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No.
|
TECH 1-Display
|
Conditions
for Checking
|
Nominal
Value
|
Trouble
Codes
|
Terminal
|
|
08
|
SELECT
ACTUATOR INT. MANIF. V 1
|
Check information:
Carry out check 1 if the
engine does not start; otherwise proceed to check 2 (check of MULTI RAM
system).
|
|
59,
63
123
|
6,
24
|
|
|
|
Check 1 (check of intake
manifold switchover valve l):
Ignition ON
Engine OFF
|
Intake manifold switchover valve
1 switches alternately:
ACTIVE 0 V
INACTIVE 12 V
|
|
|
|
|
|
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:
Intake manifold switchover valve
1 is actuated at a frequency of 0.5 Hz (actuation duration
1 s).
The check is completed after a
maximum of 30 s
|
Noise check:
clicking noise from intake manifold switchover valve 1
|
|
|
|
|
|
Remark:
Intake manifold switchover valve
1 is located in the intake plenum of the intake system. At an engine
speed higher than 4200 rpm, it is switched from closed to open.
|
|
|
|
|
|
|
Check 2 (check of
MULTI RAM system):
Engine running at idle speed
Engine running at idle speed,
operating temperature
Throttle valve CLOSED
(accelerator pedal in idle position)
Vehicle stationary
|
Intake manifold switchover valve
1 switches alternately:
ACTIVE 0 V
INACTIVE 12 V
During the test, the engine speed may oscillate slightly
|
|
|
|
|
|
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:
Intake manifold switchover valve
1 is actuated at a frequency of 0.5 Hz (actuation duration
1 s).
The check is completed after a
maximum of 30 s.
|
Noise check:
clicking noise from intake
manifold switchover valve 1
The motion of the vacuum valve pistonis visible in the
engine compartment
|
|
|
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Notes on Trouble - shooting:
|
Nominal Value:
|
Cause of Fault:
|
|
· Ignition
ON
|
|
|
|
· Using
multimeter, measure voltage at plug of intake manifold switchover valve 1 for
intake plenum switchover valve Y 46 / Ter. 1 to ground
|
11.5 to 13.5 V
|
· Lead
interruptions from injectors relay K 43 / Ter. 8 to intake
manifold switchover valve Y 46 / Ter. 1
|
|
· Ignition
OFF
· Disconnect
control unit K 61 from wiring harness
· Using
multimeter, check from plug of intake manifold switchover valve
1 Y 46 / Ter. 2 to control unit K 61 /
Ter. 6 for passage and short circuit to ground
|
0 W
|
· Short
circuit or lead interruption from intake manifold switchover valve
Y 46 / Ter. 2 to control unit K 61 / Ter. 6
|
|
· Check
vacuum hoses between intake manifold switchover valve 1
switchover valve intake plenum
Y 46 and
- intake
manifold
- throttle
body
for leaks, kinks and passage
|
No leaks
No kinks
Passage
|
· Vacuum
hoses blocked or defective
|
|
Nominal values are attained
|
|
· Switchover
valve for intake plenum defective
· Intake
manifold switchover valve 1 defective
· Control
unit K 61 defective
|
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