Suzuki Grand Vitara 2011 Manual page 1152

4E-28 ABS:
DTC Detecting Condition
ABS (ESP®) control module monitors the voltage at the terminal of solenoid circuit constantly with ignition switch
turned ON. Also, immediately after ignition switch is turned ON, perform initial check as follows.
Switch solenoid valve power supply driver (transistor) in the order of OFF → ON and check if voltage changes to Low
→ High. If anything faulty is found in the initial check and when the voltage is low with ignition switch turned ON, this
DTC will be set.
DTC Troubleshooting
Step
1 Was "ABS Check" performed?
2 Check battery voltage.
Is it about 11 V or higher?
3 Check main fuse for ABS solenoid and its terminal.
Is it in good condition?
4 1) Turn ignition switch to OFF position.
2) Disconnect ABS (ESP®) control module connector.
3) Check for proper connection to ABS (ESP®) control
module at terminal "E03-14" (or "E53-1").
4) If OK, then measure voltage between connector terminal
"E03-14" (or "E53-1") and body ground.
Is it 10 – 14 V?
Action Yes
Go to Step 2.
Go to Step 3.
Go to Step 4.
Substitute a known-
good ABS (ESP®)
hydraulic unit / control
module assembly and
recheck.
No
Go to "ABS Check".
Check charging system
referring to "Battery
Inspection: For Petrol
Engine Model in Section
1J", "Generator Test
(Undercharged Battery
Check): For Petrol
Engine Model in Section
1J", "Battery Inspection:
For Diesel Engine
Model in Section 1J"
and "Generator Test
(Undercharged Battery
Check): For Diesel
Engine Model in Section
1J".
Replace fuse and check
for short circuit to
ground.
"WHT/BLU" circuit
imperfect short to
ground.