Suzuki GRAND VITARA JB416, Service Manual

Page: 248 / 474

4E-25 ABS:
DTC Detecting Condition
The ABS (ESP
®
) control module monitors the power source voltage at terminal “E03-14” (or “E53-1”). When the
power source voltage becomes extremely high or low while vehicle is running at more than 20 km/h (13 MPH), this
DTC will be set. As soon as the power source voltage becomes normal, the ABS warning lamp will be turned off and
the ABS (ESP
®
) control module will return to normal operation, but the set DTC will be remain.
DTC Troubleshooting
Step Action Yes No
1 Was “ABS Check” performed? Go to Step 2. Go to “ABS Check: ”.
2 1) Disconnect ABS (ESP
®
) hydraulic unit / control module
connector with ignition switch turned OFF.
2) Check for proper connection to ABS (ESP
®
) control
module connector at terminals “E03-14”, “E03-13” and
“E03-26” (or “E53-1”, “E53-16” and “E53-47”).
3) If OK, then turn ignition switch to ON position and
measure voltage between terminals “E03-14” and “E03-
13”, “E03-26” (or “E53-1” and “E53-16”, “E53-47”).
Are voltage 9.7
±
0.3 V or more?
Go to Step 5. Go to Step 3.
3 1) Turn ignition switch to OFF position.
2) Check for proper connection to ABS (ESP
®
) control
module connector at terminals “E03-13” and “E03-26”
(or “E53-16” and “E53-47”).
3) If OK then turn ignition switch to ON and measure
resistance between each terminal of “E03-13”, “E03-26”
(or “E53-16”, “E53-47”) and vehicle body ground.
Is resistance less than 2
Ω
?
Go to Step 4. “BLK” wire circuit in
open or high resistance.
4 1) Measure voltage between positive battery terminal and
vehicle body ground with engine running.
Is voltage 9.7
±
0.3 V or more?
Imperfect short between
“WHT/RED” wire circuit
and body ground. Check charging system
referring to “Generator
Test (Undercharged
Battery Check): in
Section 1J in related
manual”.
5 1) Measure voltage between terminals “E03-14” and “E03-
13”, “E03-26” (or “E53-1” and “E53-16”, “E53-47”) with
engine running.
Are voltage 18
±
1.0 V or less?
Poor connection of
“E03-14”, “E03-13” and/
or “E03-26” (or “E53-1”,
“E53-16” and/or “E53-
47”) terminals. If the
terminals are in good
condition, substitute a
known-good ABS
(ESP
®
) hydraulic unit /
control module and
recheck.
Check charging system
referring to “Generator
Test (Overcharged
Battery Check): in
Section 1J in related
manual”.