Infiniti M45 (Y34). Manual - part 400

 

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Infiniti M45 (Y34). Manual - part 400

 

 

DTC P0182, P0183 FTT SENSOR

EC-289

C

D

E

F

G

H

I

J

K

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A

EC

Wiring Diagram

ABS002IC

TBWA0280E

EC-290

DTC P0182, P0183 FTT SENSOR

Diagnostic Procedure

ABS002ID

1. 

CHECK GROUND CONNECTIONS

1.

Turn ignition switch OFF.

2.

Loosen and retighten two ground screws. 
Refer to 

EC-141, "Ground Inspection"

 .

OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace ground connections.

2. 

CHECK FUEL TANK TEMPERATURE SENSOR POWER SUPPLY CIRCUIT

1.

Disconnect “fuel level sensor unit and fuel pump” harness con-
nector.

2.

Turn ignition switch ON.

3.

Check voltage between “fuel level sensor unit and fuel pump”
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 B61, B261

Harness connectors B211, M141

Harness connectors M135, F105

Harness for open or short between ECM and “fuel level sensor unit and fuel pump”

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

PBIB1118E

PBIB1127E

Voltage: Approximately 5V

PBIB0316E

DTC P0182, P0183 FTT SENSOR

EC-291

C

D

E

F

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EC

4. 

CHECK FUEL TANK TEMPERATURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check harness continuity between “fuel level sensor unit and fuel pump” terminal 2 and ECM terminal 89.
Refer to Wiring Diagram.

4.

Also check harness for short to power.

OK or NG

OK

>> GO TO 6.

NG

>> GO TO 5.

5. 

DETECT MALFUNCTIONING PART

Check the following.

Harness connectors B61, B261

Harness connectors B211, M141

Harness connectors M135, F105

Joint connector-30

Harness for open or short between ECM and “fuel level sensor unit and fuel pump”

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

6. 

CHECK FUEL TANK TEMPERATURE SENSOR

Refer to 

EC-291, "Component Inspection"

 .

OK or NG

OK

>> GO TO 7.

NG

>> Replace fuel level sensor unit.

7. 

CHECK INTERMITTENT INCIDENT

Refer to 

EC-132, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

 .

>> INSPECTION END

Component Inspection

ABS002IE

FUEL TANK TEMPERATURE SENSOR

1.

Remove fuel level sensor unit.

2.

Check resistance between “fuel level sensor unit and fuel pump”
terminals 4 and 2 by heating with hot water or heat gun as
shown in the figure.

Removal and Installation

ABS002IF

FUEL TANK TEMPERATURE SENSOR

Refer to 

FL-3, "FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY"

 .

Continuity should exist.

Temperature 

°

C (

°

F)

Resistance k

20 (68)

2.3 - 2.7

50 (122)

0.79 - 0.90

PBIB0200E

EC-292

DTC P0222, P0223 TP SENSOR

DTC P0222, P0223 TP SENSOR

PFP:16119

Component Description

ABS002IG

Electric throttle control actuator consists of throttle control motor,
acceleration 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

ABS002IH

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

ABS002II

NOTE:
If DTC P0222, P0223 is displayed with DTC P1229, first perform the trouble diagnosis for DTC P1229.
Refer to 

EC-531

 .

These self-diagnoses have the one trip detection logic.

FAIL-SAFE MODE

When the malfunction is detected, 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

P0222
0222

Throttle position sensor 1 
circuit low input

An excessively low voltage from the TP sensor 1 
is sent to ECM.

Harness or connectors
(The TP sensor 1 circuit is open or 
shorted.)

Electric throttle control actuator
(TP sensor 1)

P0223
0223

Throttle position sensor 1 
circuit high input

An excessively high voltage from the TP sensor 1 
is sent to ECM.

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. 

 

 

 

 

 

 

 

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