Checking Program - Electrical Circuit QWS
| Test | Test Equipment | Test | Notes | Nominal | ||
|---|---|---|---|---|---|---|
| Step | Multimeter | |||||
| MKM - 587 - A | of | between | Value | |||
| 03 | Voltmeter range 20V, DC | Ambient temperature switch S186 (S143 for MY'94) | S144, ter. 2 (ter. 6 for Frontera) (ter. 4 for Monterey as of MY'96) | Ground | · Bridge coolant temperature switch wiring harness plug |
· Disconnect wiring harness plug from QWS switch S144
| · Ignition "ON" | ||
|---|---|---|
| · Switch opens when the ambient temperature rises above 8 °C | 0 V | |
| · Switch closes when the ambient temperature drops below 15 °C |
· Measurement at wiring harness plug
Note:
| A detailed check of the function of the ambient temperature switch S186 (S143 for MY'94) is given in section 4.3 | > 11.5 V | |
|---|---|---|
| Troubleshooting: | Nominal Value: | Cause of Fault: |
| · Ambient temperature switch S186 (S143 for MY'94) defective |
or
· Line interrupted
from: Ambient temperature switch S186 (S143 for MY'94), wiring harness plug ter. 1
| to: QWS switch S144, wiring harness plug ter. 2 (ter. 6 for Frontera) (ter 4 for Monterey as of MY'96) |