Nissan Quest E52. Manual - part 549

 

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Nissan Quest E52. Manual - 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 

EC-406, "Diagnosis Procedure"

.

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 >

[VQ35DE]

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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 

EC-442, "Diagnosis Procedure"

.)

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 

ACC-3, "Exploded View"

.

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 

ACC-3, "Exploded View"

.

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

EC-337, "DTC 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 

EC-409, "Diagnosis Procedure"

.

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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