Diagnostic Formats

QUICK TEST and PINPOINT TESTS are diagnostic formats used to test and service diesel EEC-IV system. QUICK TEST  allows technician to identify problems and retrieve Diagnostic Trouble Codes (DTCs). PINPOINT TESTS check circuits, sensors and actuators.

Before starting any PINPOINT TEST, perform QUICK TEST  to find appropriate pinpoint test to perform. If vehicle passes QUICK TEST and no driveability symptoms or intermittent faults exist, EEC-IV system is functioning properly at this time.