Infiniti M35/M45 Y50. Manual — part 722
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DTC P2138 APP SENSOR
EC-1361
[VK45DE]
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EC
2.
CHECK APP SENSOR 1 POWER SUPPLY CIRCUIT
1.
Disconnect accelerator pedal position (APP) sensor (1) harness
connector.
2.
Turn ignition switch ON.
3.
Check voltage between APP sensor terminal 4 and ground with
CONSULT-II or tester.
OK or NG
OK
>> GO TO 4.
NG
>> GO TO 3.
3.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors E108, M15
●
Harness for open or short between ECM and accelerator pedal position sensor
>> Repair open circuit or short to ground or short to power in harness or connectors.
4.
CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-I
1.
Turn ignition switch ON.
2.
Check voltage between APP sensor terminal 5 and ground with
CONSULT-II or tester.
OK or NG
OK
>> GO TO 10.
NG
>> GO TO 5.
PBIB2704E
Voltage: Approximately 5V
PBIA9606J
Voltage: Approximately 5V
PBIA9607J
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EC-1362
[VK45DE]
DTC P2138 APP SENSOR
5.
CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-II
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check harness continuity between APP sensor terminal 5 and ECM terminal 91.
Refer to Wiring Diagram.
OK or NG
OK
>> GO TO 7.
NG
>> GO TO 6.
6.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors E108, M15
●
Harness for open or short between ECM and accelerator pedal position sensor
>> Repair open circuit.
7.
CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-III
Check harness for short to power and short to ground, between the following terminals.
OK or NG
OK
>> GO TO 8.
NG
>> Repair short to ground or short to power in harness or connectors.
8.
CHECK THROTTLE POSITION SENSOR
Refer to
EC-1356, "Component Inspection"
OK or NG
OK
>> GO TO 16.
NG
>> GO TO 9.
9.
REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1.
Replace the electric throttle control actuator.
2.
Perform
EC-788, "Throttle Valve Closed Position Learning"
.
3.
Perform
EC-788, "Idle Air Volume Learning"
.
>> INSPECTION END
Continuity should exist.
ECM terminal
Sensor terminal
Reference Wiring Diagram
91
APP sensor terminal 4
47
Electric throttle control actuator terminal 1
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DTC P2138 APP SENSOR
EC-1363
[VK45DE]
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EC
10.
CHECK APP SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check harness continuity between APP sensor terminal 2 and ECM terminal 82, APP sensor terminal 1
and ECM terminal 83.
Refer to Wiring Diagram.
4.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 12.
NG
>> GO TO 11.
11.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors E108, M15
●
Harness for open or short between ECM and accelerator pedal position sensor
>> Repair open circuit or short to ground or short to power in harness or connectors.
12.
CHECK APP SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Check harness continuity between ECM terminal 106 and APP sensor terminal 3, ECM terminal 98 and
APP sensor terminal 6.
Refer to Wiring Diagram.
2.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 14.
NG
>> GO TO 13.
13.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors E108, M15
●
Harness for open or short between ECM and accelerator pedal position sensor
>> Repair open circuit or short to ground or short to power in harness or connectors.
14.
CHECK APP SENSOR
Refer to
EC-1364, "Component Inspection"
.
OK or NG
OK
>> GO TO 16.
NG
>> GO TO 15.
Continuity should exist.
Continuity should exist.
![](/vehicles/zatt/cen/houeebante/fesex.png)
EC-1364
[VK45DE]
DTC P2138 APP SENSOR
15.
REPLACE ACCELERATOR PEDAL ASSEMBLY
1.
Replace accelerator pedal assembly.
2.
Perform
EC-788, "Accelerator Pedal Released Position Learning"
3.
Perform
EC-788, "Throttle Valve Closed Position Learning"
.
4.
Perform
EC-788, "Idle Air Volume Learning"
.
>> INSPECTION END
16.
CHECK INTERMITTENT INCIDENT
Refer to
EC-857, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
.
>> INSPECTION END
Component Inspection
NBS005PB
ACCELERATOR PEDAL POSITION SENSOR
1.
Reconnect all harness connectors disconnected.
2.
Turn ignition switch ON.
3.
Check voltage between ECM terminals 106 (APP sensor 1 sig-
nal), 98 (APP sensor 2 signal) and ground under the following
conditions.
4.
If NG, replace accelerator pedal assembly and go to next step.
5.
Perform
EC-788, "Accelerator Pedal Released Position Learning"
6.
Perform
EC-788, "Throttle Valve Closed Position Learning"
.
7.
Perform
EC-788, "Idle Air Volume Learning"
.
Removal and Installation
NBS005PC
ACCELERATOR PEDAL
Refer to
ACC-3, "ACCELERATOR CONTROL SYSTEM"
.
Terminal
Accelerator pedal
Voltage
106
(Accelerator pedal position
sensor 1)
Fully released
0.4 - 1.1V
Fully depressed
3.7 - 4.8V
98
(Accelerator pedal position
sensor 2)
Fully released
0.20 - 0.55V
Fully depressed
1.85 - 2.40V
MBIB0023E
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