ABS: 4E-27
DTC Troubleshooting
DTC C1057 (No. 57): Power Source Circuit
S3RH0A4504017
Wiring Diagram
DTC Detecting Condition
The ABS control module monitors the power source voltage at terminal “E15-14”. 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 control module
will return to normal operation, but the set DTC will be remain.
Step Action Yes No
1 Was “ABS Check” performed? Go to Step 2. Go to “ABS Check”.
2 1) Check solenoid operation referring to item “ABS
Hydraulic Unit Operation Check”.
Is it in good condition?
Check terminal “E15-
14” connection. If
connection is OK,
substitute a known-
good ABS hydraulic unit
/ control module
assembly and recheck.
Go to Step 3.
3 1) Turn ignition switch to OFF position.
2) Disconnect ABS hydraulic unit / control module
connector.
3) Check for proper connection to ABS hydraulic unit /
control module connector at terminal “E15-14”.
4) If OK, then measure voltage between terminal “E15-14”
of module connector and “E15-26”.
Is it 10 – 14 V?
Substitute a known-
good ABS hydraulic unit
/ control module
assembly and recheck.
“WHT/BLU” or “BLK”
circuit open.
I3RH0A450019-01
[A]: ABS hydraulic unit / control module connector E15 2. Main fuse box
1. Battery 3. ABS hydraulic unit / control module assembly
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