Infiniti QX4 (R50). Manual — part 254
TERMI-
NAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
89
OR
Intake valve timing
control position sen-
sors (LH)
[Engine is running]
I
Warm-up condition
I
Idle speed
Approximately 0.5V
SEF351Z
[Engine is running]
I
Warm-up condition
I
Engine speed is 2,000 rpm.
Approximately 0.5V
SEF352Z
On Board Diagnosis Logic
NBEC0708
Malfunction is detected when an excessively high or low voltage
from the sensor is sent to ECM.
Possible Cause
NBEC0709
I
Harness or connectors
(Intake valve timing control position sensor circuit is open or
shorted)
I
Intake valve timing control position sensor.
I
Crankshaft position sensor (REF)
I
Crankshaft position sensor (POS)
I
Camshaft position sensor (PHASE)
SEF353Z
DTC Confirmation Procedure
NBEC0710
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
NBEC0710S01
1)
Turn ignition switch “ON”.
2)
Select “DATA MONITOR” mode with CONSULT-II.
3)
Maintain the following conditions for at least 10 seconds.
GI
MA
EM
LC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P1140 (RIGHT, -B1), P1145 (LEFT, -B2) INTAKE VALVE TIMING CONTROL
POSITION SENSOR (CIRCUIT)
ECM Terminals and Reference Value (Cont’d)
EC-483
Engine speed
More than Idle speed
Selector lever
“P” or “N” position
4)
If 1st trip DTC is detected, go to “Diagnostic Procedure”,
EC-487.
WITH GST
NBEC0710S02
Follow the procedure “With CONSULT-II” above.
DTC P1140 (RIGHT, -B1), P1145 (LEFT, -B2) INTAKE VALVE TIMING CONTROL
POSITION SENSOR (CIRCUIT)
DTC Confirmation Procedure (Cont’d)
EC-484
Wiring Diagram
NBEC0711
RIGHT BANK
NBEC0711S01
MEC987C
GI
MA
EM
LC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P1140 (RIGHT, -B1), P1145 (LEFT, -B2) INTAKE VALVE TIMING CONTROL
POSITION SENSOR (CIRCUIT)
Wiring Diagram
EC-485
LEFT BANK
NBEC0711S02
MEC986C
DTC P1140 (RIGHT, -B1), P1145 (LEFT, -B2) INTAKE VALVE TIMING CONTROL
POSITION SENSOR (CIRCUIT)
Wiring Diagram (Cont’d)
EC-486
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