Self-Diagnostic System: Summary

If no service code is present but driveability problem still exists, proceed to the AUTO TRANS OVERHAUL - CD4E article for symptom diagnosis procedures.

NOTE: CIRCUIT/PINPOINT TESTS are diagnostic formats used to test and service EEC-IV system. QUICK TEST allows technician to identify problems and retrieve service codes. CIRCUIT TESTS check engine circuits, sensors and actuators. PINPOINT TESTS check transaxle circuits, sensors and actuators.