Electronic control fuel injection system (Common rail type) 1E-9 Description of DTC diagnosis section The following numbers correspond to those shown in the illustration. They describe each item. 1. DTC: This indicates trouble code. 2. Flash code Trouble code indicated by lamp flashing 3. Description of trouble symptom 4. Conditions on system that establish the codes 5. Circuit diagram Circuit diagram related to trouble code 6. Description of circuit System circuit principle related to trouble 7. Main trouble symptom Expected state of engine caused by system trouble 8. Preconditions when DTC is set Judgment is not performed unless this condition is established. 9.
DTC set condition Condition for fault judgment when preconditions are met 10. Action taken when DTC is set Behavior of diagnosis lamp, monitor display on the machine and engine control when trouble code is set. 11. Back-up mode A system operation mode that uses back-up data stored in the ECM memory in disregard of abnormal signal from sensor, when making fault judgment. 12. Recovery from failure Description of recovery from failure to normal state 13. Diagnostic aid Expected trouble causes are listed. They are important information to perform diagnosis. Be sure to read before trouble diagnosis. 14. Breaker box inspection procedure There is an appropriate table in diagnostic chart.
It describes detailed diagnostic procedure.