1 | Fault code | Cylinder 1 (Y62y1) Cylinder 2 (Y62y2) Cylinder 3 (Y62y3) Cylinder 4 (Y62y4) Cylinder 5 (Y62y5) Cylinder 6 (Y62y6) |
2 | Error storage Activation of engine diagnostics malfunction indicator lamp (EURO3/4) or CHECK ENGINE (MIL) | after expiry of test duration and fault after two successive driving cycles with faults |
3 | Frequency of test | Continuously |
4 | Checked signal or status | Current/voltage check at each fuel injector |
5 | Fault setting conditions Limit values Short circuit to ground Short circuit to + 12 V Open circuit 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 actuation of each fuel injector is inspected for signs of open and short circuits (to ground or battery voltage). When the output stage is in locked status a short circuit to ground and an open circuit can be detected, whereas for a conducting output stage a short circuit is recognized to the battery voltage. If a malfunction occurs the output stage is immediately deactivated. |
8 | | If there is a short circuit to ground the corresponding fuel injector is always open. |