DTC B2271-11: IG Circuit Short to Ground [09/2023 - ]: Procedure
- CHECK HARNESS AND CONNECTOR (POWER SOURCE)
Pre-procedure1
- Disconnect the D38 certification ECU (smart key ECU assembly) connector.
- Measure the voltage according to the value(s) in the table below.
Standard Voltage
Tester Connection Condition Specified Condition Result D38-6 (+B) - Body ground Ignition switch off 11 to 14 V V Result
Proceed to OK NG
Post-procedure1
- None
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR IN CIRCUIT CONNECTED TO POWER SOURCE
Result:
OK
See step 2
- CHECK HARNESS AND CONNECTOR (GROUND)
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Result D38-29 (E) - Body ground Always Below 1 Ω Ω Result
Proceed to OK NG
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
Result:
OK
See step 3
- Measure the resistance according to the value(s) in the table below.
- CHECK HARNESS AND CONNECTOR (POWER DISTRIBUTION BOX ASSEMBLY - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) AND BODY GROUND)
Pre-procedure1
- Disconnect the B7 certification ECU (smart key ECU assembly) connector.
- Disconnect the D62 and D63 power distribution box assembly connectors.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Result D63-17 - B7-24 (IGPD) Always Below 1 Ω Ω D62-10 - B7-11 (IGRD) Always Below 1 Ω Ω D63-17 or B7-24 (IGPD) - Other terminals and body ground Always 10 kΩ or higher kΩ D62-10 or B7-11 (IGRD) - Other terminals and body ground Always 10 kΩ or higher kΩ Result
Proceed to OK NG
Post-procedure1
- None
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
Result:
OK
See step 4
- CHECK POWER DISTRIBUTION BOX ASSEMBLY
Pre-procedure1
- Disconnect the B58 power distribution box assembly connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Result D63-17 - B58-14 Always Below 1 Ω Ω D63-17 or B58-14 - Other terminals Always 10 kΩ or higher kΩ Result
Proceed to OK NG
Post-procedure1
- None
Result:
NG
REPLACE POWER DISTRIBUTION BOX ASSEMBLY. Refer to REMOVAL [09/2023 - ]
Result:
OK
See step 5
- CHECK HARNESS AND CONNECTOR (POWER DISTRIBUTION BOX ASSEMBLY - IGP RELAY)
Pre-procedure1
- Remove the IGP NO. 1 relay from the No. 1 engine room relay block and No. 1 junction block assembly.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Result B58-14 - IGP NO. 1 relay terminal 1 Always Below 1 Ω Ω B58-14 or - Other terminals and body ground Always 10 kΩ or higher kΩ Result
Proceed to OK NG
Post-procedure1
- None
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
Result:
OK
See step 6
- INSPECT IGP NO. 1 RELAY
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Result 3 - 5 Auxiliary battery voltage applied between terminals 1 and 2 Below 1 Ω Ω 3 - 5 Auxiliary battery voltage not applied between terminals 1 and 2 10 kΩ or higher kΩ *1 IGP NO. 1 Relay Result
Proceed to OK NG
Result:
NG
REPLACE IGP RELAY
Result:
OK
See step 7
- Measure the resistance according to the value(s) in the table below.
- CHECK POWER DISTRIBUTION BOX ASSEMBLY
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Result D62-10 - D62-36 Always 20 Ω or higher Ω D62-10 - D63-41 Always 20 Ω or higher Ω D62-10 or D62-36 - Other terminals Always 10 kΩ or higher kΩ D62-10 or D63-41 - Other terminals Always 10 kΩ or higher kΩ Result
Proceed to OK NG
Result:
OK
REPLACE SMART KEY ECU ASSEMBLY. Refer to REMOVAL [09/2023 - 12/2023] , or refer to REMOVAL [12/2023 - ]
Result:
NG
REPLACE POWER DISTRIBUTION BOX ASSEMBLY. Refer to REMOVAL [09/2023 - ]
- Measure the resistance according to the value(s) in the table below.