Parking Assist ECU Communication Stop Mode [06/2018 - 09/2022]: Procedure
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- CHECK FOR OPEN IN CAN BUS LINES (PARKING ASSIST ECU BRANCH LINE)
- Disconnect the cable from the negative (-) auxiliary battery terminal.
- Disconnect the N44 parking assist ECU connector.
- Measure the resistance according to the value(s) in the table below.
*a Front view of wire harness connector
(to Parking Assist ECU)Standard Resistance
Tester Connection Condition Specified Condition N44-11 (CANH) - N44-12 (CANL) Cable disconnected from negative (-) auxiliary 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.
*a Front view of wire harness connector
(to Parking Assist ECU)Standard Resistance
Tester Connection Condition Specified Condition N44-4 (GND1) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω - Reconnect the cable to the negative (-) auxiliary battery terminal.
- Measure the voltage according to the value(s) in the table below.
Standard Voltage
Tester Connection Condition Specified Condition N44-1 (+B) - Body ground Power switch off 11 to 14 V N44-2 (ACC) - Body ground Power switch on (ACC) 11 to 14 V N44-3 (IG) - Body ground Power switch on (IG) 11 to 14 V Result
Result OK NG
Result:
OK
REPLACE PARKING ASSIST ECU. Refer to REMOVAL [06/2018 - 09/2022]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)
- Measure the resistance according to the value(s) in the table below.