BA 35203_04 * 3.0 * 35203_04_07_Wartung.fm 7-81
Maintenance 7
Monitoring of SCR catalytic converter: degree of efficiency
If the efficiency level is excessively low despite successful refilling,
warnings and/or warning lights will appear 66 on the digital display.
Warnings also occur due to the use of an incorrect urea solution.
➥ If a manipulated element or the use of an incorrect reducing agent is
detected, the diesel engine performance is reduced. The performance
reduction occurs gradually and depends on the engine output.
Symbol
in field G
Message Result
• No symbol appears in the field G of
the digital display.
• Warning light66
does not light up.
• No acoustic signal.
Normal operating
conditions
• The exhaust
after-treatment is in the
permissible range.
• Symbol G/4 appears
continuously.
• Warning light66
lights up
continuously.
• An acoustic signal
sounds.
Caution! Critical condition
• The diesel engine goes
into protective functions
and performance is
reduced by 30%.
➥ Contact an authorized
service centre.
• Symbol G/4 appears
continuously.
• Warning light 66
flashes.
• An acoustic signal
sounds.
Caution! Extremely critical
condition
• Diesel engine goes into
protective functions and
performance is reduced
by 30%.
• The speed of the diesel
engine is limited.
(1200 rpm).
➥ Contact an authorized
service centre.
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