Skid Control ECU Communication Stop Mode [05/2014 - ]: Procedure
- CHECK FOR OPEN IN CAN BUS LINES (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) MAIN LINE)
- Disconnect the cable from the negative (-) battery terminal.
- Disconnect the A5 skid control ECU (brake actuator assembly) connector.TEXT IN ILLUSTRATION
*a Front view of wire harness connector
(to Skid Control ECU (Brake Actuator Assembly)) - Measure the resistance according to the value(s) in the chart below.
Standard Resistance
Tester Connection Condition Specified Condition A5-26 (CANH) - A5-14 (CANL) Cable disconnected from negative (-) battery terminal 114 to 126 Ω
NG → REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) MAIN LINE)
OK: Go to next step
- CHECK FOR OPEN IN CAN BUS LINES (POWER SOURCE CIRCUIT)
- Measure the resistance according to the value(s) in the chart below.TEXT IN ILLUSTRATION
*a Front view of wire harness connector
(to Skid Control ECU (Brake Actuator Assembly))Standard Resistance
Tester Connection Condition Specified Condition A5-13 (GND2) - Body ground Cable disconnected from negative (-) battery terminal Below 1 Ω A5-38 (GND1) - Body ground Cable disconnected from negative (-) battery terminal Below 1 Ω - Connect the cable to the negative (-) battery terminal.
- Measure the voltage according to the value(s) in the chart below.TEXT IN ILLUSTRATION
*a Front view of wire harness connector
(to Skid Control ECU (Brake Actuator Assembly))Standard Voltage
Tester Connection Condition Specified Condition A5-1 (+BM) - Body ground Ignition switch off 11 to 14 V A5-25 (+BS) - Body ground Ignition switch off 11 to 14 V A5-28 (IG1) - Body ground Ignition switch ON 11 to 14 V
NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)
OK → See step 3
- Measure the resistance according to the value(s) in the chart below.
- REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY). Refer to REMOVAL [05/2014 - ]