Nissan Primera P12. Instruction — part 326
DTC P0234 TC SYSTEM
EC-489
[YD (WITHOUT EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
7.
CHECK TURBOCHARGER BOOST CONTROL ACTUATOR
1.
Turn ignition switch OFF.
2.
Install a vacuum pump to turbocharger boost control actuator.
3.
Make sure that the turbocharger boost control actuator rod
moves smoothly when applying vacuum of -53.3kPa (-533mbar,
-400mmHg, -15.75inHg) and releasing it.
OK or NG
OK
>> GO TO 8.
NG
>> Replace turbocharger assembly.
8.
CHECK TURBOCHARGER BOOST SENSOR
Refer to
EC-494, "Component Inspection"
.
OK or NG
OK
>> GO TO 9.
NG
>> Replace turbocharger boost sensor.
9.
CHECK INTERMITTENT INCIDENT
Refer to
EC-408, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
.
>> INSPECTION END
Component Inspection
EBS0156O
TURBOCHARGER BOOST CONTROL SOLENOID VALVE
1.
Disconnect turbocharger boost control solenoid valve harness
connector.
2.
Apply 12V direct current between turbocharger boost control solenoid valve terminals.
3.
Check air passage continuity of turbocharger boost control sole-
noid valve under the following conditions.
Operation takes less than 1 second.
If NG, replace turbocharger boost control solenoid valve.
MBIB1022E
MBIB0921E
CONDITIONS
Air passage continuity
between A and B
Air passage continuity
between A and C
12V direct current supply
between terminals 1 and 2
Yes
No
No supply
No
Yes
MBIB0996E
EC-490
[YD (WITHOUT EURO-OBD)]
DTC P0237, P0238 TC BOOST SENSOR
DTC P0237, P0238 TC BOOST SENSOR
PFP:22365
Component Description
EBS0156P
The turbocharger boost sensor detects pressure in the exit side of
the charge air cooler. The sensor output voltage to the ECM
increases as pressure increases.
CONSULT-II Reference Value in Data Monitor Mode
EBS0156Q
Specification data are reference values.
ECM Terminals and Reference Value
EBS0156R
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 damage the
ECM's transistor. Use a ground other than ECM terminals, such as the ground.
MBIB0614E
MBIB0899E
MONITOR ITEM
CONDITION
SPECIFICATION
INT/M PRES SE [kPa]
●
Engine: After warming up
●
Air conditioner switch: OFF
●
Shift lever: Neutral position
●
No-load
Idle
Approx. 100 kPa
2,800 rpm
Approx. 126 kPa
4,000 rpm
Approx. 106 kPa
TERMI-
NAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA
(DC Voltage)
52
Y
Turbocharger boost sensor
[Engine is running]
●
Warm-up condition
●
Idle speed
2.3 - 2.6V
[Engine is running]
●
Warm-up condition
●
Engine speed is 2,000 rpm
2.5 - 2.8V
64
W
Turbocharger boost sensor
power supply
[Ignition switch ON]
Approximately 5.3V
71
B
Turbocharger boost sensor
ground
[Ignition switch ON]
Approximately 0.3V
DTC P0237, P0238 TC BOOST SENSOR
EC-491
[YD (WITHOUT EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
On Board Diagnosis Logic
EBS0156S
The MI will not light up for these self-diagnoses.
DTC Confirmation Procedure
EBS0156T
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.
WITH CONSULT-II
1.
Turn ignition switch ON.
2.
Select “DATA MONITOR” mode with CONSULT-II.
3.
Wait at least 5 seconds.
4.
If DTC is detected, go to
EC-493, "Diagnostic Procedure"
.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0237
Turbocharger boost sensor
circuit low input
An excessively low voltage from the sensor is
sent to ECM.
●
Harness or connectors
(The sensor circuit is open or
shorted.)
●
Turbocharger boost sensor
P0238
Turbocharger boost sensor
circuit high input
An excessively high voltage from the sensor is
sent to ECM.
SEF817Y
EC-492
[YD (WITHOUT EURO-OBD)]
DTC P0237, P0238 TC BOOST SENSOR
Wiring Diagram
EBS0156U
MBWA0378E
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