Nissan Sentra. Manual — part 436
EC-440
< DTC/CIRCUIT DIAGNOSIS >
[MRA8DE]
P2135 TP SENSOR
2. Reconnect all harness connectors disconnected.
3. Perform “ Throttle Valve Closed Position Learning”. Refer to
4. Turn ignition switch ON.
5. Set selector lever to D (CVT) or 1st (M/T) position.
6. Check the voltage between ECM harness connector terminals as per the following conditions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace electric throttle control actuator. Refer to
EM-27, "Removal and Installation"
ECM
Condition
Voltage
Connec-
tor
+
−
Terminal
F25
77
78
Accelerator
pedal
Fully released
Less than 4.75 V
Fully depressed
More than 0.36 V
79
Fully released
More than 0.36 V
Fully depressed
Less than 4.75 V
P2138 APP SENSOR
EC-441
< DTC/CIRCUIT DIAGNOSIS >
[MRA8DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
P2138 APP SENSOR
DTC Logic
INFOID:0000000009758698
DTC DETECTION LOGIC
NOTE:
If DTC P2138 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 procedure
before conducting 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:0000000009758699
1.
CHECK APP SENSOR 1 POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect accelerator pedal position (APP) sensor harness connector.
3. Turn ignition switch ON.
4. Check the voltage between APP sensor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 2.
2.
CHECK APP SENSOR 1 POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
DTC No.
CONSULT screen terms
(Trouble diagnosis con-
tent)
DTC detecting condition
Possible cause
P2138
APP SENSOR
(Throttle/Pedal position
sensor/switch “D” / “E”
voltage correlation)
Rationally incorrect voltage is sent to ECM
compared with the signals from APP sensor
1 and APP sensor 2.
• Harness or connector
(APP sensor 1 or 2 circuit is open or
shorted.)
• Accelerator pedal position sensor
(APP sensor 1 or 2)
• Sensor power supply 2 circuit
+
−
Voltage
(Approx.)
APP sensor
Connector
Terminal
E12
4
Ground
5.0 V
EC-442
< DTC/CIRCUIT DIAGNOSIS >
[MRA8DE]
P2138 APP SENSOR
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.
Is the inspection result normal?
YES
>> Perform the trouble diagnosis for power supply circuit.
NO
>> Repair or replace error-detected parts.
3.
CHECK APP SENSOR 2 POWER SUPPLY
Check the voltage between APP sensor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 4.
4.
CHECK SENSOR POWER SUPPLY 2 CIRCUIT
Check sensor power supply 2 circuit. Refer to
.
Is inspection result normal?
YES
>> Perform the trouble diagnosis for power supply circuit.
NO
>> Repair or replace error-detected parts.
5.
CHECK APP SENSOR GROUND CIRCUIT
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 power.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace error-detected parts.
6.
CHECK APP SENSOR INPUT SIGNAL CIRCUIT
1. Check the continuity between APP sensor harness connector and ECM harness connector.
+
−
Continuity
APP sensor
ECM
Connector
Terminal
Connector
Terminal
E12
4
E16
122
Existed
+
−
Voltage
(Approx.)
APP sensor
Connector
Terminal
E12
5
Ground
5.0 V
+
−
Continuity
APP sensor
ECM
Connector
Terminal
Connector
Terminal
E12
1
E16
120
Existed
2
127
P2138 APP SENSOR
EC-443
< DTC/CIRCUIT DIAGNOSIS >
[MRA8DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
2. Also check harness for short to ground and to power.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Repair or replace error-detected parts
7.
CHECK APP SENSOR
Check APP sensor. Refer to
EC-443, "Component Inspection (APP Sensor)"
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-39, "Intermittent Incident"
.
NO
>> Replace accelerator pedal assembly. Refer to
ACC-3, "Removal and Installation"
Component Inspection (APP Sensor)
INFOID:0000000009758700
1.
CHECK ACCELERATOR PEDAL POSITION SENSOR
1. Turn ignition switch OFF.
2. Reconnect all harness connectors disconnected.
3. Turn ignition switch ON.
4. Check the voltage between ECM harness connector terminals as per the following condition.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace accelerator pedal assembly. Refer to
ACC-3, "Removal and Installation"
+
−
Continuity
APP sensor
ECM
Connector
Terminal
Connector
Terminal
E12
3
E16
126
Existed
6
119
ECM
Condition
Voltage
Connector
+
−
Terminal
E16
126
127
Accelerator pedal
Fully released
0.6 - 0.9 V
Fully depressed
3.9 - 4.7 V
119
120
Fully released
0.3 - 0.6 V
Fully depressed
1.95 - 2.4 V
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