Manufacturer Code Charts: 2268

[1] Error on transmitting a LIN message: Error on transmitting a LIN message

Test 1: LIN bus error:

1. LIN bus error:
Test voltage supply (circuit 30) of component N14/3 (Glow time output stage).
Figure legend

- N14/3 (Glow time output stage)
- N14/3x1Power supplyN14/3 (Glow time output stage)
- N14/3x2Power supplyR9 (Glow plugs)/LIN bus/Ground
Test sequence

- Switch off ignition.
- Disconnect connector N14/3x1 at component N14/3 (Glow time output stage).
- Measure direct voltage with multimeter between ground and socket (N14/3x1)
Specified value:

- Voltage[11...14] V
Question

- Is the measurement value OK?













YES
Test voltage supply (circuit 30) of component G2 (generator).
Test sequence

- Check voltage supply lines of component G2 (generator) as per wiring diagram.
Question

- Was the test o.k.?


YES
Check LIN bus.
Special tools

- Socket box 129 589 00 21 00
- Test cable 266 589 01 63 00
- Measuring system Adapter cable PAL 029
Test sequence

- Switch off ignition.
- Connect 126-pole socket box at engine wiring harness.
- Connect STAR DIAGNOSIS with special tool.
- Observe oscilloscope pattern between ground and socket (M.88) 88Yellow socketA4 of the 126-pole socket box tester.
- Switch on ignition.
Specified value

- Compare oscilloscope pattern with specified characteristics.
Communication with ECU required







NO
The test was not okay.Possible cause and remedy

- Repair or replace wiring and electrical connections if necessary.
- Erase fault memory.
End of test

NO
The measurement value is not OK.Possible cause and remedy

- Check line between control unit N14/3 (Glow time output stage) and component G2 (generator) and connections and plug connectors for damage, proper connection, loose contact and corrosion, and repair or replace if necessary.
- Erase fault memory.
End of test