Nissan Titan. Manual - part 286

 

  Index      Nissan     Nissan Titan (2014 year) - Service and Repair Manual

 

Search            

 

 

 

 

 

 

 

 

 

Content   ..  284  285  286  287   ..

 

 

Nissan Titan. Manual - part 286

 

 

P2135 TP SENSOR

EC-445

< DTC/CIRCUIT DIAGNOSIS >

[VK56DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

Refer to 

EC-154, "Ground Inspection"

.

OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace ground connections.

2.

CHECK THROTTLE POSITION SENSOR POWER SUPPLY CIRCUIT-I

1. Disconnect electric throttle control actuator (1) harness connec-

tor.

-

Illustration shows the view with intake air duct removed.

2. Turn ignition switch ON.

3. Check voltage between electric throttle control actuator terminal

2 and ground with CONSULT or tester.

OK or NG

OK

>> GO TO 7.

NG

>> GO TO 3.

3.

CHECK THROTTLE POSITION SENSOR POWER SUPPLY CIRCUIT-II

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Check harness continuity between electric throttle control actuator terminal 2 and ECM terminal 47.

Refer to Wiring Diagram.

OK or NG

OK

>> GO TO 4.

NG

>> Repair open circuit.

4.

CHECK THROTTLE POSITION SENSOR POWER SUPPLY CIRCUIT-III

Check harness for short to power and short to ground, between the following terminals.

BBIA0354E

BBIA0776E

Voltage: Approximately 5V

PBIB2065E

Continuity should exist.

ECM terminal

Sensor terminal

Reference Wiring Diagram

47

Electric throttle control actuator terminal 2

EC-88, "Wiring Diagram"

91

APP sensor terminal 6

EC-446

< DTC/CIRCUIT DIAGNOSIS >

[VK56DE]

P2135 TP SENSOR

OK or NG

OK

>> GO TO 5.

NG

>> Repair short to ground or short to power in harness or connectors.

5.

CHECK ACCELERATOR PEDAL POSITION SENSOR

Refer to 

EC-451, "Component Inspection"

.

OK or NG

OK

>> GO TO 11.

NG

>> GO TO 6.

6.

REPLACE ACCELERATOR PEDAL ASSEMBLY

1. Replace the accelerator pedal assembly.

2. Perform 

EC-128, "Accelerator Pedal Released Position Learning"

.

3. Perform 

EC-128, "Throttle Valve Closed Position Learning"

.

4. Perform 

EC-129, "Idle Air Volume Learning"

.

>> INSPECTION END

7.

CHECK THROTTLE POSITION SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Check harness continuity between electric throttle control actuator terminal 4 and ECM terminal 66.

Refer to Wiring Diagram.

4. Also check harness for short to ground and short to power.
OK or NG

OK

>> GO TO 8.

NG

>> Repair open circuit or short to ground or short to power in harness or connectors.

8.

CHECK THROTTLE POSITION SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Check harness continuity between ECM terminal 50 and electric throttle control actuator terminal 1, ECM

terminal 69 and electric throttle control actuator terminal 3.

Refer to Wiring Diagram.

2. Also check harness for short to ground and short to power.
OK or NG

OK

>> GO TO 9.

NG

>> Repair open circuit or short to ground or short to power in harness or connectors.

9.

CHECK THROTTLE POSITION SENSOR

Refer to 

EC-447, "Component Inspection"

.

OK or NG

OK

>> GO TO 11.

NG

>> GO TO 10.

10.

REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1. Replace the electric throttle control actuator.

2. Perform 

EC-128, "Throttle Valve Closed Position Learning"

.

3. Perform 

EC-129, "Idle Air Volume Learning"

.

>> INSPECTION END

11.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-39, "How to Check Terminal"

 and 

GI-42, "Intermittent Incident"

.

Continuity should exist.

Continuity should exist.

P2135 TP SENSOR

EC-447

< DTC/CIRCUIT DIAGNOSIS >

[VK56DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

>> INSPECTION END

Component Inspection

INFOID:0000000009886899

THROTTLE POSITION SENSOR

1. Reconnect all harness connectors disconnected.
2. Perform 

EC-128, "Throttle Valve Closed Position Learning"

.

3. Turn ignition switch ON.
4. Set selector lever to D position. 
5.  Check voltage between ECM terminals 50 (TP sensor 1 signal),

69 (TP sensor 2 signal) and ground under the following condi-

tions.

6. If NG, replace electric throttle control actuator and go to the next

step.

7. Perform 

EC-128, "Throttle Valve Closed Position Learning"

.

8. Perform 

EC-129, "Idle Air Volume Learning"

.

Terminal

Accelerator pedal

Voltage

50
(Throttle position sensor 1)

Fully released

More than 0.36V

Fully depressed

Less than 4.75V

69
 (Throttle position sensor 2)

Fully released

Less than 4.75V

Fully depressed

More than 0.36V

PBIB1530E

EC-448

< DTC/CIRCUIT DIAGNOSIS >

[VK56DE]

P2138 APP SENSOR

P2138 APP SENSOR

Component Description

INFOID:0000000009886900

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 potentiometers which transform the accelerator pedal

position into output voltage, and emit the voltage signal to the ECM.

In addition, these sensors detect the opening and closing speed of

the accelerator pedal and feed 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 the engine oper-

ation such as fuel cut. 

On Board Diagnosis Logic

INFOID:0000000009886901

This self-diagnosis has the one trip detection logic.

NOTE:

If DTC P2138 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to

EC-365

.

FAIL-SAFE MODE

When the malfunction is detected, ECM enters fail-safe mode and the MIL lights up.

DTC Confirmation Procedure

INFOID:0000000009886902

NOTE:

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-

ing the next step. 
1. Turn ignition swich OFF and wait at least 10 seconds.
2. Turn ignition swich ON.
3. Turn ignition swich OFF and wait at least 10 seconds.
TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 8V at idle.

1. Start engine and let it idle for 1 second.

2. Check DTC.

3. If DTC is detected, go to 

EC-449, "Diagnosis Procedure"

.

PBIB1741E

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P2138
2138

Accelerator pedal position 
sensor circuit range/per-
formance

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 and 2 circuit is open or 
shorted.)
(TP sensor circuit is shorted.)

• Accelerator pedal position sensor 1 and 2
• Electric throttle control actuator

(TP sensor)

Engine operating condition in fail-safe mode

The ECM controls the electric throttle control actuator in regulating the throttle opening in order for the idle position to be within +10 
degrees.
The ECM regulates the opening speed of the throttle valve to be slower than the normal condition.
So, the acceleration will be poor. 

 

 

 

 

 

 

 

Content   ..  284  285  286  287   ..