Infiniti Q45 (FY33). Manual — part 241
SEF809W
EVAP canister purge control valve
Check EVAP canister purge control valve as follows:
1.
Blow air in port
q
A
and
q
C
, then ensure that there is no leak-
age.
2.
Blow air in port
q
B
, then ensure that there is a resistance to flow
out of port
q
C
.
3.
Apply vacuum to port
q
A
. [Approximately −13.3 to −20.0 kPa
(−100 to −150 mmHg, −3.94 to −5.91 inHg)]
Blow air in port
q
C
and ensure free flow out of port
q
B
.
SEC050C
AEC783A
EVAP canister vent control valve
Check air passage continuity.
Perform “VENT CONTROL/V” in “ACTIVE TEST” mode with
CONSULT-II.
Condition
VENT CONTROL/V
Air passage continuity
between
q
A
and
q
B
ON
No
OFF
Yes
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ OR ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Condition
Air passage continuity
between
q
A
and
q
B
12V direct current supply between ter-
minals
q
1
and
q
2
No
No supply
Yes
If NG or operation takes more than 1 second, clean valve using air
blower or replace as necessary.
If the portion
q
B
is rusted, replace EVAP canister vent control
valve.
Make sure new O-ring is installed properly.
SEF829T
Water separator
1.
Check visually for insect’s nest in the water separator air inlet.
2.
Check visually for cracks or flaws in the appearance.
3.
Check visually for cracks or flaws in the hose.
4.
Check that
q
A
and
q
C
are not clogged by blowing air into
q
B
with
q
A
, and then
q
C
plugged.
5.
In case of NG in items 2 - 4, replace the parts.
NOTE:
Do not disassemble water separator.
GI
MA
EM
LC
FE
AT
PD
FA
RA
BR
ST
RS
BT
HA
EL
IDX
TROUBLE DIAGNOSIS FOR DTC P1493
Evaporative Emission (EVAP) Canister Purge
Control Valve/Solenoid Valve (Cont’d)
EC-493
SEF146TA
Park/Neutral Position (PNP) Switch
COMPONENT DESCRIPTION
When the gear position is in “P” or “N”, park/neutral position (PNP)
switch is “ON”. ECM detects the position because the continuity of
the line (the “ON” signal) exists.
The PNP switch assembly also includes a transmission range
switch to detect the selector lever position.
CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE
Specification data are reference values.
MONITOR ITEM
CONDITION
SPECIFICATION
P/N POSI SW
I
Ignition switch: ON
Shift lever: “P” or “N”
ON
Except above
OFF
ECM TERMINALS AND REFERENCE VALUE
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 ECM terminals such as the body ground.
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA
(DC voltage)
101
G/OR
PNP switch
Ignition switch “ON”
Gear position is “N” or “P”.
Approximately 0V
Ignition switch “ON”
Except the above gear position
Approximately 5V
ON BOARD DIAGNOSIS LOGIC
Diagnostic Trouble
Code No.
Malfunction is detected when .
Check Items
(Possible Cause)
P1706
1003
I
The signal of the park/neutral position switch is not
changed in the process of engine starting and driv-
ing.
I
Harness or connectors
(The PNP switch circuit is open or shorted.)
I
Harness or connectors
(The park/neutral position relay circuit is open or
shorted.)
I
PNP switch
I
Park/neutral position relay
TROUBLE DIAGNOSIS FOR DTC P1706
EC-494
SEF281Y
SEF212Y
SEF429U
DIAGNOSTIC TROUBLE CODE CONFIRMATION
PROCEDURE
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCE-
DURE” has been previously conducted, always turn ignition
switch “OFF” and wait at least 5 seconds before conducting
the next test.
1) Turn ignition switch “ON”.
2) Select “P/N POSI SW” in “DATA MONITOR” mode with
CONSULT-II. Then check the “P/N POSI SW” signal
under the following conditions.
Position (Selector lever)
Known-good signal
“N” and “P” positions
ON
Except the above position
OFF
If NG, go to “DIAGNOSTIC PROCEDURE”, EC-497.
If OK, go to following step.
3) Select “DATA MONITOR” mode with CONSULT-II.
4) Start engine (TCS switch “OFF”) and warm it up to nor-
mal operating temperature.
5) Maintain the following conditions for at least 60 con-
secutive seconds.
CMPS-RPM (REF): 1,500 - 2,200 rpm
COOLAN TEMP/S: More than 70°C (158°F)
B/FUEL SCHDL: 1.4 - 5.8 msec
VHCL SPEED SE: More than 70 km/h (43 MPH)
Selector lever: Suitable position
6) If 1st trip DTC is detected, go to “DIAGNOSTIC
PROCEDURE”, EC-497
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ OR ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
OVERALL FUNCTION CHECK
Use this procedure to check the overall function of the park/neutral
position (PNP) switch circuit. During this check, a 1st trip DTC
might not be confirmed.
1) Turn ignition switch “ON”.
2) Check voltage between ECM terminal
101
and body
ground under the following conditions.
Condition (Gear position)
Voltage (V) (Known good data)
“P” and “N” position
Approx. 0
Except the above position
Approx. 5
3) If NG, go to “DIAGNOSTIC PROCEDURE”, EC-497.
GI
MA
EM
LC
FE
AT
PD
FA
RA
BR
ST
RS
BT
HA
EL
IDX
TROUBLE DIAGNOSIS FOR DTC P1706
Park/Neutral Position (PNP) Switch (Cont’d)
EC-495
TEC072M
TROUBLE DIAGNOSIS FOR DTC P1706
Park/Neutral Position (PNP) Switch (Cont’d)
EC-496
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