Driver Information Module (DIM) Signal Description
All the values given below are measured between the respective connection in column 1 and connection 14 (signal ground) if not otherwise specified.
Note. It is important that the test box is connected and the ground points checked before testing begins.
| U= | DC voltage (V) | F = | Frequency in Hertz (Hz) |
|---|---|---|---|
| Ubat = | Battery voltage (V) | T = | Period time in milliseconds (ms) |
| Ulow = | Voltage close to 0 V |
| Connect the test box | Connect | Signal type | Ignition on | Idle | Other |
|---|---|---|---|---|---|
| 43 | 1 | Power supply Ext X | U=Ubat | ||
| 44 | 2 | Communication wire control units (CANH) | U=2.5-3.5 V | ||
| 45 | 3 | Communication wire control units (CANL) | U=1.5-2.5 V | ||
| 46 | 4 | Background lamp signal | Lamp off: U=Ubat Lamp on: U=Ulow | ||
| 47 | 5 | Brake fluid level signal (+) | Lamp off: U=Ubat Lamp on: U=Ulow | ||
| 48 | 6 | Parking brake signal (+) | Lamp off: U=Ubat Lamp on: U=Ulow | ||
| 49 | 7 | ||||
| 50 | 8 | Communication wire control units (CANH) | U=2.5-3.5 V | ||
| 51 | 9 | Communication wire control units (CANL) | U=1.5-2.5 V | ||
| 52 | 10 | ||||
| 53 | 11 | ||||
| 54 | 12 | ||||
| 55 | 13 | ||||
| 56 | 14 | Signal ground | U=Ulow | ||