Parking Assist ECU Communication Stop Mode [11/2021 - ]: Procedure
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- CHECK FOR OPEN IN CAN BUS LINES (PARKING ASSIST ECU BRANCH LINE)
- Disconnect the cable from the negative (-) battery terminal.
- Disconnect the D56 parking assist ECU connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition D56-12 (CANH) - D56-13 (CANL) Cable disconnected from negative (-) battery terminal 54 to 69 Ω Result
Result OK NG
Result:
NG
REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (PARKING ASSIST ECU)
Result:
OK
See step 2
- CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition D56-4 (GND1) - Body ground Cable disconnected from negative (-) battery terminal Below 1 Ω - Reconnect the cable to the negative (-) battery terminal.
- Measure the voltage according to the value(s) in the table below.
Standard Voltage
Tester Connection Condition Specified Condition D56-1 (+B) - Body ground Always 11 to 14 V D56-2 (IG) - Body ground Ignition switch ON 11 to 14 V Result
Result OK NG
Result:
OK
REPLACE PARKING ASSIST ECU. Refer to REMOVAL [11/2021 - 03/2024] , or refer to REMOVAL [03/2024 - ]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)
- Measure the resistance according to the value(s) in the table below.