Checking Program - Electrical Circuit QWS
| Test | Test Equipment | Test | Notes | Nominal | ||
|---|---|---|---|---|---|---|
| Step | Multimeter | |||||
| MKM - 587 - A | of | between | Value | |||
| 04b | Voltmeter range 20V, DC | QWS switch (Campo / Brava 4JA1 only) | S163, ter. 1 | Ground | · Reconnect wiring harness plug to QWS switch S144 |
· Bridge ambient temperature switch wiring harness plug
· Remove wiring harness plug from half acceleration switch S163
| · Ignition "ON" | ||||
|---|---|---|---|---|
| · QWS switch "ON" | > 11.5 V | |||
| · QWS switch "OFF" | ||||
| · Measurements at wiring harness plug | 0 V | |||
| Troubleshooting: | Nominal Value: | Cause of Fault: |
· Ignition "OFF"
· Disconnect wiring harness plug from QWS switch S144
· Measure resistance with multimeter
| from: QWS switch S144, wiring harness plug ter. 5 | ||
|---|---|---|
| to: Half acceleration switch S163, wiring harness plug ter. 1 | approx. 0 W | · Line interrupted or short circuit to voltage |
from: QWS switch S144, wiring harness plug ter. 5
to: Half acceleration switch S163, wiring harness plug ter. 1
| If nominal values are attained: | QWS switch S144 defective |