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12.4.16) Flashing of the orange caution lamp
12.4.17) Failure of power supply to the TCU
Page
Date
122
1997 02 01
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.
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).
ATTENTION: If the limits of operation are exceeded or fall short of, conduct
additional relevant checks.
WARNING:
Do not start the engine before trouble is found and rectified.
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).
ATTENTION: If the limits of operation are exceeded or fall short of, conduct
additional relevant checks.
WARNING:
Do not start the engine before trouble is found and rectified.
Main
914 F
Reference
Modification no.
- 0 -
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Troubleshooting
