Infiniti Q45 (FY33). Manual — part 144
Major Sensor Reference Graph in Data Monitor
Mode
The following are the major sensor reference graphs in “DATA MONITOR” mode.
(Select “HI SPEED” in “DATA MONITOR” with CONSULT-II.)
THRTL POS SEN, ABSOL TH
⋅
P/S, CLSD THL/P SW
Below is the data for “THRTL POS SEN”, “ABSOL TH
⋅
P/S” and “CLSD THL/P SW” when depressing the
accelerator 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/P SW” is changed from “ON” to “OFF”.
SEF877X
CMPS
⋅
RPM (POS), MAS AIR/FL SE, THRTL POS SEN, HO2S2 (B1), (B2), HO2S1 (B1), (B2),
INJ PULSE
Below is the data for “CMPS
⋅
RPM (POS)”, “MAS AIR/FL SE”, “THRTL POS SEN”, “HO2S2 (B1), (B2)”, “HO2S1
(B1), (B2)” and “INJ PULSE” when revving engine quickly up to 4,800 rpm under no load after warming up
engine to normal operating temperature.
Each value is for reference, the exact value may vary.
SEF878XA
GI
MA
EM
LC
FE
AT
PD
FA
RA
BR
ST
RS
BT
HA
EL
IDX
TROUBLE DIAGNOSIS — General Description
EC-105
SEF242YA
TROUBLE DIAGNOSIS — General Description
Major Sensor Reference Graph in Data Monitor
Mode (Cont’d)
EC-106
SEF408W
ECM Terminals and Reference Value
PREPARATION
1.
ECM is located behind right side front pillar lower garnish. For
this inspection, remove the glove box.
AEC913
2.
Remove ECM harness protector.
SEF367I
3.
Perform all voltage measurements with the connectors con-
nected. Extend tester probe as shown to perform tests easily.
I
Open harness securing clip to make resting easier.
I
Use extreme care not to touch 2 pins at one time.
I
Data is for comparison and may not be exact.
ECM HARNESS CONNECTOR TERMINAL LAYOUT
SEF218U
GI
MA
EM
LC
FE
AT
PD
FA
RA
BR
ST
RS
BT
HA
EL
IDX
TROUBLE DIAGNOSIS — General Description
EC-107
ECM INSPECTION TABLE
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)
1
2
3
14
4
5
6
7
R/B
R/W
R/Y
R/L
W/R
PU/R
GY/L
LG
Injector No. 1
Injector No. 8
Injector No. 7
Injector No. 3
Injector No. 6
Injector No. 5
Injector No. 4
Injector No. 2
Engine is running. (Warmed-up condition)
Idle speed
BATTERY VOLTAGE
(11 - 14V)
SEF388X
Engine is running.
Engine speed is 2,000 rpm.
BATTERY VOLTAGE
(11 - 14V)
SEF526Y
10
L/Y
EGRC-solenoid valve
Engine is running. (Warmed-up condition)
Lift up drive wheels and rev engine from idle
to 3,000 rpm in “D” position.
0 - 0.7V
Engine is running. (Warmed-up condition)
Idle speed
BATTERY VOLTAGE
(11 - 14V)
8
11
12
13
GY/L
PU
G/Y
Y
IACV-AAC valve
Engine is running.
Idle speed
0.1 - 14V
15
R/L
Fuel pump control module
Engine is cranking.
Approximately 0.4V
Engine is running.
Idle speed
Approximately 12V
16
17
L/Y
G/W
Heated oxygen sensor 1
heater (front) (bank 2)
Heated oxygen sensor 1
heater (front) (bank 1)
Engine is running.
Engine speed is below 3,200 rpm.
0 - 0.5V
Engine is running.
Engine speed is above 3,200 rpm.
BATTERY VOLTAGE
(11 - 14V)
TROUBLE DIAGNOSIS — General Description
ECM Terminals and Reference Value (Cont’d)
EC-108
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