Suzuki GRAND VITARA JB416, Service Manual

Page: 238 / 474

4E-15 ABS:
Troubleshooting
Step Action Yes No
1 1) Perform diagnostic trouble code check.
Is there any DTC(s)?
Go to applicable DTC
diag. flow. Go to Step 2.
2 Are main fuses for ABS pump motor and ABS solenoid in
good condition? Go to Step 3. Replace fuse and check
circuit for short to
ground.
3 1) Turn ignition switch to OFF.
2) Disconnect ABS (ESP
®
) control module connector.
3) Check for proper connection to ABS (ESP
®
) control
module connector at terminals “E03-7”, “E03-13” and
“E03-26” (or “E53-16”, “E53-35” and “E53-47”).
4) If OK then turn ignition switch to ON position and
measure voltage between terminal “E03-7” (or “E53-35”)
and vehicle body ground.
Is it 10 – 14 V?
Go to Step 4. “GRN/ORN” circuit
open.
4 1) Turn ignition switch to OFF position.
2) Check for proper connection to ABS (ESP
®
) control
module connector at terminals “E03-1” and “E03-14” (or
“E53-1” and “E53-32”).
3) If OK then turn ignition switch to ON position and
measure voltage between each terminal of “E03-1”,
“E03-14” (or “E53-1”, “E53-32”) and vehicle body
ground.
Are they 10 – 14 V?
Go to Step 5. “WHT/RED” and/or
“WHT/BLU” circuit
open.
5 1) Turn ignition switch to OFF and measure resistance
between each terminal of “E03-13”, “E03-26” (or “E-53-
1”, “E53-32”) and vehicle body ground.
Is resistance less than 2
Ω
?
Go to Step 6. Ground circuit for ABS
(ESP
®
) hydraulic unit /
control module open or
high resistance.
6 Check CAN communication circuit between combination
meter and ABS (ESP
®
) control module referring to “DTC
U1073: Control Module Communication Bus Off: ”.
Is CAN communication circuit in good condition?
Substitute a known-
good combination meter
and recheck. If ABS
warning lamp remains
ON, substitute a known-
good ABS (ESP
®
)
hydraulic unit / control
module assembly and
recheck.
Repair or replace.