Nissan Quest E52. Instruction — part 549
EC-406
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P2127, P2128 APP SENSOR
P2127, P2128 APP SENSOR
DTC Logic
INFOID:0000000009651262
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.
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
>> Proceed to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009651263
1.
CHECK APP SENSOR 2 POWER SUPPLY
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 5.
NO
>> GO TO 2.
2.
CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P2127
Accelerator pedal posi-
tion sensor 2 circuit low
input
An excessively low voltage from the APP sen-
sor 2 is sent to ECM.
• Harness or connectors
(APP sensor 2 circuit is open or shorted.)
[CKP sensor (POS) circuit is shorted.]
(Refrigerant pressure sensor circuit is
shorted.)
(EVAP control system pressure sensor
circuit is shorted.)
• Accelerator pedal position sensor
(APP sensor 2)
• Crankshaft position sensor (POS)
• EVAP control system pressure sensor
• Refrigerant pressure sensor
P2128
Accelerator pedal posi-
tion sensor 2 circuit high
input
An excessively high voltage from the APP sen-
sor 2 is sent to ECM.
APP sensor
Ground
Voltage (V)
Connector
Terminal
E110
5
Ground
Approx. 5
P2127, P2128 APP SENSOR
EC-407
< DTC/CIRCUIT DIAGNOSIS >
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3.
Check the continuity between APP sensor harness connector and ECM harness connector.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair open circuit.
3.
CHECK SENSOR POWER SUPPLY CIRCUIT
Check harness for short to power and short to ground, between the following terminals.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair short to ground or short to power in harness or connectors.
4.
CHECK COMPONENTS
Check the following.
• Crankshaft position sensor (POS) (Refer to
EC-273, "Component Inspection"
• EVAP control system pressure sensor (Refer to
EC-305, "Component Inspection"
.)
• Refrigerant pressure sensor (Refer to
.)
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-42, "Intermittent Incident"
.
NO
>> Replace malfunctioning components.
5.
CHECK APP SENSOR 2 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 6.
NO
>> Repair open circuit, short to ground or short to power in harness or connectors.
6.
CHECK APP SENSOR 2 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?
APP sensor
ECM
Continuity
Connector
Terminal
Connector
Terminal
E110
5
E16
103
Existed
ECM
Sensor
Connector
Terminal
Name
Connector
Terminal
F8
96
Refrigerant pressure sensor
E300
1
54
CKP sensor (POS)
F20
1
E16
103
APP sensor
E110
5
107
EVAP control system pressure sensor
B22
3
APP sensor
ECM
Continuity
Connector
Terminal
Connector
Terminal
E110
1
E16
116
Existed
APP sensor
ECM
Continuity
Connector
Terminal
Connector
Terminal
E110
6
E16
98
Existed
EC-408
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P2127, P2128 APP SENSOR
YES
>> GO TO 7.
NO
>> Repair open circuit, short to ground or short to power in harness or connectors.
7.
CHECK APP SENSOR
Check APP sensor. Refer to
EC-408, "Component Inspection"
.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-42, "Intermittent Incident"
.
NO
>> Replace accelerator pedal assembly. Refer to
Component Inspection
INFOID:0000000009651264
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
>> Replace accelerator pedal assembly. Refer to
ECM
Condition
Voltage (V)
+
–
Connector
Terminal
Connector
Terminal
E16
97
(APP sensor 1 sig-
nal)
E16
100
(Sensor ground)
Accelerator pedal
Fully released
0.5 - 1.0
Fully depressed
4.2 - 4.8
98
(APP sensor 2 sig-
nal)
116
(Sensor ground)
Fully released
0.25 - 0.50
Fully depressed
2.0 - 2.5
P2135 TP SENSOR
EC-409
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
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P2135 TP SENSOR
DTC Logic
INFOID:0000000009651265
DTC DETECTION LOGIC
NOTE:
If DTC P2135 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
>> Proceed to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009651266
1.
CHECK THROTTLE POSITION SENSOR POWER SUPPLY
1.
Disconnect electric throttle control actuator harness connector.
2.
Turn ignition switch ON.
3.
Check the voltage between electric throttle control actuator harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair open circuit, short to ground or short to power in harness or connectors.
2.
CHECK THROTTLE POSITION SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check the continuity between electric throttle control actuator harness connector and ECM harness con-
nector.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P2135
Throttle position sensor
circuit range/perfor-
mance
Rationally incorrect voltage is sent to ECM
compared with the signals from TP sensor 1
and TP sensor 2.
• Harness or connector
(TP sensor 1 or 2 circuit is open or short-
ed.)
• Electric throttle control actuator
(TP sensor 1 or 2)
Electric throttle control actuator
Ground
Voltage (V)
Connector
Terminal
F29
1
Ground
Approx. 5
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