Fault diagnosis
K12 DISPLAY DOES NOT SIGNAL ICE DANGER WITH LOW OUTSIDE TEMPERATURE
Engines: 2.0 16V, 2.0 JTD 8V, 2.3 JTD 16V, 2.8 JTD 8V
The normal messages do not appear on the tachograph display.
Engines: 2.0 16V, 2.0 JTD 8V, 2.3 JTD 16V, 2.8 JTD 8V
| STEP | OPERATIONS TO BE CARRIED OUT | TEST RESULTS | ||
|---|---|---|---|---|
| 1 | TACHOGRAPH POWER SUPPLY CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
| Check continuity between tachograph control unit connector and battery positive [Wiring Diagram E4025] See E4025 TACHOGRAPH | Move on to Step | 1. Lack of continuity between connector and battery positive | 1. Eliminate short circuits and then change fuse [Wiring Diagram E4025] See E4025 TACHOGRAPH | |
| 2.Control unit supply wiring fault | 2. Repair or replace connector/cable [Wiring Diagram E4025] See E4025 TACHOGRAPH | |||
| 2 | TACHOGRAPH POWER SUPPLY CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
| Check continuity between tachograph control unit and vehicle earth [Wiring Diagram E4025] See E4025 TACHOGRAPH | Move on to Step | Lack of continuity between tachograph control unit and vehicle earth. | Repair and/or replace connector/cable [Wiring Diagram E4025] See E4025 TACHOGRAPH | |
| 3 | CHECK ON CORRECT OPERATION | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
| Check that the fault is no longer present | Tachograph control unit fault persists | Replace the tachograph Op. 5560C22 TACHOGRAPH - R.R. | ||