Suzuki WagonR+ RB310 Service Manual page 2326

ABS HYDRAULIC UNIT/CONTROL MODULE
ASSEMBLY
ABS control module is a component of ABS hydraulic unit/control
module assembly and has the following functions.
Self-Diagnosis Function
ABS control module diagnoses conditions of the system compo-
nent parts (whether or not there is any abnormality) all the time and
indicates the results (warning of abnormality occurrence and DTC)
through the "ABS" warning lamp as described below.
NOTE:
ABS control module assembly may turns ON brake warning
lamp as well as "ABS" warning lamp depending on the trouble
that detected by ABS control module.
1) When ignition switch is turned ON, "ABS" warning lamp (1) lights
for 2 seconds to check its bulb and circuit.
2) When no abnormality has been detected (the system is in good
condition), "ABS" warning lamp turns OFF after 2 seconds.
3) When an abnormality in the system is detected, "ABS" warning
lamp is kept light and the area where that abnormality lies is
stored in the memory in ABS control module.
4) When diagnosis switch terminal (2) of monitor coupler (3) is
grounded as shown in figure, the abnormal area is output as DTC.
SYSTEM CONDITION
No trouble
in the past
In good
condition at
Trouble
present resent
occurred in occurred in
the past
No trouble No trouble
in the past
Abnormality y
exists at present
Trouble
occurred in
the past
NOTE:
The current code and the history code are displayed with-
out any classification.
Fail-Safe Function
When an abnormality occurs (an abnormal DTC is detected), ABS
control module turns OFF the fail-safe relay which supplies power
to ABS hydraulic unit. Thus, with ABS not operating, brakes func-
tion just like the brake system of the vehicle without ABS.
ANTILOCK BRAKE SYSTEM (ABS) 5E1-5
DIAGNOSIS
SWITCH WARNING
TERMINAL
Open
Grounded
Open
Grounded History DTC
Open
Grounded
Open
Current and
Grounded
history DTC
"ABS"
LAMP
OFF
DTC 12
OFF
ON
Current
DTC
ON