Description of drive and system test,
Asee function test, J104
- ESP drive and system test
The ESP drive test checks the sensors in
the ESP system.
JYaw rate sender -G202
JBrake pressure sender
-G201 in ESP system
Once the ESP drive test has been started
it cannot be aborted and must be completed.
J After quitting diagnosis
the ABS lamp remains on to indicate that the test is active. The ABS and ESP
functions are disabled and not operative.
J Compliance with road
traffic regulations and observance of traffic conditions always has top
J The diagnostic
tester is not required to perform the drive and system test. Take the
diagnostic tester out of the vehicle.
- The vehicle must be standing on a flat
- Activate the drive and system test by
Guided Fault Finding
- Unplug the diagnostic connector from
the diagnostic tester
- Start the engine
J ESP lamp in dash panel
insert lit steadily and fault 01486 System test active entered in fault memory
- Press the brake pedal down forcefully
> 45 bar (standstill readout)
J The ESP lamp goes out
and the ABS lamp lights
-Run a right-hand and left-hand
bend at a speed of v = 20 ...30 km/h
J If the ABS lamp goes
out, the test is passed.
If the ABS lamp remains lit, the test is
n.OK (system locked) and must be repeated.
- The manoeuvre can be
repeated by switching the ignition off and back on and pressing the brake.
Lamp activation for drive
Drive test ESP
lamp ABS lamp Brake warning lamp
on off off
pressed off on off
Drive checks OK
off off off
Fault in ESP system
on on on