|
No.
|
TECH 1-Display
|
Conditions
for Checking
|
Nominal
Value
|
Trouble
Codes
|
Terminal
|
|
09
|
SELECT
ACTUATOR
INT.
MANIF. V2
|
Check information:
Carry out check 1 if the
engine does not start; otherwise proceed to check 2 (check of MULTI RAM
system).
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.
|
Noise check:
clicking noise from intake manifold switchover valve 2
|
124,
133
134
|
19,
31
|
|
|
|
Check 1 (check of intake
manifold switchover valve 2):
Ignition ON
Engine OFF
|
Intake manifold switchover valve
2
switches alternately:
ACTIVE 0 V
INACTIVE 12 V
|
|
|
|
|
|
Note:
Intake manifold switchover valve
2 is actuated at a frequency of 0.5 Hz (actuation duration
1 s). The check is completed after a maximum of 30 s
|
|
|
|
|
|
|
Remark:
Intake manifold switchover valve
2 is located in the intake manifold. At engine speeds above 3300 rpm,
it is switched from closed to open.
|
|
|
|
|
|
|
Check 2 (check of
MULTI RAM system):
Engine running at idle speed,
operating temperature
Throttle valve CLOSED
(accelerator 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
|
Intake manifold switchover valve
2 switches alternately:
ACTIVE 0 V
INACTIVE 12 V
Noise check:
clicking noise from intake
manifold switchover valve 2
The motion of the vacuum valve pistonis visible in the
engine compartment
|
|
|
|
|
|
Note:
Intake manifold switchover valve
2 is actuated at a frequency of 0.5 Hz (actuation duration
1 s).
The check is completed after a
maximum of 30 s.
|
|
|
|
|
Notes on Trouble - shooting:
|
Nominal Value:
|
Cause of Fault:
|
|
· Ignition
ON
|
|
|
|
· Using
multimeter, measure voltage at plug of intake manifold switchover valve 2 for
resonance valve Y 19 / Ter. 1 to ground
|
11.5 to 13.5 V
|
· Lead
interruptions from injectors relay K 43 / Ter. 8 to intake
manifold switchover valve 2 for resonance valve Y 19 / Ter. 1
|
|
· Ignition
OFF
· Disconnect
control unit K 61 from wiring harness
· Using
multimeter, check from plug of intake manifold switchover valve 2 for
resonance valve Y 19 / Ter. 2 to control unit K 61 /
Ter. 31 for passage and short circuit to ground
|
0 W
|
· Short
circuit or lead interruption from intake manifold switchover valve 2 for
resonance valve Y 19 / Ter. 2 to control unit K 61 /
Ter. 31
|
|
· Check
vacuum hoses between intake manifold switchover valve 2 for resonance valve
Y 19 and
- intake
manifold
- throttle
body
for leaks, kinks and passage
|
No leaks
No kinks
Passage
|
· Vacuum
hoses blocked or defective
|
|
Nominal values are attained
|
|
· Intake
manifold switchover valve 2 for resonance valve defective
· Intake
manifold switchover valve 2 Y 19 defective
· Control
unit K 61 defective
|
|
|
|
|
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|
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