Checking Program - Electrical Circuit QWS
| Test | Test Equipment | Test | Notes | Nominal | ||
|---|---|---|---|---|---|---|
| Step | Multimeter | |||||
| MKM - 587 - A | of | between | Value | |||
| 07 | Voltmeter range 20V, DC | Voltage supply VSV - FICD Y57 | Y57, ter. 1 | Y57, ter. 2 | · Disconnect wiring harness plug from VSV - FICD Y57 |
· Ignition "ON"
| · QWS switch "ON" | > 11.5 V | |
|---|---|---|
| · QWS switch "OFF" |
· Measurements at wiring harness plug
| · Reconnect wiring harness plug after measurements | 0 V | |
|---|---|---|
| Troubleshooting: | Nominal Value: | Cause of Fault: |
· Remove diode V36 (V24 for Monterey) from wiring harness plug.
· Measure voltage with multimeter
from: Diode V36 (V24 for Monterey), wiring harness plug ter. 1 (ter. B for Frontera)
| to: Ground | ||
|---|---|---|
| · QWS switch "ON" | > 11.5 V | |
| · QWS switch "OFF" | 0 V | · Line interrupted |
from: Diode V36 (V24 for Monterey), wiring harness plug ter. 1 (ter. B for Frontera)
to: QWS switch S144, wiring harness plug ter. 5 (Campo / Brava, all except 4JA1)
or
to: Half acceleration switch S163, wiring harness plug ter. 2 (Campo / Brava 4JA1)
or
to: Relay QWS K129 relay socket ter. 3 (Monterey)
or
to: Relay QWS K129 relay socket ter. 8 (Frontera)
· Measure resistance with multimeter
from: VSV FICD Y57, wiring harness plug ter. 2
| to: Ground | approx. 0 W | · Line interrupted |
from: VSV FICD Y57, wiring harness plug ter. 2
to: Ground
| If nominal values are attained: | · Line interrupted or short circuit to voltage |
from: Diode V36 (V24 for Monterey), wiring harness plug ter. 2 (ter. A for Frontera)
to: VSV FICD Y57, wiring harness plug ter. 1
or
· Diode V36 (V24 for Monterey) defective
or
| · Air conditioning is activated |