Reference Modification no.
- 0 -
Page
122
Date
1997 02 01
Main
914 F
01477
12.4.16)Flashing of the orange caution lamp
â—† NOTE: The non-lighting orange caution lamp indicates that the
TCU is ready for operation.
If this lamp is flashing it signals a malfunction of the TCU or its periphery.
At trouble, for instance if the wiring is the TCU switches over to the pre-
programmed default values to warrant engine operation.
â– ATTENTION: Whilst the default values are effective, supervision of the
respective channel, e.g. overspeeding is not possible. Su-
pervision is set inactive.
Inspect engine especially turbo charger and air intake system.
➪ check wiring. See chapter 12.3.16)
If no physical damage can be detected check the TCU. Consult chapter 13.6).
â– ATTENTION: If the limits of operation are exceeded or fall short of, conduct
additional relevant checks.
â–² WARNING: Do not start the engine before trouble is found and rectified.
12.4.17) Failure of power supply to the TCU
Inspect engine.
➪ check electric system (power supply). Consult chapter 13.4)
➪ check wiring. See chapter 12.3.16)
If no physical damage can be detected check the TCU. Consult chapter 13.6).
â– ATTENTION: If the limits of operation are exceeded or fall short of, conduct
additional relevant checks.
â–² WARNING: Do not start the engine before trouble is found and rectified.
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