Reading Diagnosis Trouble Codes (U.S.A Only)

The ECM is capable of storing diagnostic trouble codes. For U.S. vehicles, these diagnostic trouble codes may be read by switching the Ignition Switch (X134) to position II and observing the Fuel Injection Fault Display Unit (Z133). If no codes are present, the display will appear blank. A lit service engine warning light indicates that a fault is present. For non-U.S. vehicles (not equipped with a Fuel Injection Fault Display), the Lucas diagnostic equipment, part number 60600965, is recommended for reading diagnostic trouble codes.