Infiniti M35/M45 Y50. Manual — part 604
DTC P0031, P0032, P0051, P0052 A/F SENSOR 1 HEATER
EC-889
[VK45DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
5.
CHECK A/F SENSOR 1 HEATER
Refer to
EC-889, "Component Inspection"
OK or NG
OK
>> GO TO 6.
NG
>> GO TO 7.
6.
CHECK INTERMITTENT INCIDENT
Perform
EC-857, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
OK or NG
OK
>> GO TO 7.
NG
>> Repair or replace.
7.
REPLACE AIR FUEL RATIO (A/F) SENSOR 1
Replace air fuel ratio (A/F) sensor 1.
CAUTION:
●
Discard any A/F sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a
hard surface such as a concrete floor; use a new one.
●
Before installing new A/F sensor, clean exhaust system threads using Oxygen Sensor Thread
Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.
>> INSPECTION END
Component Inspection
NBS005BN
AIR FUEL RATIO (A/F) SENSOR 1 HEATER
Check resistance between terminals 3 and 4.
Check continuity between terminals 3 and 1, 2, 5, 6, terminals 4 and
1, 2, 5, 6.
If NG, replace the A/F sensor 1.
CAUTION:
●
Discard any A/F sensor which has been dropped from a
height of more than 0.5 m (19.7 in) onto a hard surface such
as a concrete floor; use a new one.
●
Before installing new A/F sensor, clean exhaust system
threads using Heated Oxygen Sensor Thread Cleaner tool
J-43897-18 or J-43897-12 and approved anti-seize lubricant.
Removal and Installation
NBS005BO
AIR FUEL RATIO (A/F) SENSOR 1
Refer to
EM-183, "EXHAUST MANIFOLD AND THREE WAY CATALYST"
Resistance: 2.3 - 4.3
Ω
[at 25
°
C (77
°
F)]
Continuity should not exist.
PBIB1684E
EC-890
[VK45DE]
DTC P0037, P0038, P0057, P0058 HO2S2 HEATER
DTC P0037, P0038, P0057, P0058 HO2S2 HEATER
PFP:226A0
Description
NBS005BP
SYSTEM DESCRIPTION
The ECM performs ON/OFF control of the heated oxygen sensor 2 heater corresponding to the engine speed,
amount of intake air and engine coolant temperature.
OPERATION
CONSULT-II Reference Value in Data Monitor Mode
NBS005BQ
Specification data are reference values.
On Board Diagnosis Logic
NBS005BR
Sensor
Input signal to ECM
ECM function
Actuator
Camshaft position sensor (PHASE)
Crankshaft position sensor (POS)
Engine speed
Heated oxygen sensor 2
heater control
Heated oxygen sensor 2 heater
Engine coolant temperature sensor
Engine coolant temperature
Mass air flow sensor
Amount of intake air
Engine speed rpm
Heated oxygen sensor 2 heater
Above 3,600
OFF
Below 3,600 rpm after the following conditions are met.
●
Engine: After warming up
●
Keeping the engine speed between 3,500 and 4,000 rpm for 1
minute and at idle for 1 minute under no load
ON
MONITOR ITEM
CONDITION
SPECIFICATION
HO2S2 HTR (B1)
HO2S2 HTR (B2)
●
Engine speed: Below 3,600 rpm after the following conditions are met.
–
Engine: After warming up
–
Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and at
idle for 1 minute under no load
ON
●
Engine speed: Above 3,600 rpm
OFF
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0037
0037
(Bank 1)
Heated oxygen sensor 2
heater control circuit low
The current amperage in the heated oxygen
sensor 2 heater circuit is out of the normal
range.
(An excessively low voltage signal is sent to
ECM through the heated oxygen sensor 2
heater.)
●
Harness or connectors
(The heated oxygen sensor 2 heater circuit
is open or shorted.)
●
Heated oxygen sensor 2 heater
P0057
0057
(Bank 2)
P0038
0038
(Bank 1)
Heated oxygen sensor 2
heater control circuit high
The current amperage in the heated oxygen
sensor 2 heater circuit is out of the normal
range.
(An excessively high voltage signal is sent
to ECM through the heated oxygen sensor 2
heater.)
●
Harness or connectors
(The heated oxygen sensor 2 heater circuit
is shorted.)
●
Heated oxygen sensor 2 heater
P0058
0058
(Bank 2)
DTC P0037, P0038, P0057, P0058 HO2S2 HEATER
EC-891
[VK45DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
DTC Confirmation Procedure
NBS005BS
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 between 11V and 16V at
idle.
WITH CONSULT-II
1.
Turn ignition switch ON and select “DATA MONITOR” mode with
CONSULT-II.
2.
Wait at least 5 seconds.
3.
If 1st trip DTC is detected, go to
EC-895, "Diagnostic Procedure"
.
WITH GST
Follow the procedure “WITH CONSULT-II” above.
SEF174Y
EC-892
[VK45DE]
DTC P0037, P0038, P0057, P0058 HO2S2 HEATER
Wiring Diagram
NBS005BT
BANK 1
TBWT1014E
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст