| Test | Tester | Check | Notes | Nominal | ||
|---|---|---|---|---|---|---|
| Step | Multimeter MKM-587-A | of | between | Value | ||
| 17 | Voltmeter range 20 V, DC | Voltage supply, coolant temperature switch S29 | ||||
| Wiring harness plug of S29 (BRWS/ brown- white) | ||||||
| Ground | · Ignition ON | |||||
| · Disconnect wiring harness plug from switch S29 *) | » 11.5 V | |||||
| Ohmmeter range 200 W | Wiring harness plug of S29 (BR/brown) | Ground | · Ignition OFF |
· Disconnect wiring harness plug from switch S29 *)
| » 0 W | ||
|---|---|---|
| Passage check, coolant temperature switch S29 | ||
| S29/Ter. 1 | S29/Ter. 2 | · Ignition OFF |
· Disconnect wiring harness plug from switch S29 *)
· Engine cold
| ¥ W |
|---|
| Possible cause of fault, trouble-shooting |
1. Fuse F17/10A defective.
2. Lead interruption between wiring harness plug of switch S29 (BRWS/brown-white) and radiator fan relay K51/Ter. 85 (6).
3. Lead interruption between radiator fan relay K51/Ter. 86 (2) and X6 (61/pin).
4. Lead interruption between X6 (61/bushing) and output fuse F17/10A.
5. Lead interruption between coolant temperature switch S 29 (BR/brown) and grounding point 2.
6. Radiator fan relay K51 defective - see test step 10.
7. Contact, coolant temperature switch S29 defective.
*) For this, remove front panelling
( ) Terminal in wiring harness plug