Switch off the ignition and leave it off for at least 20 seconds.
Bridge the contacts on the fuel pump relay with a spare fuse.
Connect the voltage indicator to the diagnostic connector -A- as shown in the figure (black) and -B- (brown). The diagnostic connector is located in a recess under the shelf in the driver's footwell.
Connect plugs -C- and -D-.
Start the engine and let it idle.
After waiting 4 sec. remove fuse or disconnect plugs -C- and -D-.
Warm up the lambda probe. To do this, bring the speed from 2000 to 3500 rpm for 1 minute.
Attention: Above 4000 rpm the display module is switched off. Stop the engine and, by inserting the fuse back, activate the module.
While the engine is idling, take readings from the indicator (up to 7.88 from the instrument panel). If LED (fault lamp) flashes 3 times every 2 seconds, it means that the CO content lies in the permissible range of the lambda control. To check the value, despite the correct lamp signals, check the lambda control.
If the LED stays on, the cold run mixture is too rich.
If the LED is off, the cold run mixture is too lean or the LED is faulty (bulb).
If LED (bulb) flashes 25 times per second, the lambda probe has not warmed up, the lambda probe cable is broken or broken, or the plug connection is disconnected.
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