY (FUEL PUMP RELAY) 

OK: Go to Next Step 

1. Remove the FUEL PUMP relay from the engine room junction block.
2. Disconnect the E11 ECM connector.
   Fig 2: Disconnecting E11 ECM Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Measure the resistance according to the value (s) in the table below.

   Standard resistance 

   STANDARD RESISTANCE SPECIFICATIONS
   
   

   Tester Connection	Specified Condition
   FUEL PUMP relay terminal 1 - FPR (E11-30)	Below 1 Ω
   FUEL PUMP relay terminal 1 or FPR (E11-30) - Body Ground	10 kΩ or higher

4. Reconnect the ECM connector.
5. Reinstall the FUEL PUMP relay.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (FUEL PUMP RELAY - ECM) 

OK: REPLACE ECM  (See REMOVAL )