Infiniti M45 (Y34). Manual - part 484

DTC P2127, P2128 APP SENSOR

EC-625

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2. 

CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT

1.

Disconnect electric throttle control actuator harness connector.

2.

Turn ignition switch ON.

3.

Check voltage between electric throttle control actuator terminal
10 and ground with CONSULT-II or tester.

OK or NG

OK

>> GO TO 3.

NG

>> Repair open circuit or short to ground or short to power

in harness or connectors.

3. 

CHECK APP SENSOR 2 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 12 and ECM terminal 100.
Refer to Wiring Diagram.

4.

Also check harness for short to ground and short to power.

OK or NG

OK

>> GO TO 4.

NG

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

4. 

CHECK APP SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

Check harness continuity between ECM terminal 117 and electric throttle control actuator terminal 11.
Refer to Wiring Diagram.

2.

Also check harness for short to ground and short to power.

OK or NG

OK

>> GO TO 5.

NG

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

5. 

CHECK APP SENSOR

Refer to 

EC-626, "Component Inspection"

 .

OK or NG

OK

>> GO TO 7.

NG

>> GO TO 6.

PBIB0015E

Voltage: Approximately 2.5V

PBIB1148E

Continuity should exist.

Continuity should exist.

EC-626

DTC P2127, P2128 APP SENSOR

6. 

REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1.

Replace the electric throttle control actuator.

2.

Perform 

EC-44, "Accelerator Pedal Released Position Learning"

 .

3.

Perform 

EC-44, "Throttle Valve Closed Position Learning"

 .

4.

Perform 

EC-44, "Idle Air Volume Learning"

 .

>> INSPECTION END

7. 

CHECK INTERMITTENT INCIDENT

Refer to 

EC-132, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

 .

>> INSPECTION END

Component Inspection

ABS002T0

ACCELERATOR PEDAL POSITION SENSOR

1.

Reconnect all harness connectors disconnected.

2.

Turn ignition switch ON.

3.

Check voltage between ECM terminals 87 (APP sensor 1 sig-
nal), 117 (APP sensor 2 signal) and ground under the following
conditions.

4.

If NG, replace accelerator pedal assembly.

5.

Perform 

EC-44, "Accelerator Pedal Released Position Learning"

 .

6.

Perform 

EC-44, "Throttle Valve Closed Position Learning"

 .

7.

Perform 

EC-44, "Idle Air Volume Learning"

 .

Removal and Installation

ABS002T1

ACCELERATOR PEDAL

Refer to 

ACC-2, "ACCELERATOR CONTROL SYSTEM"

 .

Terminal

Accelerator pedal

Voltage

87
 (Accelerator pedal position 
sensor 1)

Fully released

More than 0.36V

Fully depressed

Less than 4.75V

117
(Accelerator pedal position 
sensor 2)

Fully released

More than 0.18V

Fully depressed

Less than 2.37V

PBIB0184E

DTC P2135 TP SENSOR

EC-627

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DTC P2135 TP SENSOR

PFP:16119

Component Description

ABS002T2

Electric throttle control actuator consists of throttle control motor,
accelerator pedal position sensor, throttle position sensor, etc. The
throttle position sensor responds to the throttle valve movement. 
The throttle position sensor has the two sensors. These sensors are
a kind of potentiometers which transform the throttle valve position
into output voltage, and emit the voltage signal to the ECM. In addi-
tion, these sensors detect the opening and closing speed of the
throttle valve and feed the voltage signals to the ECM. The ECM
judges the current opening angle of the throttle valve from these sig-
nals and the ECM controls the throttle control motor to make the
throttle valve opening angle properly in response to driving condi-
tion.

CONSULT-II Reference Value in Data Monitor Mode

ABS002T3

Specification data are reference values.

*: Throttle position sensor 2 signal is converted by ECM internally. Thus, it differs from ECM terminal voltage signal.

On Board Diagnosis Logic

ABS002T4

NOTE:
If DTC P2135 is displayed with DTC P1229, first perform the trouble diagnosis for DTC P1229.
Refer to 

EC-531

 .

This self-diagnosis has the one trip detection logic.

FAIL-SAFE MODE

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

PBIB0145E

MONITOR ITEM

CONDITION

SPECIFICATION

THRTL SEN 1
THRTL SEN 2*

●

Ignition switch: ON
(Engine stopped)

Accelerator pedal: Fully released

More than 0.36V

●

Selector lever: D

Accelerator pedal: Fully depressed

Less than 4.75V

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P2135
2135

Throttle position sensor 
circuit range/performance 
problem

Rationally incorrect voltage is sent to ECM 
compared with the signals from TP sensor 1 
and TP sensor 2.

●

Harness or connector
(The TP sensor 1 and 2 circuit is open or 
shorted.)

●

Electric throttle control actuator
(TP sensor 1 and 2)

Engine operation 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. 

EC-628

DTC P2135 TP SENSOR

DTC Confirmation Procedure

ABS002T5

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10V at idle.

 WITH CONSULT-II

1.

Turn ignition switch ON.

2.

Select “DATA MONITOR” mode with CONSULT-II.

3.

Start engine and let it idle for 1 second.

4.

If DTC is detected, go to 

EC-630, "Diagnostic Procedure"

 .

 WITH GST

Follow the procedure WITH CONSULT-II above.

SEF058Y