Skid Control ECU Communication Stop Mode [02/2019 - 12/2021]: Procedure
WARNING: This page is about a different variant/trim than selected.
- CHECK FOR OPEN IN CAN BUS WIRE (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY [SKID CONTROL ECU] BRANCH WIRE)
- Disconnect the cable from the negative (-) auxiliary battery terminal.
- Disconnect the brake booster with master cylinder assembly (skid control ECU) connector.
*a Front view of wire harness connector
(to Brake Booster with Master Cylinder Assembly [Skid Control ECU]) - Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition A42-37 (CA1H) - A42-38 (CA1L) Cable disconnected from negative (-) auxiliary battery terminal 54 to 69 Ω A42-35 (CA2H) - A42-34 (CA2L) Cable disconnected from negative (-) auxiliary battery terminal 54 to 69 Ω Result
Proceed to OK NG
Result:
NG
REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR
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 A42-28 (GND) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω A42-27 (GND2) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω A42-26 (GND3) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω A42-25 (GND4) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω A42-24 (GND5) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω A42-23 (GND6) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω *a Front view of wire harness connector
(to Brake Booster with Master Cylinder Assembly [Skid Control ECU]) - Reconnect the cable to the negative (-) auxiliary battery terminal.NOTE:
When disconnecting the cable, some systems need to be initialized after the cable is reconnected.
Refer to INITIALIZATION [02/2019 - 10/2019] , or refer to INITIALIZATION [10/2019 - 06/2020] , or refer to INITIALIZATION [06/2020 - 08/2020] , or refer to INITIALIZATION [08/2020 - 12/2021]
- Measure the voltage according to the value(s) in the table below.
Standard Voltage
Tester Connection Switch Condition Specified Condition A42-16 (IG1) - Body ground Ignition switch ON 11 to 14 V Ignition switch off Below 1 V A42-12 (IG2) - Body ground Ignition switch ON 11 to 14 V Ignition switch off Below 1 V A42-14 (BI) - Body ground Ignition switch off 11 to 14 V A42-15 (BS) - Body ground Ignition switch off 11 to 14 V Result
Proceed to OK NG
Result:
OK
REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY (SKID CONTROL ECU)
Refer to REMOVAL [02/2019 - 10/2019] , or refer to REMOVAL [10/2019 - 08/2020] , or refer to REMOVAL [08/2020 - 12/2021]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
- Measure the resistance according to the value(s) in the table below.