Nissan Altima L32. Instruction — part 581
P2118 THROTTLE CONTROL MOTOR
EC-1445
< COMPONENT DIAGNOSIS >
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
Special Repair Requirement
INFOID:0000000004362316
1.
PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
EC-1053, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement"
>> GO TO 2.
2.
PERFORM IDLE AIR VOLUME LEARNING
EC-1053, "IDLE AIR VOLUME LEARNING : Special Repair Requirement"
>> END
EC-1446
< COMPONENT DIAGNOSIS >
[VQ35DE]
P2119 ELECTRIC THROTTLE CONTROL ACTUATOR
P2119 ELECTRIC THROTTLE CONTROL ACTUATOR
Description
INFOID:0000000004362317
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 sends the voltage signals to the ECM. The ECM judges the current opening angle of the throttle
valve from these signals and opens/closes the throttle valve in response to driving conditions via the throttle
control motor.
DTC Logic
INFOID:0000000004362318
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-
ing the next test.
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
>> 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. Shift selector lever position to D (CVT) or 1st position (M/T) and wait at least 3 seconds.
3. Shift selector lever position to P (CVT) or neutral position (M/T).
4. Turn ignition switch OFF and wait at least 10 seconds.
5. Turn ignition switch ON and wait at least 1 second.
6. Shift selector lever position to D (CVT) or 1st position (M/T) and wait at least 3 seconds.
7. Shift selector lever position to P (CVT) or neutral position (M/T).
8. Turn ignition switch OFF, wait at least 10 seconds, and then turn ON.
9. Check DTC.
Is DTC detected?
YES
>> Go to
EC-1447, "Diagnosis Procedure"
NO
>> GO TO 3.
3.
PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION C
1. Turn ignition switch ON and wait at least 1 second.
2. Shift selector lever position to D (CVT) or 1st position (M/T) and wait at least 3 seconds.
3. Shift selector lever position to N, P (CVT) neutral position (M/T).
4. Start engine and let it idle for 3 seconds.
5. Check DTC.
Is DTC detected?
YES
>> Go to
EC-1447, "Diagnosis Procedure"
NO
>> INSPECTION END
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P2119
Electric throttle control
actuator
A)
Electric throttle control actuator does not function
properly due to the return spring malfunction.
• Electric throttle control actuator
B)
Throttle valve opening angle in fail-safe mode is
not in specified range.
C)
ECM detects that the throttle valve is stuck open.
P2119 ELECTRIC THROTTLE CONTROL ACTUATOR
EC-1447
< COMPONENT DIAGNOSIS >
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
Diagnosis Procedure
INFOID:0000000004362319
1.
CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
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.
-
Electric throttle control actuator (2)
-
: Vehicle front
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-1393, "Special Repair Requirement"
>> INSPECTION END
Special Repair Requirement
INFOID:0000000004362320
1.
PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
EC-1053, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement"
>> GO TO 2.
2.
PERFORM IDLE AIR VOLUME LEARNING
EC-1053, "IDLE AIR VOLUME LEARNING : Special Repair Requirement"
>> END
ALBIA0124ZZ
EC-1448
< COMPONENT DIAGNOSIS >
[VQ35DE]
P2122, P2123 APP SENSOR
P2122, P2123 APP SENSOR
Description
INFOID:0000000004362321
The accelerator pedal position sensor is installed on the upper end
of the accelerator pedal assembly. The sensor detects the accelera-
tor position and sends a signal to the ECM.
Accelerator pedal position sensor has two sensors. These sensors
are a kind of potentiometer which transform the accelerator pedal
position into output voltage, and emit the voltage signal to the ECM.
The ECM judges the current opening angle of the accelerator pedal
from these signals and controls the throttle control motor based on
these signals.
Idle position of the accelerator pedal is determined by the ECM
receiving the signal from the accelerator pedal position sensor. The
ECM uses this signal for engine operations such as fuel cut.
DTC Logic
INFOID:0000000004362322
DTC DETECTION LOGIC
NOTE:
If DTC P2122 or P2123 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643.
Refer to
.
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-
ing the next test.
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 8 V at idle.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine and let it idle for 1 second.
2. Check DTC.
Is DTC detected?
YES
>> Go to
EC-1448, "Diagnosis Procedure"
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000004362323
1.
CHECK GROUND CONNECTION
1. Turn ignition switch OFF.
2. Check ground connection E9. Refer to Ground Inspection in
.
Is the inspection result normal?
PBIB1741E
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P2122
Accelerator pedal posi-
tion sensor 1 circuit low
input
An excessively low voltage from the APP sen-
sor 1 is sent to ECM.
• Harness or connectors
[Accelerator pedal position (APP) sensor
1 circuit is open or shorted.]
• APP sensor 1
P2123
Accelerator pedal posi-
tion sensor 1 circuit high
input
An excessively high voltage from the APP sen-
sor 1 is sent to ECM.
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