Inspection Procedure

1. Disconnect the E57 cold start injector connector.
2. Measure the resistance according to the value (s) in the table below.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   1 - 2	20°C (68°F)	11.6 to 12.6 Ω

   Fig 1: Identifying Cold Start Injector Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE COLD START INJECTOR 

OK: Go to next step 

1. Turn the engine switch on (IG).
2. Measure the voltage according to the value (s) in the table below.

   Standard voltage 

   VOLTAGE SPECIFICATION
   
   

   Tester Connection	Specified condition
   STJ1 (E3-7) - E1 (E4-7)	9 to 14V

   Fig 2: Identifying ECM Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: REPLACE ECM 

NG: Go to next step 

1. Disconnect the E57 cold start injector connector.
2. Disconnect the E3 ECM connector.
3. Measure the resistance according to the value (s) in the table below.

   Standard (Check for open) 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Specified condition
   E57-1 - STJ1 (E3-7)	Below 1 Ω

   Standard (Check for short) 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Specified condition
   E57-1 or STJ1 (E3-7) - Body ground	10 kΩ or higher

   Fig 3: Identifying E3 ECM Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: CHECK AND REPLACE HARNESS AND CONNECTOR (COLD START INJECTOR - BATTERY POSITIVE TERMINAL)