содержание .. 391 392 393 394 ..
Nissan Tiida C11. Manual - part 393
EC-222
< COMPONENT DIAGNOSIS >
[HR16DE (WITH EURO-OBD)]
P1121 ELECTRIC THROTTLE CONTROL ACTUATOR
P1121 ELECTRIC THROTTLE CONTROL ACTUATOR
Description
INFOID:0000000001670987
Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc.
The throttle control motor is operated by the ECM and it opens and closes the throttle valve.
The throttle position sensor detects the throttle valve position, and the opening and closing speed of the throt-
tle valve and feeds the voltage signals to the ECM. The ECM judges the current opening angle of the throttle
valve from these signals and the ECM controls the throttle control motor to make the throttle valve opening
angle properly in response to driving condition.
DTC Logic
INFOID:0000000001670988
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION A AND B
1.
Turn ignition switch ON and wait at least 1 second.
2.
Set shift lever to D (A/T), 1st (M/T) position and wait at least 3 seconds.
3.
Set shift lever to P or N (A/T), Neutral (M/T) position.
4.
Turn ignition switch OFF and wait at least 10 seconds.
5.
Turn ignition switch ON and wait at least 1 second.
6.
Set shift lever to D (A/T), 1st (M/T) position and wait at least 3 seconds.
7.
Set shift lever to P or N (A/T), Neutral (M/T) position.
8.
Turn ignition switch OFF, wait at least 10 seconds, and then turn ON.
9.
Check DTC.
Is DTC detected?
YES
>> Go to
NO
>> GO TO 3.
3.
PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION C
1.
Turn ignition switch ON and wait at least 1 second.
2.
Set shift lever to D (A/T), 1st (M/T) position and wait at least 3 seconds.
3.
Set shift lever to P or N (A/T), Neutral (M/T) position.
4.
Start engine and let it idle for 3 seconds.
5.
Check DTC.
Is DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000001670989
1.
CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1121
Electric throttle control
actuator
A)
Electric throttle control actuator does not func-
tion properly due to the return spring malfunc-
tion.
• Electric throttle control actuator
B)
Throttle valve opening angle in fail-safe mode is
not in specified range.
C)
ECM detect the throttle valve is stuck open.