SSANGYONG Rexton Y200 Manual page 957

4E-78 ABS AND TCS
DIAGNOSTIC TROUBLE CODE (DTC) 161 - STOPLAMP SWITCH FAULT
Circuit Description
When the brake pedal is pressed, the contacts on the
brake light switch close to illuminate the brake lights.
Battery voltage is also applied to terminal 14 of the
electronic brake control module (EBCM), which signals
the ABS controller that the brakes are applied and ABS
may be needed. Without this, signals from a wheel
speed sensor that may indicate the need for ABS
intervention are questionable. When the brake pedal
is not pressed, the EBCM terminal 14 is grounded
through the stoplamps.
Diagnosis
This procedure will check whether there is no output or
constant output from the stoplamp switch and will
determine the cause as a faulty switch or a problem in
the circuitry.
Cause
•
The ground connection or the positive connection
at the EBCM has failed.
•
There is an open, short to ground, of short to positive
in the vehicle wiring.
•
The stoplamp switch has failed.
Action Taken When the DTC Sets
The system records a DTC 161. ABS operation is not
disabled.
Test description
The number(s) below refer to step(s) on the diagnostic
table.
12. This step begins the process of troubleshooting
stoplamps that are always on.
Diagnostic Aids
Inspect the wiring and the connectors carefully and
thoroughly. Failure to do so could result in misdiagno-
sis, causing part replacement with the reappearance
of the malfunction.
YAD4E260
SSANGYONG Y200