Description of drive and system test,
test J104 - ESP drive and system test or in vehicle self-diagnosis
select function 04 Basic
setting and enter the number 3
The ESP drive test
checks the sensors in the ESP system.
acceleration sender -G200
J Yaw rate
pressure sender -G201 in ESP system
Once the ESP drive test
has been started it cannot be aborted and must be completed.
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.
Compliance with road
traffic regulations and observance of traffic conditions always has top
I The vehicle
must be standing on a flat surface
- Activate the drive and
system test by Guided Fault Finding
or in vehicle
self-diagnosis select function 04 and enter 03
- 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
- Press the brake pedal
down forcefully > 30 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