| Test | Tester | Check | Notes | Nominal | ||
|---|---|---|---|---|---|---|
| Step | Multimeter MKM-587-A | of | between | Value | ||
| 09 | Voltmeter range | Voltage supply, | K7/Ter. 86 (2) | Ground | · Ignition ON | |
| · Switch S24 in position 4 | » 11.5 V | |||||
| 20 V, DC | AC fan motor relay, 4th | K7/Ter. 30 (4) | Ground | · Relay K7 installed | » 11.5 V | |
| speed, K7* | ||||||
| K7/Ter. 87 (8) | Ground | » 11.5 V | ||||
| K7/Ter. 87 (8) | Ground | · Ignition ON |
· Switch S24 in position 3
· Relay K7 installed
| » 7 V | ||||
|---|---|---|---|---|
| Ohmmeter range 200 W | ||||
| K7/Ter. 85 (6) | Ground | · Ignition OFF | ||
| · Relay K7 removed | » 0 W | |||
| Possible cause of fault, trouble-shooting |
1. Lead interruption between AC fan motor relay, 4th speed, K7/Ter. 30 (4) and AC relay K6/Ter. 87 (8).
2. Lead interruption between AC fan motor relay, 4th speed, K7/Ter. 86 (2) and AC fan motor switch S24/Ter. 4 (3).
3. Lead interruption between AC fan motor relay, 4th speed, K7/Ter. 85 (6) and grounding point 2.
4. AC fan motor switch S24 defective - see test step 18.
5. Lead interruption between AC fan motor M10 (3) and AC fan motor relay, 4th speed, K7/Ter. 87 (8).
*) For this, remove glove compartment and detach relay frame beside glove compartment.
( ) Terminal in wiring harness plug