Brake Actuator (Skid Control ECU) Communication Stop Mode [11/2017 - 01/2023]: Procedure
- CHECK FOR OPEN IN CAN BUS LINES (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) BRANCH LINE))
- Disconnect the cable from the negative (-) battery terminal.
- Disconnect the A86 skid control ECU (brake actuator assembly) connector.
*a Front view of wire harness connector
(to Skid Control ECU (Brake Actuator Assembly)) - Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition A86-22 (CANH) - A86-10 (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 (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY))
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 Skid Control ECU (Brake Actuator Assembly))Standard Resistance
Tester Connection Condition Specified Condition A86-25 (GND1) - Body ground Cable disconnected from negative (-) battery terminal Below 1 Ω A86-1 (GND2) - 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 A86-12 (IG1) - Body ground Engine switch on (IG) 11 to 14 V A86-13 (BM) - Body ground Always 11 to 14 V A86-38 (+BS) - Body ground Always 11 to 14 V Result
Result OK NG
Result:
OK
REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY). Refer to REMOVAL [11/2017 - 01/2023]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)
- Measure the resistance according to the value(s) in the table below.