Manufacturer Code Charts: 2267

[1] LIN message from component 'N14/3 (Glow time output stage)' faulty: Faulty message or timeout

Test 1: Check component N14/3 (Glow time output stage).

1. Check component N14/3 (Glow time output stage).
Check terminal 30.
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
Check terminal 87.
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 N14/3x2 at component N14/3 (Glow time output stage).
- Switch on ignition.
- Measure direct voltage with multimeter between ground and socket (N14/3x2) 5
Specified value

- Voltage[11...14] V
Question

- Is the measurement value OK?













YES
Check LIN bus.
Special tools

- Socket box 129 589 00 21 00
- Test cable 266 589 01 63 00
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.
- Unplug connector M at control unit N3/9 (CDI control unit).
- Connect socket box.
- Disconnect connector N14/3x2 at component N14/3 (Glow time output stage).
- Measure resistance with multimeter between socket (M.88) 88 of the 126-pole socket box tester and socket (N14/3x2) 12
Specified value

- Resistor< 1ohms
Question

- Is the measurement value OK?













YES
Test ground connection to component N14/3 (Glow time output stage).
Test sequence

- Check contacts of wiring harness at component N14/3 (Glow time output stage).Check bolt, cable lug and contact area of threaded connection 'Ground' for corrosion, and clean or repair if necessary.
Question

- Was the test o.k.?


YES
The test was okay.Possible cause and remedy

- Component N14/3 (Glow time output stage) is defective.
End of test

NO
The test was not okay.Possible cause and remedy

- Check bolt, cable lug and contact area of threaded connection 'N3/9 (CDI control unit)' for corrosion, and clean or repair if necessary.
- Retighten threaded connection of component N14/3 (Glow time output stage) to specified tightening torque.( 8.5 Nm )
End of test

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

- Check line and connectors between control unit N3/9 (CDI control unit) (pin M.88) and component N14/3 (Glow time output stage) (pin 12) for damage, correct fitting, loose contacts and corrosion, and repair as required.
End of test

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

- Check fuse N10/1f44 (Fuse 44).
- Test wiring of voltage supply between component N14/3 (Glow time output stage) and component N10/1f44 (Fuse 44).
End of test

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

- Check wire between components N14/3 (Glow time output stage) and G2 (generator) for good contact, loose contact and discontinuity.
End of test