Suzuki SY413 Service Manual page 1802

5B-18 ANTILOCK BRAKE SYSTEM (ABS)
TABLE – C ABS WARNING LAMP CIRCUIT CHECK – THE LAMP FLASHES
CONTINUOUSLY WHILE IGNITION SWITCH IS ON POSITION
Refer to TABLE – A for System Circuit Diagram.
CIRCUIT DESCRIPTION
When the diagnosis switch terminal is shorted or connected to the ground with the ignition switch ON position, the
diagnostic trouble code (DTC) is indicated by flashing of the ABS warning lamp only in the following cases.
D Normal DTC (12) is indicated if no malfunction DTC is detected in the ABS.
D A history malfunction DTC is indicated by flashing of the lamp if a current malfunction DTC is not detected at
that point although a history malfunction DTC is stored in memory.
INSPECTION
STEP
1 Is diag. switch terminal (1) of DIAG-2 connector (2) con-
nected to ground terminal (3) of DIAG-1 connector (4) via
service wire (5)? (See Fig. 1)
2 1) Ignition switch ON.
2) Measure voltage between diag. switch terminal and
ground.
Is it 10 – 14 V?
3 1) Ignition switch ON.
2) Does flashing of ABS warning lamp indicate
DTC (DTC 12 or history DTC)?
Fig. 1
ACTION YES
Go to step 3. Go to step 2.
Substitute a "PPL" wire circuit
known-good ABS shorted to ground.
hydraulic unit / con-
trol module assem-
bly and recheck.
Go to step 7 of Substitute a
ABS diagnostic known-good ABS
flow table in this hydraulic unit / con-
section. trol module assem-
bly and recheck.
NO