Nissan Murano. Manual — part 577
EC-418
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P2119 ELECTRIC THROTTLE CONTROL ACTUATOR
Diagnosis Procedure
INFOID:0000000009720170
1.
CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
1.
Turn ignition switch OFF.
2.
Remove the intake air duct. Refer to
.
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, and then perform throttle valve
closed position learning. Refer to
VALVE CLOSED POSITION LEARNING : Description"
2.
REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1.
Replace electric throttle control actuator. Refer to
.
2.
Go to
EC-418, "Special Repair Requirement"
.
>> INSPECTION END
Special Repair Requirement
INFOID:0000000009720171
1.
PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
EC-19, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement"
>> GO TO 2.
2.
PERFORM IDLE AIR VOLUME LEARNING
EC-20, "IDLE AIR VOLUME LEARNING : Special Repair Requirement"
>> END
JMBIA1132ZZ
P2122, P2123 APP SENSOR
EC-419
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
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P2122, P2123 APP SENSOR
Description
INFOID:0000000009720172
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 signals 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:0000000009720173
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 10 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
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009720174
1.
CHECK GROUND CONNECTION
1.
Turn ignition switch OFF.
2.
Check ground connection E38. 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
(APP sensor 1 circuit is open or shorted.)
• Accelerator pedal position sensor
(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.
EC-420
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P2122, P2123 APP SENSOR
YES
>> GO TO 2.
NO
>> Repair or replace ground connection.
2.
CHECK APP SENSOR 1 POWER SUPPLY CIRCUIT
1.
Disconnect accelerator pedal position (APP) sensor harness connector.
2.
Turn ignition switch ON.
3.
Check the voltage between APP sensor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair open circuit, short to ground or short to power in harness or connectors.
3.
CHECK APP SENSOR 1 GROUND CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check the continuity between APP sensor harness connector and ECM harness connector.
4.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair open circuit, short to ground or short to power in harness or connectors.
4.
CHECK APP SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Check the continuity between APP sensor harness connector and ECM harness connector.
2.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair open circuit, short to ground or short to power in harness or connectors.
5.
CHECK APP SENSOR
EC-421, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> GO TO 6.
6.
REPLACE ACCELERATOR PEDAL ASSEMBLY
1.
Replace accelerator pedal assembly. Refer to
.
2.
EC-421, "Special Repair Requirement"
>> INSPECTION END
7.
CHECK INTERMITTENT INCIDENT
GI-44, "Intermittent Incident"
APP sensor
Ground
Voltage (V)
Connector
Terminal
E110
4
Ground
Approx. 5
APP sensor
ECM
Continuity
Connector
Terminal
Connector
Terminal
E110
2
E16
84
Existed
APP sensor
ECM
Continuity
Connector
Terminal
Connector
Terminal
E110
3
E16
81
Existed
P2122, P2123 APP SENSOR
EC-421
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
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>> INSPECTION END
Component Inspection
INFOID:0000000009720175
1.
CHECK ACCELERATOR PEDAL POSITION SENSOR
1.
Reconnect all harness connectors disconnected.
2.
Turn ignition switch ON.
3.
Check the voltage between ECM harness connector terminals under the following conditions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 2.
2.
REPLACE ACCELERATOR PEDAL ASSEMBLY
1.
Replace accelerator pedal assembly. Refer to
.
2.
Go to
EC-421, "Special Repair Requirement"
.
>> INSPECTION END
Special Repair Requirement
INFOID:0000000009720176
1.
PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING
Refer to
EC-19, "ACCELERATOR PEDAL RELEASED POSITION LEARNING : Special Repair Requirement"
.
>> GO TO 2.
2.
PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
EC-19, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement"
>> GO TO 3.
3.
PERFORM IDLE AIR VOLUME LEARNING
EC-20, "IDLE AIR VOLUME LEARNING : Special Repair Requirement"
>> END
ECM
Condition
Voltage (V)
+
–
Connector
Terminal
Connector
Terminal
E16
81
(APP sensor 1 sig-
nal)
E16
84
(Sensor ground)
Accelerator pedal
Fully released
0.5 - 1.0
Fully depressed
4.2 - 4.8
82
(APP sensor 2 sig-
nal)
100
(Sensor ground)
Fully released
0.25 - 0.50
Fully depressed
2.0 - 2.5
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