Standard Electrical Circuit Service and Inspection Procedures

Diagnosis By Symptom (1 Of 4):

Diagnosis By Symptom (2 Of 4):

Diagnosis By Symptom (3 Of 4):

Diagnosis By Symptom (4 Of 4):

This section describes trouble diagnosis of Electronic Fuel Injection system parts whose trouble is not indicated by the on-board diagnostic system (self-diagnosis function). When diagnostic trouble code No.12 is indicated by the on-board diagnostic system (self-diagnosis function) and assuredly those engine basic parts as described in "ENGINE DIAGNOSIS" are all in good condition, check following Electronic Fuel injection system parts which may be a possible cause for each symptom of the engine.