Fuel Injector Circuit [09/2022 - ]: Procedure

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1. Disconnect the fuel injector assembly connector.
2. Turn the power switch on (IG).
3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   C33-1 (#1) - Body ground	Power switch on (IG)	11 to 14 V
   C34-1 (#2) - Body ground	Power switch on (IG)	11 to 14 V
   C35-1 (#3) - Body ground	Power switch on (IG)	11 to 14 V
   C36-1 (#4) - Body ground	Power switch on (IG)	11 to 14 V

   Result

   Proceed to
   OK
   NG

Result: 

NG 

See step  4

Result: 

OK 

See step  2

1. Inspect the fuel injector assembly.

   Refer to INSPECTION [01/2019 - ]

   HINT: 

   Perform "Inspection After Repair" after replacing the fuel injector assembly.

   Refer to INITIALIZATION [09/2022 - ]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE FUEL INJECTOR ASSEMBLY. Refer to  REMOVAL [09/2022 - 11/2022]  , or refer to  REMOVAL [11/2022 - ] 

Result: 

OK 

See step  3

1. Disconnect the fuel injector assembly connector.
2. Disconnect the ECM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   C33-2 (#10) - C147-34 (#10)	Always	Below 1 Ω
   C34-2 (#20) - C147-35 (#20)	Always	Below 1 Ω
   C35-2 (#30) - C147-36 (#30)	Always	Below 1 Ω
   C36-2 (#40) - C147-37 (#40)	Always	Below 1 Ω
   C33-2 (#10) or C147-34 (#10) - Body ground and other terminals	Always	10 kΩ or higher
   C34-2 (#20) or C147-35 (#20) - Body ground and other terminals	Always	10 kΩ or higher
   C35-2 (#30) or C147-36 (#30) - Body ground and other terminals	Always	10 kΩ or higher
   C36-2 (#40) or C147-37 (#40) - Body ground and other terminals	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [09/2022 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

1. Disconnect the IGP-MAIN relay from No. 1 engine room relay block and No. 1 junction block assembly.
2. Disconnect the fuel injector assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   3 (IGP-MAIN relay) - C33-1 (#1)	Always	Below 1 Ω
   3 (IGP-MAIN relay) - C34-1 (#2)	Always	Below 1 Ω
   3 (IGP-MAIN relay) - C35-1 (#3)	Always	Below 1 Ω
   3 (IGP-MAIN relay) - C36-1 (#4)	Always	Below 1 Ω
   3 (IGP-MAIN relay) or C33-1 (#1) - Body ground and other terminals	Always	10 kΩ or higher
   3 (IGP-MAIN relay) or C34-1 (#2) - Body ground and other terminals	Always	10 kΩ or higher
   3 (IGP-MAIN relay) or C35-1 (#3) - Body ground and other terminals	Always	10 kΩ or higher
   3 (IGP-MAIN relay) or C36-1 (#4) - Body ground and other terminals	Always	10 kΩ or higher

   HINT: 

   If a short is detected in any of the above circuits, there may be a malfunction in the circuit of a connected ECU.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

GO TO ECM POWER SOURCE CIRCUIT. Refer to  ECM Power Source Circuit [09/2022 - ]  

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR