|
07
|
SELECT
ACTUATOR
EGR
PULS. RATIO
|
This check can be performed in
two operating conditions: "ignition ON, engine OFF" and
"engine running at idle speed".
Carry out check 1 if the engine does not start; otherwise
proceed to check 2
|
|
33,
34
|
23, 19
|
|
07
|
SELECT
ACTUATOR
EGR
PULS. RATIO
|
Check l:
Ignition ON
Engine OFF
Press key F5 in the system main
menu, select the desired test using the arrow keys and confirm with YES.
Follow the instructions in the
TECH 1 display.
Note:
After the test is started, the
exhaust gas
recirculation valve is actuated
at a frequency of 0.5 Hz and the exhaust gas recirculation valve is switched
on and off.
The check is completed after a
maximum of 30 s.
|
The exhaust gas recirculation
valve switches alternately:
INACTIVE
ACTIVE
Noise check: clicking noise from
exhaustgas recirculation valve
|
33,
34
|
23, 19
|
|
07
|
SELECT
ACTUATOR
EGR
PULS. RATIO
|
Check 2:
Engine running at idle speed,
operating
temperature
Throttle valve CLOSED
(acccelerator pedal in idle position)
Vehicle stationary
Press key F5 in the system main
menu, select the desired test using the arrow keys and confirm with YES.
Follow the instructions in the
TECH 1 display.
Note:
The exhaust gas recirculation
valve is actuated at a frequency of 0.5 Hz (actuation duration 500 ms).
The check is completed after a
maximum of 30 s.
|
TECH 1 display shows alternately
0 %
43 %
During the test, the engine
speed may oscillate
|
-
|
-
|
