Fuel Injector Circuit [01/2019 - 09/2022]: Procedure
- CHECK TERMINAL VOLTAGE (POWER SOURCE OF FUEL INJECTOR ASSEMBLY)
*a Front view of wire harness connector
(to Fuel Injector Assembly)- Disconnect the fuel injector assembly connector.
- Turn the power switch on (IG).
- 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
- INSPECT FUEL INJECTOR ASSEMBLY (INJECTION AND VOLUME)
- Inspect the fuel injector assembly.
Refer to INSPECTION [01/2019 - ]
HINT:
Perform "Inspection After Repair" after replacing the fuel injector assembly.
Refer to INITIALIZATION [01/2019 - 09/2022]
Result
Proceed to OK NG
Result:
NG
REPLACE FUEL INJECTOR ASSEMBLY. Refer to REMOVAL [01/2019 - 04/2020] , or refer to REMOVAL [04/2020 - 09/2022]
Result:
OK
See step 3
- Inspect the fuel injector assembly.
- CHECK HARNESS AND CONNECTOR (FUEL INJECTOR ASSEMBLY - ECM)
- Disconnect the fuel injector assembly connector.
- Disconnect the ECM connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition C33-2 (#10) - C77-98 (#10) Always Below 1 Ω C34-2 (#20) - C77-95 (#20) Always Below 1 Ω C35-2 (#30) - C77-96 (#30) Always Below 1 Ω C36-2 (#40) - C77-97 (#40) Always Below 1 Ω C33-2 (#10) or C77-98 (#10) - Body ground and other terminals Always 10 kΩ or higher C34-2 (#20) or C77-95 (#20) - Body ground and other terminals Always 10 kΩ or higher C35-2 (#30) or C77-96 (#30) - Body ground and other terminals Always 10 kΩ or higher C36-2 (#40) or C77-97 (#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 [01/2019 - 04/2020] , or refer to PROBLEM SYMPTOMS TABLE [04/2020 - 09/2022]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
- CHECK HARNESS AND CONNECTOR (NO. 1 INTEGRATION RELAY - FUEL INJECTOR ASSEMBLY)
- Disconnect the No. 1 integration relay connector.
- Disconnect the fuel injector assembly connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition 2A-9 - C33-1 (#1) Always Below 1 Ω 2A-9 - C34-1 (#2) Always Below 1 Ω 2A-9 - C35-1 (#3) Always Below 1 Ω 2A-9 - C36-1 (#4) Always Below 1 Ω 2A-9 or C33-1 (#1) - Body ground and other terminals Always 10 kΩ or higher 2A-9 or C34-1 (#2) - Body ground and other terminals Always 10 kΩ or higher 2A-9 or C35-1 (#3) - Body ground and other terminals Always 10 kΩ or higher 2A-9 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 [01/2019 - 09/2022]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR