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Location of exhaust emissions warning lamp
Note:
The exhaust emissions warning lamp can switch on in the continuous or flashing mode. Always interrogate fault memory
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◆ Flashing mode: There is a fault present which can damage the catalyst when continuing to drive at this power output. If this occurs, continue driving only at reduced output.
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◆ Continuous mode: There is a fault present which causes the emissions to deteriorate. Interrogate engine or gearbox control unit in this case.
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◆ Interrogate the fault memory if the customer has a complaint or there is a driving characteristic problem and the exhaust gas warning lamp does not light up, this is because faults can be stored which will not switch the exhaust gas warning lamp on immediately.
Functional check:
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‒ Switch on ignition:
the exhaust emissions warning lamp must light-up.
If the exhaust emissions warning lamp does not light-up with ignition switched on:
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‒ Check combi-instrument and exhaust emissions warning lamp as follows:
=> Current flow diagrams, Electrical fault finding and Fitting locations binder
If the exhaust emissions warning lamp lights-up with ignition switched on, continue check as follows:
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‒ Start engine and run at idling speed:
The exhaust emissions warning lamp must go out after
a few seconds.
If the exhaust emissions warning lamp does not go out:
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‒ Interrogate fault memory, if necessary, repair any faults and then erase fault memory => Page 01-17
, interrogating and erasing fault memory.
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