ECWW, Checking Program
| Test | Test Equipment | Check | Notes | Nominal | |
|---|---|---|---|---|---|
| Step | Multimeter | Value | |||
| MKM-587-A | of | between | |||
| 18 | Ohmmeter, range 2 kW | Central closing, driver's door | K37/ Ter. 20 | Ground | · Disconnect central locking control unit wiring harness plug K37 |
· Disconnect sun roof motor wiring harness plug M61
· Disconnect body/co-driver's door wiring harness plug X12
· Disconnect body/rear left door wiring harness plug X13
· Disconnect body/rear right door wiring harness plug X14
· Remove fuse F1
| 560 - | ||
|---|---|---|
| 600 W | ||
| · Measurement in wiring harness plug K37 |
· After completing measurements, insert fuse again
| Possible Faults: |
(If nominal value is not attained)
· Interruption/short circuit in driver's door wiring harness between wiring harness plug X11/Ter. 21 and wiring harness plug M47/Ter. 6.
· Interruption/short circuit in body wiring harness between wiring harness plug X11/Ter. 21 and wiring harness plug K37/Ter. 20.
· Wiring harness plug X11 detached.
· Interruption in driver's door wiring harness between body ground/driver's door wiring harness plug X11/Ter. 29.
· Ground connection corroded.
If nominal values are attained:
· Central locking control unit K37 defective
· Sun roof motor M61 (drive unit) defective.