1 | Fault code | Cylinder 1 (Y62y1) Cylinder 2 (Y62y2) Cylinder 3 (Y62y3) Cylinder 4 (Y62y4) Cylinder 5 (Y62y5) Cylinder 6 (Y62y6) Cylinder 7 (Y62y7) Cylinder 8 (Y62y8) |
2 | Fault storage Activation of malfunction indicator lamp for engine diagnosis (EURO3/4) or CHECK ENGINE (MIL) | after the end of the test period and faults after two successive driving cycles with faults |
3 | Frequency of the test | continuous |
4 | Checked signal or status | Current/voltage test on respective fuel injector |
5 | Fault setting conditions Limits Short circuit to ground Short circuit to +12 V Line interruption Test duration |
Voltage < 2.5 V Current > 4.2 A no voltage at fuel injector approx. 4 - 8 V at unloaded output of ME-SFI control module approx. 1 s |
6 | Test prerequisites | battery voltage between 8 - 17.1 V |
7 | | The activation of each fuel injector is tested for line interruption and short circuit (to ground or battery voltage). Short circuit to ground and line interruption is determined with a blocked output stage, whereas short circuit to battery voltage is determined with a conducting output stage. In the event of faults, the output stage is immediately no longer activated. |
8 | | In the event of a short circuit to ground, the corresponding fuel injector is continuously open. |