Fuel Injection & Ignition Systems
Fuel injection and ignition systems each feature a self-diagnostic function for fault tracing. A common diagnostic unit for retrieving codes is located in engine compartment, behind left strut assembly. Diagnostic unit is equipped with an LED indicator, activation button and function selector cable. See Fig 1 .
Diagnostic unit output socket No. 2 is used for fuel injection. Socket No. 6 is used for ignition system. Once selector cable has been inserted in correct slot, depressing button once, twice or 3 times selects from one of 3 control (fault tracing) functions. Faults stored in ECU memory are read by observing LED flashes.
Diagnostic system for fuel injection ECU stores 17 fault codes, ignition ECU stores 9 fault codes. All fault codes contain 3 digits (example: 4-1-3). Since all codes have 3 digits, each code requires 3 series of flashes. A 3-second interval separates each series of flashes.