Nissan Primera P11. Manual — part 181
Component Inspection
NCEC0286
IACV-AAC VALVE
NCEC0286S01
1)
Disconnect IACV-AAC valve harness connector.
2)
Check IACV-AAC valve resistance.
Condition
Resistance
Terminal 2 and terminals 1, 3
20 - 24
Ω
[at 20°C (68°F)]
Terminal 5 and terminals 4, 6
3)
Reconnect IACV-AAC valve harness connector.
4)
Remove idle air adjusting unit assembly (IACV-AAC valve is
built-in) from engine.
(The IACV-AAC valve harness connector should remain con-
nected.)
5)
Turn ignition switch “ON” and “OFF”, and ensure the IACV-
AAC valve shaft smoothly moves forward and backward,
according to the ignition switch position.
If NG, replace the IACV-AAC valve.
SEF353QA
SEF089X
DTC P0505 IDLE AIR CONTROL VALVE (IACV) —
AUXILIARY AIR CONTROL (AAC) VALVE
QG16
I
18DE
Component Inspection
EC-281
Component Description
NCEC0295
The ECM consists of a microcomputer, diagnostic test mode
selector, and connectors for signal input and output and for power
supply. The ECM controls the engine.
On Board Diagnosis Logic
NCEC0296
DTC No.
Malfunction is detected when ...
Check Items (Possible Cause)
P0605
0605
I
ECM calculation function is malfunctioning.
I
ECM
DTC Confirmation Procedure
NCEC0297
NOTE:
If “DTC Confirmation Procedure” has been previously conducted,
always turn ignition switch “OFF” and wait at least 9 seconds
before conducting the next test.
With CONSULT-II
1)
Turn ignition switch “ON”.
2)
Select “DATA MONITOR” mode with CONSULT-II.
3)
Start engine.
4)
Run engine for at least 1 second at idle speed.
5)
If 1st trip DTC is detected, go to “Diagnostic Procedure”, EC-
QG-282.
With GST
Follow the procedure “With CONSULT-II” above.
Diagnostic Procedure
=NCEC0298
1
INSPECTION START
With CONSULT-II
1. Turn ignition switch “ON”.
2. Select “SELF DIAG RESULTS” mode with CONSULT-II.
3. Touch “ERASE”.
4. Perform “DTC Confirmation Procedure”.
See previous page.
5. Is the 1st trip DTC P0605 displayed again?
With GST
1. Turn ignition switch “ON”.
2. Select MODE 4 with GST.
3. Touch “ERASE”.
4. Perform “DTC Confirmation Procedure”.
See previous page.
5. Is the 1st trip DTC P0605 displayed again?
Yes or No
Yes
©
GO TO 2.
No
©
INSPECTION END
SEF093X
NEF068A
DTC P0605 ECM
QG16
I
18DE
Component Description
EC-282
2
REPLACE ECM
1. Replace ECM.
2. Perform initialization of NATS (NISSAN ANTI-THEFT SYSTEM) system and registration of all NATS ignition key IDs.
Refer to “NATS (NISSAN ANTI-THEFT SYSTEM)”, EC-QG-45.
3. Perform “Idle Air Volume Learning”, EC-QG-33.
Which is the result CMPLT or INCMP?
CMPLT or INCMP
CMPLT
©
INSPECTION END
INCMP
©
Follow the construction of “Idle Air Volume Learning”.
DTC P0605 ECM
QG16
I
18DE
Diagnostic Procedure (Cont’d)
EC-283
Component Description
NCEC0513
The valve timing control system is utilized to control intake valve
opening and closing timing. Engine coolant temperature signals,
engine speed and throttle position are used to determine intake
valve timing.
The intake camshaft sprocket position is regulated by oil pressure
controlled by the intake valve timing control.
When ECM sends ON signal to intake valve timing control solenoid
valve, oil pressure is transmitted to camshaft sprocket. Then, intake
side camshaft is advanced.
Operation
NCEC0514
Engine operating condition
Intake valve tim-
ing control sole-
noid valve
Intake valve
opening and
closing time
Valve overlap
Engine coolant
temperature
Engine speed
B/FUEL SCHDL
Neutral switch
20°C (68°F) -
70°C (158°F)
1,150 - 4,600
rpm
Above 3 msec
OFF
ON
Advance
Increased
Above 70°C
(158°F)
Above 7 msec
Conditions other than those above
OFF
Normal
Normal
CONSULT-II Reference Value in Data Monitor
Mode
NCEC0515
MONITOR ITEM
CONDITION
SPECIFICATION
INT/V SOL-B1
I
Engine: After warming up
Idle
OFF
Revving engine with full throttle
opening (Under 4,600 rpm)
ON
ECM Terminals and Reference Value
NCEC0516
Specification data are reference values and are measured between each terminal and engine 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)
1
Y/R
Intake valve timing control
solenoid valve
Ignition “ON”
BATTERY VOLTAGE
(11 - 14V)
On Board Diagnosis Logic
NCEC0517
DTC No.
Malfunction is detected when ...
Check Items (Possible Cause)
P1111
1111
I
An improper voltage signal is entered to ECM through
intake valve timing control solenoid valve.
I
Harness or connectors
(The intake valve timing control solenoid valve
circuit is open or shorted.)
I
Intake valve timing control solenoid valve
SEF095X
DTC P1111 INTAKE VALVE TIMING CONTROL
SOLENOID VALVE
QG16
I
18DE
Component Description
EC-284
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