Nissan Frontier D22. Instruction — part 552
DTC P0031, P0032, P0051, P0052 HO2S1 HEATER
EC-1311
[VG33ER]
C
D
E
F
G
H
I
J
K
L
M
A
EC
●
Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread
Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.
Removal and Installation
UBS00DSV
HEATED OXYGEN SENSOR 1
Refer to
EM-80, "OUTER COMPONENT PARTS"
.
EC-1312
[VG33ER]
DTC P0034 SCB VALVE CONTROL SOLENOID VALVE
DTC P0034 SCB VALVE CONTROL SOLENOID VALVE
PFP:14110
Description
UBS00DSW
SYSTEM DESCRIPTION
This system controls supercharged air according to the engine operating conditions.
This control operation is accomplished through the ECM and the SCB valve control solenoid valve.
When the solenoid valve is ON, the SCB valve shuts. Then intake air is lead to supercharger, and super-
charged air is sent to the cylinder.
When the solenoid valve is OFF, the SCB valve opens. Then intake air is sent to the cylinder directly.
When the ECM detects any of the following conditions, current does not flow through the solenoid valve.
●
Engine stopped
●
Engine starting
●
High-load, high-speed engine operation
●
Excessively low engine coolant temperature
●
Mass air flow sensor malfunction
●
Engine coolant temperature sensor malfunction
●
Throttle position sensor malfunction
COMPONENT DESCRIPTION
SCB Valve Control Solenoid Valve
The SCB valve control solenoid valve responds to signals from the
ECM.
When the ECM sends an OFF signal, the solenoid valve is bypassed
to apply intake manifold vacuum to the SCB valve actuator. This
operation opens the SCB valve. When the ECM sends ON (ground)
signal, the SCB valve opens or closes depend on the throttle valve
position, regarding to the pressure difference between atmosphere
and throttle body.
CONSULT-II Reference Value in Data Monitor Mode
UBS00DSX
Specification data are reference values.
Sensor
Input Signal to ECM
ECM function
Actuator
Camshaft position sensor
Engine speed
Supercharged
air control
SCB valve control solenoid valve
Mass air flow sensor
Amount of intake air
Engine coolant temperature sensor
Engine coolant temperature
Ignition switch
Start signal
Throttle position sensor
Throttle position
SEC313C
LEC806
DTC P0034 SCB VALVE CONTROL SOLENOID VALVE
EC-1313
[VG33ER]
C
D
E
F
G
H
I
J
K
L
M
A
EC
On Board Diagnosis Logic
UBS00DSY
DTC Confirmation Procedure
UBS00DSZ
WITH CONSULT-II
1.
Turn ignition switch ON.
2.
Select “DATA MONITOR” mode with CONSULT-II.
3.
Wait at least 10 seconds.
4.
If 1st trip DTC is detected, go to
WITH GST
Follow the procedure “WITH CONSULT-II” above.
MONITOR ITEM
CONDITION
SPECIFICATION
SCB/V CON S/V
●
More than 5 seconds after turning ignition switch ON (Engine
stopped)
OFF
●
Engine speed: Idle
ON
DTC No.
Trouble diagnosis name
DTC detection condition
Possible cause
P0034
SCB valve control solenoid valve cir-
cuit problem
Improper voltage signal from SCB
valve control solenoid valve is sent
to ECM.
●
Harness or connectors (The SCB
valve control solenoid valve circuit
is open or shouted)
●
SCB valve control solenoid valve.
SEF058Y
EC-1314
[VG33ER]
DTC P0034 SCB VALVE CONTROL SOLENOID VALVE
Wiring Diagram
UBS00DT0
BBWA1105E
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст