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 |
Passenger Airbag ON/OFF Indicator Circuit Malfunction (B1660/43)
DESCRIPTION
The passenger airbag ON/OFF indicator circuit consists of the airbag sensor assembly
and passenger airbag ON/OFF indicator.
The passenger airbag ON/OFF indicator indicates the operation condition of the
instrument panel passenger airbag, lowe ...
XM® Satellite Radio (if equipped)
Receiving XM® Satellite Radio
Press
or
.
The display changes as follows each time
or
is pressed.
Type A: AM → SAT1 → SAT2 → SAT3 Type B and C: AM → FM → SAT
Turn
or
to select the desired channel in all
the categories or press “� ...