Suzuki sq-416-420-625 Service Manual page 359

5E1-18 ANTILOCK BRAKE SYSTEM (ABS) (OPTIONAL)
TABLE – C "ABS" WARNING LAMP CIRCUIT CHECK – THE LAMP FLASHES
CONTINUOUSLY WHILE IGNITION SWITCH IS ON
CIRCUIT DESCRIPTION
When the diag. switch terminal is shorted or connected to the ground with the ignition switch ON, the diag. trouble
code (DTC) is indicated by flashing of the "ABS" warning lamp only in 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 connected to ground via
service wire?
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)?
ACTION
-1. "ABS" warning lamp
-2. ABS hydraulic unit /
-3. Diagnosis connector
3-1. Diag. switch terminal
3-2. Diag. ground terminal
YES
Go to step 3.
Substitute a
known-good ABS
hydraulic unit/
control module
assembly and
recheck.
Go to step 7 of ABS
diagnostic flow
table in this
section.
control module assembly
NO
Go to step 2.
"P" wire circuit
shorted to
ground.
Substitute a
known-good ABS
hydraulic unit/
control module
assembly and
recheck.