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.
P1121 ELECTRIC THROTTLE CONTROL ACTUATOR
EC-223
< COMPONENT DIAGNOSIS >
[HR16DE (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
1.
Turn ignition switch OFF.
2.
Remove the intake air duct.
3.
Check if foreign matter is caught between the throttle valve (1)
and the housing.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Remove the foreign matter and clean the electric throttle
control actuator inside.
2.
REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1.
Replace electric throttle control actuator.
2.
Go to
EC-223, "Special Repair Requirement"
.
>> INSPECTION END
Special Repair Requirement
INFOID:0000000001670990
1.
PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
EC-27, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement"
>> GO TO 2.
2.
PERFORM IDLE AIR VOLUME LEARNING
EC-27, "IDLE AIR VOLUME LEARNING : Special Repair Requirement"
>> END
2.
Electric throttle control actuator
JMBIA0447ZZ
EC-224
< COMPONENT DIAGNOSIS >
[HR16DE (WITH EURO-OBD)]
P1122 ELECTRIC THROTTLE CONTROL FUNCTION
P1122 ELECTRIC THROTTLE CONTROL FUNCTION
Description
INFOID:0000000001670991
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 current opening angle of the throttle valve is detected by the throttle position sensor and it provides feed-
back to the ECM to control the throttle control motor to make the throttle valve opening angle properly in
response to driving condition.
DTC Logic
INFOID:0000000001670992
DTC DETECTION LOGIC
NOTE:
If DTC P1122 is displayed with DTC P1121 or P1126, first perform the trouble diagnosis for DTC P1121
or P1126. Refer to
.
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.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 11V when engine
is running.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch ON and wait at least 2 seconds.
2.
Start engine and let it idle for 5 seconds.
3.
Check DTC.
Is DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000001670993
1.
CHECK GROUND CONNECTION
1.
Turn ignition switch OFF.
2.
Check ground connection E15. Refer to Ground Inspection in
.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace ground connection.
2.
CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-I
1.
Check the voltage between ECM harness connector terminals as follows.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1122
Electric throttle control
performance
Electric throttle control function does not oper-
ate properly.
• Harness or connectors
(Throttle control motor circuit is open or
shorted)
• Electric throttle control actuator
P1122 ELECTRIC THROTTLE CONTROL FUNCTION
EC-225
< COMPONENT DIAGNOSIS >
[HR16DE (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
Is the inspection result normal?
YES
>> GO TO 10.
NO
>> GO TO 3.
3.
CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-II
1.
Turn ignition switch OFF.
2.
Check the voltage between ECM harness connector terminals as follows.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> GO TO 4.
4.
CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT
1.
Disconnect ECM harness connector.
2.
Disconnect IPDM E/R harness connector.
3.
Check the continuity between ECM harness connector and IPDM E/R harness connector.
4.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> GO TO 5.
5.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E8, F8
• Harness for open or short between ECM and IPDM E/R
>> Repair open circuit or short to ground or short to power in harness connectors.
6.
CHECK FUSE
1.
Disconnect 15A fuse (No. 52) from IPDM E/R.
2.
Check 15A fuse for blown.
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> Replace 15A fuse.
7.
CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-III
1.
Check the continuity between ECM harness connector and IPDM E/R harness connector.
(+)
(–)
Condition
Voltage
Connector
Terminal
Connector
Terminal
F10
2
F16
108
Ignition switch OFF
Approx. 0V
Ignition switch ON
Battery voltage
(+)
(–)
Voltage
Connector
Terminal
Connector
Terminal
F10
15
E16
108
Battery voltage
IPDM E/R
ECM
Continuity
Connector
Terminal
Connector
Terminal
E46
46
F10
15
Existed
IPDM E/R
ECM
Continuity
Connector
Terminal
Connector
Terminal
E43
8
F10
2
Existed
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