REPAIR OR REPLACE HARNESS OR CONNECTOR
3. RECONFIRM DTC
hese codes are stored when a problem is identified in the skid control ECU (brake actuator assembly). The
motor relay is in the skid control ECU (brake actuator assembly). Therefore, motor relay inspections and
motor relay unit inspections cannot be performed. Be sure to check if any DTCs are output before replacing
the brake actuator assembly.
(a) Reconnect the S1 skid control ECU (brake actuator assembly) connector.
(b) Clear the DTC
(c) Turn the ignition switch off.
(d) Start the engine.
(e) Drive the vehicle at a speed of 20 km/h (12 mph) or more for 30 seconds or more.
(f) Check if the same DTC is recorded .
RESULT PROCEED TO
DTCs C142B, C146C and C146D are not output A
DTCs C142B, C146C and/or C146D are output B
f a speed signal of 6 km/h (4 mph) or more is input to the skid control ECU (brake actuator assembly),
with the ignition switch to ON and the stop light switch off, the ECU performs self diagnosis of the motor
and solenoid circuits.
If the normal system code is output (the trouble code is not output), slightly jiggle the connectors, wire
harness, and fuses of the skid control ECU (brake actuator assembly). Make sure that no DTCs are output.
If any DTCs are output while jiggling a connector or wire harness from the skid control ECU (brake actuator
assembly), inspect and repair the connector or wire harness.
The DTCs were probably output due to a bad connection of the connector terminal.
REPLACE BRAKE ACTUATOR ASSEMBLY
USE SIMULATION METHOD TO CHECK