Checking Program - Electrical Circuit QWS
| Test | Test Equipment | Test | Notes | Nominal | ||
|---|---|---|---|---|---|---|
| Step | Multimeter | |||||
| MKM - 587 - A | of | between | Value | |||
| 04c | Voltmeter range 20V, DC | QWS switch (Monterey only) | K129 ter. 4 | Ground | · Reconnect wiring harness plug to QWS switch S144 |
· Bridge coolant temperature switch wiring harness plug
· Bridge ambient temperature switch wiring harness plug
| · Remove relay QWS K129 from relay socket | |||||
|---|---|---|---|---|---|
| · Ignition "ON" | > 11.5 V | ||||
| · Ignition "OFF" | |||||
| · Measurements at relay socket | 0 V | ||||
| K129, ter. 1 | Ground | · Ignition "ON" | |||
| · QWS switch "ON" | > 11.5 V | ||||
| · QWS switch "OFF" |
· Measurements at relay socket
| · Reinstall relay QWS K129 after measurements | 0 V | |
|---|---|---|
| Troubleshooting: | Nominal Value: | Cause of Fault: |
· Measure voltage with multimeter
from: Relay QWS K129, relay socket ter. 4
| to: Ground | > 11.5 V | · Line interrupted |
from: Fuse F3 (Fuse C20 for Monterey as of MY'96)
to: Relay QWS K129, relay socket ter. 4
· Measure voltage with multimeter
from: Relay QWS K129, relay socket ter. 1
| to: Ground |
· QWS switch "ON"
| · QWS switch "OFF" | > 11.5 V0 V | · Line interrupted or short circuit to ground |
from: QWS switch S144, wiring harness plug ter. 5
to: Relay QWS K129, relay socket ter. 1
or
| · QWS switch S144 defective |