Checking Program - Electrical Circuit QWS
| Test | Test Equipment | Test | Notes | Nominal | ||
|---|---|---|---|---|---|---|
| Step | Multimeter | |||||
| MKM - 587 - A | of | between | Value | |||
| 02 | Voltmeter range 20V, DC | Coolant temperature switch S160 (S29 for MY'94) | S186 (S143 for MY'94), ter. 2 | Ground | · Disconnect wiring harness plug from ambient temperature switch |
· Bridge charging indicator relay K79, relay socket ter. 1 and 3 (Monterey only)
| · Ignition "ON" | ||
|---|---|---|
| · Switch opens when the coolant temperature rises above 73 °C | 0 V | |
| · Switch closes when the coolant temperature drops below 80 °C |
· Measurements at wiring harness plug
· Reconnect wiring harness plug after measurements
Note:
| A detailed check of the function of the coolant temperature switch S160 (S29 for MY'94) is given in section 4.3 | > 11.5 V | |
|---|---|---|
| Troubleshooting: | Nominal Value: | Cause of Fault: |
| · Coolant temperature switch S160 (S29 for MY'94) defective |
or
· Line interrupted
from: Coolant temperature switch S160 (S29 for MY'94), wiring harness plug ter. 1 (ter. 2 for 4JA1)
| to: Ambient temperature switch S186 (S143 for MY'94), wiring harness plug ter. 2 |