DESCRIPTION
The motor relay (semiconductor relay) is built into the master cylinder solenoid and drives the pump motor based on a signal from the skid control ECU.
DTC Code |
DTC Detection Condition |
Trouble Area |
---|---|---|
C1257 |
There is an open in the motor system circuit (motor input circuit). |
Master cylinder solenoid (Skid control ECU) |
CAUTION / NOTICE / HINT
NOTICE:
When replacing the master cylinder solenoid, perform calibration (See page
).
PROCEDURE
1. |
CHECK PUMP MOTOR OPERATION |
(a) Turn the ignition switch off.
(b) Disconnect the A6 skid control ECU connector.
(c) Depress the brake pedal more than 40 times.
(d) Turn the ignition switch to ON.
(e) Check pump motor operation.
OK:
Pump motor operates normally.
NG | ![]() |
REPLACE MASTER CYLINDER SOLENOID |
|
2. |
RECONFIRM DTC |
(a) Turn the ignition switch off.
(b) Reconnect the A6 skid control ECU connector.
(c) Turn the ignition switch to ON.
(d) Clear the DTCs (See page ).
(e) Turn the ignition switch off.
(f) Check if the same DTC is output (See page
).
Result |
Proceed to |
---|---|
DTC is output |
A |
DTC is not output |
B |
A | ![]() |
REPLACE MASTER CYLINDER SOLENOID |
B | ![]() |
USE SIMULATION METHOD TO CHECK |
Weight limits
• The gross trailer weight must never exceed the TWR described in the table.
• The gross combination weight must never exceed the GCWR described in the
table.
• The gross vehicle weight must never exceed the GVWR indicated on the
Certification ...
Rear Power Window Switch
Components
COMPONENTS
ILLUSTRATION
Inspection
INSPECTION
PROCEDURE
1. INSPECT REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
...