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

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DTC C1057: Power Supply Voltage Too High / Too Low

Wiring Diagram
WHT
2
1
[A]: ESP® control module connector (viewed from terminal side)
1. Battery
DTC Detecting Condition and Trouble Area
DTC Detecting Condition
ESP® control module power supply voltage is too high or
too low.
DTC Troubleshooting
Step
1
Was "Electronic Stability Program Check" performed?
2
Check ESP® hydraulic unit / control module assembly
power and ground circuit
1) Check that ESP® hydraulic unit / control module
assembly power supply circuit and ground circuit is in
good condition referring to "ESP® Hydraulic Unit /
Control Module Assembly Power and Ground Circuit
Check".
Are check results OK?
3
ESP® 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
GRN
GRN/ORN
BLK
2. Main fuse box
3. Ignition switch
Action
Electronic Stability Program:
5
12V
E08-9
E08-23
4. Junction block assembly
5. ESP® hydraulic unit / control module assembly
Trouble Area
• ESP® control module power supply circuit
• ESP® control module
Yes
Go to Step 2.
Go to Step 3.
Substitute a known-
good ESP® hydraulic
unit / control module
assembly and recheck.
4F-43
S7RW0A4604048
[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
I6RW0H460012-01
No
Go to "Electronic
Stability Program
Check".
Repair ESP® hydraulic
unit / control module
assembly power or
ground circuit.
Check charging system
referring to "Generator
Test (Overcharged
Battery Check) in
Section 1J".

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