Test Point 23 - Check Engine Warning Lamp

TEST POINT 23 - Check Engine warning lamp - Fault code 1_45

Possible Causes, Elimination, Remarks
A ground signal is fed from the control unit - terminal 21 - to the "Check Engine lamp", causing this lamp to come on when an emission control component fails.

If the "Check Engine" warning lamp fails, this fault is stored in the fault memory.

- Check by supplying ground to disconnected Digital Motor Electronics (DME) control unit plug terminal 21 and switching on ignition. The Check Engine lamp must now come on.

To replace a faulty display lamp, always use the specified lamp.

To read errors using the Check Engine warning lamp, Description and Operation