Infiniti QX4 (R50). Manual — part 164
MONITOR ITEM
CONDITION
SPECIFICATION
VHCL SPEED SE
I
Turn drive wheels and compare speedometer indication with the CON-
SULT-II value
Almost the same speed as
the CONSULT-II value
BATTERY VOLT
I
Ignition switch: ON (Engine stopped)
11 - 14V
THRTL POS SEN
I
Engine: After warming up, idle
the engine
Throttle valve: fully closed
0.15 - 0.85V
I
Engine: After warming up
I
Ignition switch: ON
(Engine stopped)
Throttle valve: fully opened
3.5 - 4.7V
START SIGNAL
I
Ignition switch: ON
,
START
,
ON
OFF
,
ON
,
OFF
CLSD THL POS
CLSD THL/P SW
I
Engine: After warming up, idle
the engine
Throttle valve: Idle position
ON
Throttle valve: Slightly open
OFF
AIR COND SIG
I
Engine: After warming up, idle
the engine
Air conditioner switch: “OFF”
OFF
Air conditioner switch: “ON”
(Compressor operates.)
ON
P/N POSI SW
I
Ignition switch: ON
Shift lever: “P” or “N”
ON
Except above
OFF
PW/ST SIGNAL
I
Engine: After warming up, idle
the engine
Steering wheel in neutral position
(forward direction)
OFF
The steering wheel is turned
ON
IGNITION SW
I
Ignition switch: ON
,
OFF
,
ON
ON
,
OFF
,
ON
INJ PULSE-B2
INJ PULSE-B1
I
Engine: After warming up
I
Air conditioner switch: “OFF”
I
Shift lever: “N”
I
No-load
Idle
2.4 - 3.2 msec
2,000 rpm
1.9 - 2.8 msec
B/FUEL SCHDL
I
Engine: After warming up
I
Air conditioner switch: “OFF”
I
Shift lever: “N”
I
No-load
Idle
2.0 - 3.2 msec
2,000 rpm
1.4 - 2.6 msec
IGN TIMING
I
Engine: After warming up
I
Air conditioner switch: “OFF”
I
Shift lever: “N”
I
No-load
Idle
15°
±
5° BTDC
2,000 rpm
More than 25° BTDC
IACV-AAC/V
I
Engine: After warming up
I
Air conditioner switch: “OFF”
I
Shift lever: “N”
I
No-load
Idle
2 - 10 step
2,000 rpm
—
PURG VOL C/V
I
Engine: After warming up
I
Air conditioner switch: “OFF”
I
Shift lever: “N”
I
No-load
Idle
0 %
2,000 rpm
—
A/F ALPHA-B2
A/F ALPHA-B1
I
Engine: After warming up
Maintaining engine speed at 2,000
rpm
54 - 155%
EVAP SYS PRES
I
Ignition switch: ON
Approx. 3.4V
AIR COND RLY
I
Air conditioner switch: OFF
,
ON
OFF
,
ON
FUEL PUMP RLY
I
Ignition switch is turned to ON (Operates for 5 seconds)
I
Engine running and cranking
ON
Except as shown above
OFF
GI
MA
EM
LC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
CONSULT-II Reference Value in Data Monitor Mode (Cont’d)
EC-123
MONITOR ITEM
CONDITION
SPECIFICATION
VENT CONT/V
I
Ignition switch: ON
OFF
HO2S1 HTR (B1)
HO2S1 HTR (B2)
I
Engine speed: Below 3,600 rpm
ON
I
Engine speed: Above 3,600 rpm
OFF
HO2S2 HTR (B1)
HO2S2 HTR (B2)
I
Ignition switch: ON (Engine stopped)
I
Engine speed: Above 3,200 rpm
OFF
I
Engine speed: Below 3,200 rpm [After driving for 2 minutes at a speed
of 70 km/h (43 MPH) or more]
ON
VC/V BYPASS/V
Ignition switch: ON
OFF
CAL/LD VALUE
I
Engine: After warming up
I
Air conditioner switch: “OFF”
I
Shift lever: “N”
I
No-load
Idle
14.0 - 33.0%
2,500 rpm
12.0 - 25.0%
ABSOL TH·P/S
I
Engine: After warming up
Throttle valve: fully closed
0.0%
I
Engine: After warming up
I
Ignition switch: ON
(Engine stopped)
Throttle valve: fully opened
Approx. 80%
MASS AIRFLOW
I
Engine: After warming up
I
Air conditioner switch: “OFF”
I
Shift lever: “N”
I
No-load
Idle
2.0 - 6.0 g·m/s
2,500 rpm
7.0 - 20.0 g·m/s
ABSOL PRES/SE
I
Ignition switch: ON
Approx. 4.4V
SWRL CONT S/V
I
Engine speed: Idle
Engine coolant temperature is
between 15°C (59°F) to 50°C
(122°F).
ON
Engine coolant temperature is above
55°C (131°F).
OFF
SWL CON VC SW
I
Engine speed: Idle
I
Engine coolant temperature is between 15°C (59°F) to 50°C (122°F).
OFF
I
Engine speed: Idle
I
Engine coolant temperature is above 55°C (131°F).
ON
INT/V TIM (B1)
INT/V TIM (B2)
I
Engine: After warming up
I
Shift lever “N”
I
Quickly depressed accelerator
pedal
I
No-load
Idle
0° CA
2,000 rpm
Approximately 12 - 18° CA
INT/V SOL (B1)
INT/V SOL (B2)
I
Engine: After warming up
I
Shift lever “N”
I
Quickly depressed accelerator
pedal
I
No-load
Idle
0%
2,000 rpm
Approximately 40%
Major Sensor Reference Graph in Data Monitor
Mode
NBEC0043
The following are the major sensor reference graphs in “DATA MONITOR” mode.
THRTL POS SEN, ABSOL TH·P/S, CLSD THL POS
NBEC0043S01
Below is the data for “THRTL POS SEN”, “ABSOL TH·P/S” and “CLSD THL POS” when depressing the accel-
erator pedal with the ignition switch “ON”.
The signal of “THRTL POS SEN” and “ABSOL TH·P/S” should rise gradually without any intermittent drop or
rise after “CLSD THL POS” is changed from “ON” to “OFF”.
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
CONSULT-II Reference Value in Data Monitor Mode (Cont’d)
EC-124
SEF306Y
ENG SPEED, MAS A/F SE-B1, THRTL POS SEN, HO2S2 (B1), HO2S1 (B1), INJ PULSE-B1
NBEC0043S02
Below is the data for “ENG SPEED”, “MAS A/F SE-B1”, “THRTL POS SEN”, “HO2S2 (B1)”, “HO2S1 (B1)” and
“INJ PULSE-B1” when revving engine quickly up to 4,800 rpm under no load after warming up engine suffi-
ciently.
Each value is for reference, the exact value may vary.
SEF241Y
GI
MA
EM
LC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Major Sensor Reference Graph in Data Monitor Mode (Cont’d)
EC-125
SEF242YA
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Major Sensor Reference Graph in Data Monitor Mode (Cont’d)
EC-126
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