ECU Power Source Circuit [09/2020 - ]: Procedure
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- CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - BODY GROUND)
- Disconnect the P41 parking assist ECU connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition P41-4 (GND1) - Body ground Always Below 1 Ω Result
Proceed to OK NG
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
Result:
OK
See step 2
- CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU POWER SOURCE)
- Disconnect the P41 parking assist ECU connector.
- Measure the voltage according to the value(s) in the table below.
Standard Voltage
Tester Connection Condition Specified Condition P41-1 (+B) - P41-4 (GND1) Ignition switch off 11 to 14 V P41-2 (ACC) - P41-4 (GND1) Ignition switch ACC 11 to 14 V Ignition switch off Below 1 V P41-3 (IG) - P41-4 (GND1) Ignition switch ON 11 to 14 V Ignition switch off Below 1 V Result
Proceed to OK NG
Result:
OK
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to PROBLEM SYMPTOMS TABLE [09/2020 - ]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR