Ignition Circuit [10/2022 - ]: Procedure
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- CHECK TERMINAL VOLTAGE (POWER SOURCE OF IGNITION COIL ASSEMBLY)
- Disconnect the ignition coil assembly connectors.
- Turn the ignition switch to ON.
- Measure the voltage according to the value(s) in the table below.
Standard Voltage
Tester Connection Condition Specified Condition B1-1 (+B) - B1-3 (GND) Ignition switch ON 11 to 14 V B2-1 (+B) - B2-3 (GND) Ignition switch ON 11 to 14 V B3-1 (+B) - B3-3 (GND) Ignition switch ON 11 to 14 V B4-1 (+B) - B4-3 (GND) Ignition switch ON 11 to 14 V Result
Proceed to OK NG
Result:
NG
See step 3
Result:
OK
See step 2
- CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - ECM)
- Disconnect the ignition coil assembly connectors.
- Disconnect the ECM connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition B1-2 (IGT1) - B28-49 (IGT1) Always Below 1 Ω B2-2 (IGT2) - B28-48 (IGT2) Always Below 1 Ω B3-2 (IGT3) - B28-47 (IGT3) Always Below 1 Ω B4-2 (IGT4) - B28-46 (IGT4) Always Below 1 Ω B1-2 (IGT1) or B28-49 (IGT1) - Body ground and other terminals Always 10 kΩ or higher B2-2 (IGT2) or B28-48 (IGT2) - Body ground and other terminals Always 10 kΩ or higher B3-2 (IGT3) or B28-47 (IGT3) - Body ground and other terminals Always 10 kΩ or higher B4-2 (IGT4) or B28-46 (IGT4) - Body ground and other terminals Always 10 kΩ or higher Result
Proceed to OK NG
Result:
OK
REPLACE ECM. Refer to REMOVAL [10/2022 - 08/2023] , or refer to REMOVAL [08/2023 - ]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
- CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - BODY GROUND)
- Disconnect the ignition coil assembly connectors.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition B1-3 (GND) - Body ground Always Below 1 Ω B2-3 (GND) - Body ground Always Below 1 Ω B3-3 (GND) - Body ground Always Below 1 Ω B4-3 (GND) - Body ground Always Below 1 Ω Result
Proceed to OK NG
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
Result:
OK
See step 4
- CHECK HARNESS AND CONNECTOR (IGP NO. 1 RELAY - IGNITION COIL ASSEMBLY)
- Disconnect the IGP NO. 1 relay from No. 1 engine room relay block and No. 1 junction block assembly.
- Disconnect the ignition coil assembly connectors.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition 5 (IGP NO. 1 relay) - B1-1 (+B) Always Below 1 Ω 5 (IGP NO. 1 relay) - B2-1 (+B) Always Below 1 Ω 5 (IGP NO. 1 relay) - B3-1 (+B) Always Below 1 Ω 5 (IGP NO. 1 relay) - B4-1 (+B) Always Below 1 Ω 5 (IGP NO. 1 relay) or B1-1 (+B) - Body ground and other terminals Always 10 kΩ or higher 5 (IGP NO. 1 relay) or B2-1 (+B) - Body ground and other terminals Always 10 kΩ or higher 5 (IGP NO. 1 relay) or B3-1 (+B) - Body ground and other terminals Always 10 kΩ or higher 5 (IGP NO. 1 relay) or B4-1 (+B) - Body ground and other terminals Always 10 kΩ or higher Result
Proceed to OK NG
Result:
OK
GO TO ECM POWER SOURCE CIRCUIT. Refer to ECM Power Source Circuit [10/2022 - ]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR