Dtc C1057: Power Supply Voltage Too High / Too Low - Suzuki SX4 Service Manual

4E-27 ABS:

DTC C1057: Power Supply Voltage Too High / Too Low

Wiring Diagram
2
1
[A]: ABS control module connector (viewed from terminal side)
1. Battery
DTC Detecting Condition and Trouble Area
DTC Detecting Condition
ABS control module power supply voltage is too high or
too low.
DTC Troubleshooting
Step
1 Was "ABS Check" performed?
2 Check ABS hydraulic unit / control module assembly
power and ground circuit
1) Check that ABS hydraulic unit / control module assembly
power supply circuit and ground circuit is in good
condition referring to "ABS Hydraulic Unit / Control
Module Assembly Power and Ground Circuit Check".
Are check results OK?
3 ABS hydraulic unit / control module power source
voltage check
1) Measure battery voltage with engine running at 3000
rpm.
Is voltage 15 V or less?
3
4
WHT GRN
Action
5
12V
GRN/ORN E08-9
BLK E08-23
2. Main fuse box 4. Junction block assembly
3. Ignition switch 5. ABS hydraulic unit control module assembly
• ABS control module power supply circuit
• ABS control module
Go to Step 2.
Go to Step 3
Substitute a known-
good ABS hydraulic unit
/ control module
assembly and recheck.
[A] E08
1
12
2
13
3
14
4
15
5
16
6
17
7
18
8
19
9
20
10
21
11
22
23
24
25
26
Trouble Area
Yes
Go to "ABS Check".
Repair ABS hydraulic
unit / control module
assembly power or
ground circuit.
Check charging system
referring to "Generator
Test (Undercharged
Battery Check) in
Section 1J".
S7RW0A4504018
I7RW01450009-03
No