Check At Ecu Terminal: Front-Ecu
NOTE:
Terminal voltages cannot be measured as the front-ECU is installed directly on the relay box. Therefore, this information is only for reference.
FRONT-ECU TERMINAL INSPECTION REFERENCE
| TERMINAL NO. | INSPECTION ITEM | INSPECTION CONDITION | NORMAL VALUE |
|---|---|---|---|
| 1 - 3 | - | - | - |
| 4 | Output to taillights | When taillights are on | Battery positive voltage |
| 5 | Battery power supply (for ECU) | Always | Battery positive voltage |
| 6 | Output to headlight (low-beam) | When headlights (low-beam) are on | Battery positive voltage |
| 7 | Battery power supply (for taillight) | Always | Battery positive voltage |
| 8, 9 | Battery power supply (for headlight) | Always | Battery positive voltage |
| 10 | Output to headlight (high-beam) | When headlights (high-beam) are on | Battery positive voltage |
| 11 | Output to front fog light relay | When the front fog lights are on | Battery positive voltage |
| 21 | Ground | Always | 0 V |
| 22 | Power supply to ignition switch (IG2) | Ignition switch: "ON" | Battery positive voltage |
| 23 | - | - | - |
| 24 | Output to windshield wiper (high-speed) | When windshield wiper is on (at high speed) | Battery positive voltage |
| 25 | Output to windshield wiper (low-speed) | When windshield wiper is on (at low speed) | Battery positive voltage |
| 26 | Input of backup signal to windshield wiper | Windshield low-speed wiper switch or windshield high-speed wiper switch: ON | 0 V |
| 27 | Input of backup signal from headlight switch | Headlight switch: ON | 0 V |
| 28 | Power supply to ignition switch (ACC) | Ignition switch: "ACC" | Battery positive voltage |
| 29 | Input of automatic stop signal to windshield wiper | When windshield wiper is on | Battery positive voltage |
| 30 | SWS communication line | Always | 0 - 12 V (pulse signal) |
| 31 | Output to windshield washer | When windshield washer is on | Battery positive voltage |