Bus Buffer ECU Communication Stop Mode [03/2024 - ]: Procedure
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- CHECK VEHICLE TYPE
- Check whether dealer installed options that support CAN communication are installed.
Result
Result Proceed to Installed A Not installed B
Result:
B
See step 3
Result:
A
See step 2
- Check whether dealer installed options that support CAN communication are installed.
- CHECK FOR OPEN IN CAN BUS LINES (OPTION CONNECTOR (BUS BUFFER ECU) MAIN LINE)
- Disconnect the cable from the negative (-) battery terminal.
- Disconnect the D84 option connector (bus buffer ECU) connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition D84-2 (CAN+) - D84-1 (CAN-) Cable disconnected from negative (-) battery terminal 108 to 132 Ω Result
Result OK NG
Result:
OK
REPAIR OR REPLACE CAN COMPATIBLE OPTIONAL DEVICES
Result:
NG
REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (OPTION CONNECTOR (BUS BUFFER ECU))
- CHECK FOR DTC
- Initialize the ECU.
Body Electrical > Central Gateway > Utility
Tester Display Initialization Body Electrical > Main Body > Utility
Tester Display Initialization - Clear the DTCs.
Body Electrical > Main Body > Clear DTCs
- Read the DTCs.
Body Electrical > Main Body > Trouble Codes
Result
Result Proceed to DTC U1117-87 is not output from main body ECU (multiplex network body ECU) A DTC U1117-87 is output from main body ECU (multiplex network body ECU) B
Result:
A
END
Result:
B
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to REMOVAL [11/2021 - ]
- Initialize the ECU.