DESCRIPTION
The solenoid relay is built into the master cylinder solenoid.
This relay supplies power to each solenoid. If the initial check is OK, after the ignition switch is turned to ON, the relay turns on.
DTC Code |
DTC Detection Condition |
Trouble Area |
---|---|---|
C0278 |
Either condition is met:
|
|
C0279 |
The following condition continues for at least 0.2 seconds.
|
WIRING DIAGRAM
Refer to DTCs C0226, C0236, C0246, C0256, C1225, C1226, C1227 and C1228 (See
page ).
CAUTION / NOTICE / HINT
NOTICE:
PROCEDURE
1. |
CHECK TERMINAL VOLTAGE (+BS) |
(a) Disconnect the A6 skid control ECU connector.
(b) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
2. |
CHECK HARNESS AND CONNECTOR (GND1, GND2 AND GND3 TERMINAL) |
(a) Disconnect the A6 and A7 skid control ECU connectors.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
A6-1 (GND1) - Body ground |
Always |
Below 1 Ω |
A6-32 (GND2) - Body ground |
Always |
Below 1 Ω |
A7-4 (GND3) - Body ground |
Always |
Below 1 Ω |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
3. |
RECONFIRM DTC |
HINT:
These codes are stored when a problem is detected in the master cylinder solenoid.
The solenoid relay is in the master cylinder solenoid.
Therefore, solenoid relay circuit inspections and relay unit inspections cannot be performed. Be sure to check if any DTC is output before replacing the master cylinder solenoid.
(a) Clear the DTCs (See page ).
(b) Drive the vehicle at a speed of approximately 32 km/h (20 mph) or more for 60 seconds or more.
(c) Check if the same DTCs are output (See page
).
HINT:
Reinstall the sensors, connectors, etc. and restore the previous vehicle conditions before rechecking for DTCs.
Result
Result |
Proceed to |
---|---|
DTC is output |
A |
DTC is not output |
B |
A | ![]() |
REPLACE MASTER CYLINDER SOLENOID |
B | ![]() |
USE SIMULATION METHOD TO CHECK |
Door Mirror Foot Light Circuit
DESCRIPTION
The main body ECU controls the door mirror foot light.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing
the following procedure.
PROCEDURE
1 ...
SRS airbags
The SRS airbags inflate when the vehicle is subjected to certain types of
severe impacts that may cause significant injury to the occupants. They work
together with the seat belts to help reduce the risk of death or serious injury.
SRS front airbags
1 ...