Inspection Procedure

1. Measure the voltage of the ECM connectors.

   Standard voltage 

   VOLTAGE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   E6-30 (FPR) - E6-1 (E1)	STA signal ON	9 to 14 V
   E6-30 (FPR) - E6-1 (E1)	STA signal OFF	0 to 3V

NG: REPLACE ECM 

Fig 1: Identifying ECM Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step 

1. Remove the fuel pump relay from the engine room relay block.
2. Measure the resistance of the fuel pump relay.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Specified Condition
   3 - 4	Below 1 Ω
   3 - 5	10 kΩ or higher
   3 - 4	10 kΩ or higher (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)

NG: REPLACE FUEL PUMP RELAY 

Fig 2: Identifying Fuel Pump Relay Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step 

1. Check harness and connector (see ELECTRONIC CIRCUIT INSPECTION PROCEDURE ).

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE ECM