ABS

DTC C1057: Power Supply Circuit Failure

Wiring Diagram










DTC Detecting Condition and Trouble Area






DTC Troubleshooting



1.
Was "ABS Check" performed?
YES
Go to Step 2.
NO
Go to ABS Check.

2. Check ABS hydraulic unit / control module assembly power supply and ground circuit

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 Supply and Ground Circuit Check ABS Hydraulic Unit / Control Module Assembly Power Supply and Ground Circuit Check.

Are check results OK?
YES
Go to Step 3
NO
Repair ABS hydraulic unit / control module assembly power supply or ground circuit.

3. ABS hydraulic unit / control module power supply voltage check

Measure battery voltage with engine running at 3000 rpm.

Is voltage 15 V or less?
YES
Substitute a known-good ABS hydraulic unit / control module assembly and recheck.
NO
Check charging system referring to Generator Test.