| Test | Tester | Check | Notes | Nominal | |
|---|---|---|---|---|---|
| Step | Multimeter MKM-587-A | of | between | Value | |
| 02 | Auxiliary fan motor M11 | · Check function of motor M11: |
- Disconnect wiring harness plug from motor M11
- Connect motor M11 externally to battery voltage and ground
| Possible cause of fault, trouble-shooting |
1. Actuation and function of auxiliary fan motor M11, see function table 4.6.
This table is used to simulate actuation of auxiliary fan motor M11. For this, remove the relevant wiring harness plug from each switch and replace the break contact or make contact by wire bridges.
2. Fuse F20/30 A defective.
3. MAXI fuse F15/30 A defective.
4. Radiator fan relay and AC fan motor, 1st speed, K26 defective.
5. Radiator fan relay K51 defective.
6. Radiator fan relay K52 defective.
7. AC relay K6 defective - see test step 07.
8. Radiator fan motor M4 defective - see test step 01.
9. Lead interruption between X6 (76/bushing) and output fuse F20/30 A.
10. Lead interruption between wiring harness plug for auxiliary fan motor M11 (SW/black) and X6 (76/pin).
11. Lead interruption between X44 (2/pin) and wiring harness plug for motor M11 (BRWS/brown-white).
12. Lead interruption between radiator fan relay and AC fan motor, 1st speed, K26/Ter. A (4) and X44 (2/bushing).
13. Lead interruption between X44 (1/pin) and radiator fan relay K52/Ter. 30 (2).
14. Lead interruption between wiring harness plug for radiator fan motor M4 (RTWS/red-white) and radiator fan relay K52/Ter. 87A (5).
15. Lead interruption between grounding point 2 and wiring harness plug for radiator fan motor M4 (BR/brown).
( ) Terminal in wiring harness plug