Subaru IMPREZA 2004 Service Manual page 556

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
CO:DTC P1518 STARTER SWITCH CIRCUIT LOW INPUT
• DTC DETECTING CONDITION:
• Two consecutive driving cycles with fault
• TROUBLE SYMPTOM:
• Failure of engine to start
CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(H4SO)(diag)-47,
OPERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H4SO)(diag)-40, OPERATION,
Inspection Mode.>.
EN(H4SO)(diag)-247
ENGINE (DIAGNOSTICS)