Infiniti QX4 (R50). Manual — part 245
ECM Terminals and Reference Value
=NBEC0693
Specification data are reference values, and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring voltage. Doing so may result in damage to the
ECM’s transistor. Use a ground other than the ECM terminals, such as the ground.
TERMI-
NAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
13
OR/B
Intake valve timing
control solenoid valves
(RH)
[Engine is running]
I
Warm-up condition
I
Idle speed
Battery voltage
[Engine is running]
I
Warm-up condition
I
Engine speed is 2,000 rpm.
7 - 8V
SEF350Z
15
P/L
Intake valve timing
control solenoid valves
(LH)
[Engine is running]
I
Warm-up condition
I
Idle speed
Battery voltage
[Engine is running]
I
Warm-up condition
I
Engine speed is 2,000 rpm.
7 - 8V
SEF350Z
79
Y/G
Intake valve timing
control position sen-
sors (RH)
[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
GI
MA
EM
LC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P1110 (RIGHT, -B1), P1135 (LEFT, -B2) INTAKE VALVE TIMING CONTROL
ECM Terminals and Reference Value
EC-447
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
NBEC0694
Malfunction is detected when:
(Malfunction A)
The alignment of the intake valve timing control has been misreg-
istered.
(Malfunction B)
There is a gap between angle of target and phase-control angle
degree.
FAIL-SAFE MODE
NBEC0694S01
When malfunction A or B is detected, the ECM enters fail-safe
mode and the MIL lights up.
Detected items
Engine operating condition in fail-safe mode
Intake valve timing control
The signal is not energized to the solenoid valve and the valve control does not function.
Possible Cause
NBEC0695
MALFUNCTION A OR B
NBEC0695S01
I
Harness or connectors
(Intake valve timing control position sensor circuit is open or
shorted.) Refer to EC-482.
I
Crankshaft position sensor (REF)
I
Crankshaft position sensor (POS)
I
Camshaft position sensor (PHASE)
DTC P1110 (RIGHT, -B1), P1135 (LEFT, -B2) INTAKE VALVE TIMING CONTROL
ECM Terminals and Reference Value (Cont’d)
EC-448
DTC Confirmation Procedure
NBEC0696
CAUTION:
Always drive at a safe speed.
NOTE:
I
If both DTC P1111 (B1), P1136 (B2) or P1140 (B1), P1145
(B2) and P1110 (B1), P1135 (B2) are displayed, perform
trouble diagnosis for “DTC P1111 (B1), P1136 (B2) or
P1140 (B1), P1145 (B2)” first. (See EC-451, 482.)
I
If “DTC Confirmation Procedure” has been previously
conducted, always turn ignition switch “OFF” and wait at
least 10 seconds before conducting the next test.
SEF353Z
PROCEDURE FOR MALFUNCTION A
NBEC0696S01
With CONSULT-II
NBEC0696S0101
1)
Turn ignition switch “ON”.
2)
Select “DATA MONITOR” mode with CONSULT-II.
3)
Maintain the following conditions for at least 10 consecutive
seconds.
ENG SPEED
More than 2,000 rpm
COOLANT TEMPS
More than 70°C (158°F)
Selector lever
1st position
Driving location
Driving vehicle uphill
(Increased engine load will help main-
tain the driving conditions required for
this test.)
4)
Maintain the following conditions for at least 20 consecutive
seconds.
ENG SPEED
Idle
COOLANT TEMPS
More than 70°C (158°F)
Selector lever
“P” or “N” position
5)
If 1st trip DTC is detected, go to “P1140, P1145 INTAKE
VALVE TIMING CONTROL POSITION SENSOR”. Refer to
EC-482.
With GST
NBEC0696S0102
Follow the procedure “With CONSULT-II” above.
GI
MA
EM
LC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P1110 (RIGHT, -B1), P1135 (LEFT, -B2) INTAKE VALVE TIMING CONTROL
DTC Confirmation Procedure
EC-449
SEF353Z
PROCEDURE FOR MALFUNCTION B
=NBEC0696S02
With CONSULT-II
NBEC0696S0201
1)
Turn ignition switch “ON”.
2)
Select “DATA MONITOR” mode with CONSULT-II.
3)
Maintain the following conditions for at least 20 consecutive
seconds.
ENG SPEED
2,000 - 3,000 rpm (A constant rotation
is maintained.)
COOLANT TEMPS
70 - 90°C (158 - 194°F)
Selector lever
1st or position
Driving location uphill
Driving vehicle uphill
(Increased engine load will help main-
tain the driving conditions required for
this test.)
4)
If 1st trip DTC is detected, go to “P1140, P1145 INTAKE
VALVE TIMING CONTROL POSITION SENSOR”. Refer to
EC-482.
With GST
NBEC0696S0202
Follow the procedure “With CONSULT-II” above.
DTC P1110 (RIGHT, -B1), P1135 (LEFT, -B2) INTAKE VALVE TIMING CONTROL
DTC Confirmation Procedure (Cont’d)
EC-450
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