C1155
DTC C1155: P/S Control Module Internal Failure
Wiring Diagram
Refer to C1153 DTC C1153: P/S Control Module Power Supply Circuit:Electric Type.
DTC Detecting Condition and Trouble Area
DTC Troubleshooting
1.
Was "EPS System Check" performed?
YES -
Go to Step 2.
NO -
Go to EPS System Check EPS System Check:Electric Type.
2. P/S control module power supply and ground circuit check
Check power supply circuit and ground circuit for P/S control module referring to P/S Control Module Power Supply and Ground Circuit Check P/S Control Module Power Supply and Ground Circuit Check:Electric Type.
Is check result in good condition?
YES -
Go to Step 3.
NO -
Repair or replace defective circuit.
3. Battery voltage check
Check voltage between positive (+) battery terminal and vehicle body ground with engine speed at 3000 rpm.
Is voltage 15.5 V or less?
YES -
Replace P/S control module.
NO -
Check charging system referring to Testing and Inspection Generator Test.