Infiniti F50. Manual - part 396

 

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Infiniti F50. Manual - part 396

 

 

DTC P0133, P0153 HO2S1

EC-225

C

D

E

F

G

H

I

J

K

L

M

A

EC

Specification data are reference values and are measured between each terminal and ground.

CAUTION:

Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

114

R/L

Heated oxygen sensor 1 
(bank 1)

[Engine is running]

Warm-up condition

Engine speed is 2,000 rpm.

0 - Approximately 1.0V
(Periodically change)

EC-226

DTC P0133, P0153 HO2S1

BANK 2

TBWM0144E

DTC P0133, P0153 HO2S1

EC-227

C

D

E

F

G

H

I

J

K

L

M

A

EC

Specification data are reference values and are measured between each terminal and ground.

CAUTION:

Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.

Diagnostic Procedure

ABS002H0

1. 

RETIGHTEN GROUND SCREWS

1.

Turn ignition switch “OFF”.

2.

Loosen and retighten engine ground screws.

>> GO TO 2.

2. 

RETIGHTEN HEATED OXYGEN SENSOR 1

Loosen and retighten heated oxygen sensor 1.

>> GO TO 3.

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

115

L/W

Heated oxygen sensor 1 
(bank 2)

[Engine is running]

Warm-up condition

Engine speed is 2,000 rpm.

0 - Approximately 1.0V
(Periodically change)

PBIB0011E

Tightening torque: 40 - 50 N·m (4.1 - 5.1 kg-m, 30 - 37 ft-lb)

PBIB0016E

EC-228

DTC P0133, P0153 HO2S1

3. 

CHECK FOR EXHAUST GAS LEAK

1.

Start engine and run it at idle.

2.

Listen for an exhaust gas leak before three way catalyst (Manifold).

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace.

4. 

CHECK FOR INTAKE AIR LEAK

Listen for an intake air leak after the mass air flow sensor.

OK or NG

OK

>> GO TO 5.

NG

>> Repair or replace.

SEC502D

 

 

 

 

 

 

 

Content   ..  394  395  396  397   ..