| Test | Tester | Check | Notes | Nominal | ||
|---|---|---|---|---|---|---|
| Step | Multimeter MKM-587-A | of | between | Value | ||
| 14 | Voltmeter range | Voltage supply, | K26/Ter. 86 (3) | Ground | · Disconnect relay K26*) | |
| · Switch S101 ON | » 11.5 V | |||||
| 20 V, DC | radiator fan relay and AC | K26/Ter. 30 (2) | Ground | · Ignition ON | » 11.5 V | |
| fan motor, 1st speed, K26 | ||||||
| K26/Ter. A (4) | Ground | » 11.5 V | ||||
| Ohmmeter range 200 W | K26/Ter. 87 (8) | Wiring harness plug M10 (1) | · Disconnect wiring harness plug from AC fan motor M10. | » 0 W | ||
| K26/Ter. B (5) | X44 (1/bushing) | · Wiring harness plug X44 separated **) | » 0 W | |||
| K26/Ter. 85 (6) | K51/Ter. 87 (8) | · Ignition OFF | ||||
| · Disconnect relay K26**) | » 0 W | |||||
| X44 (1/pin) | Ground | |||||
| » 0 W | ||||||
| Possible cause of fault, trouble-shooting |
1. MAXI fuse F15/30A defective.
2. Lead interruption between radiator fan relay and AC fan motor, 1st speed, K26/Ter. 86 (3) and X6 (54/bushing).
3. Lead interruption between X6 (54/pin) and pressure switch ASSY. S20 (2).
4. Pressure switch ASSY. S20 defective - see test step 06.
5. Lead interruption between X6 (57/bushing) and AC switch S101 (A).
6. AC switch S101 defective - see test step 08.
7. Lead interruption between AC switch S101 (C) and AC relay K6/Ter. 87 (8).
8. AC relay K6 defective - see test step 07.
9. Lead interruption between AC relay K6/Ter. 30 (4) and output MAXI fuse F15/30A.
10. Lead interruption between radiator fan relay and AC fan motor, 1st speed, K26/Ter. 30 (2) and AC relay K6/Ter. 87 (8).
11. Lead interruption between radiator fan relay and AC fan motor, 1st speed, K26/Ter. A (4) and X44 (2/bushing).
12. Lead interruption between X44 (2/pin) and auxiliary fan motor M11 (BRWS/brown-white).
13. Lead interruption between radiator fan relay and AC fan motor, 1st speed, K26/Ter. 85 (6) and grounding point 2.
14. Lead interruption between radiator fan relay and AC fan motor, 1st speed, K26/Ter. 87 (8) and AC fan motor M10 (1).
15. Lead interruption between radiator fan relay and AC fan motor, 1st speed, K26/Ter. B (5) and X44 (1/bushing).
16. Lead interruption between X44 (1/pin) and radiator fan relay K52/Ter. 30 (2).
17. Radiator fan relay K52 defective - see test step 13.
*) For this, remove the glove compartment and detach the relay frame beside the glove compartment.
**) For this remove the lower left A pillar inner panelling.
( ) Terminal in wiring harness plug