Nissan Pathfinder. Manual — part 444
EC-82
< ECU DIAGNOSIS INFORMATION >
[VQ35DE]
ECM
41
(SB)
128
(B)
Heated oxygen sensor 2 heat-
er (bank 2)
Output
[Engine is running]
Engine speed: Below 3,600 rpm
after the following conditions are
met
• Engine: after warming up
• Keeping the engine speed be-
tween 3,500 and 4,000 rpm
for 1 minute and at idle for 1
minute under no load
10 V
• [Ignition switch: ON]
Engine stopped
• [Engine is running]
Engine speed: Above 3,600
rpm
BATTERY VOLTAGE
(11 - 14 V)
42
(BR)
128
(B)
EVAP canister purge volume
control solenoid valve
Output
[Engine is running]
• Idle speed
• Accelerator pedal: Not de-
pressed even slightly, after
engine starting
BATTERY VOLTAGE
(11 - 14 V)
[Engine is running]
Engine speed: approximately
2,000 rpm (More than 100 sec-
onds after starting engine)
BATTERY VOLTAGE
(11 - 14 V)
43
(W)
128
(B)
Fuel pump relay
Output
• [Ignition switch: ON]
For 1 second after turning ig-
nition switch ON
• [Engine is running]
0 - 1.0 V
54
(LG)
84
(Y)
Sensor power supply
[Crankshaft position sensor
(POS)]
—
[Ignition switch: ON]
5 V
55
(BR)
128
(B)
Intake valve timing control so-
lenoid valve (bank 1)
Output
[Engine is running]
• Warm-up condition
• Idle speed
BATTERY VOLTAGE
(11 - 14 V)
[Engine is running]
• Warm-up condition
• Engine speed: 2,000 rpm
7 - 12 V
Terminal No.
Description
Condition
Value
(Approx.)
+
-–
Signal name
Input/
Output
JMBIA0902GB
JMBIA0039GB
JMBIA0040GB
JMBIA0038GB
ECM
EC-83
< ECU DIAGNOSIS INFORMATION >
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
56
(Y)
128
(B)
Intake valve timing control so-
lenoid valve (bank 2)
Output
[Engine is running]
• Warm-up condition
• Idle speed
BATTERY VOLTAGE
(11 - 14 V)
[Engine is running]
• Warm-up condition
• Engine speed: 2,000 rpm
7 - 12 V
57
(L)
128
(B)
Heated oxygen sensor 2
(bank 1)
Input
[Engine is running]
Revving engine from idle to
3,000 rpm quickly after the fol-
lowing conditions are met
• Engine: after warming up
• Keeping the engine speed be-
tween 3,500 and 4,000 rpm
for 1 minute and at idle for 1
minute under no load
0 - 1.0 V
58
(L)
128
(B)
Heated oxygen sensor 2
(bank 2)
Input
[Engine is running]
Revving engine from idle to
3,000 rpm quickly after the fol-
lowing conditions are met
• Engine: after warming up
• Keeping the engine speed be-
tween 3,500 and 4,000 rpm
for 1 minute and at idle for 1
minute under no load
0 - 1.0 V
59
(B)
—
Sensor ground
(Heated oxygen sensor 2)
—
—
—
63
(SB)
64
(V)
Refrigerant pressure sensor
Input
[Engine is running]
• Warm-up condition
• Both A/C switch and blower
fan motor switch: ON (Com-
pressor operates)
1.0 - 4.0 V
64
(V)
—
Sensor ground
(Refrigerant pressure sensor)
—
—
—
66
(W)
—
—
—
—
—
67
(Y)
—
—
—
—
—
68
(G)
—
—
—
—
—
69
(B)
128
(B)
A/F sensor 1 (bank 1)
Input
[Engine is running]
• Warm-up condition
• Engine speed: 2,000 rpm
2.2 V
Output voltage varies with air fuel
ratio.
70
(BR)
76
(B)
Engine coolant temperature
sensor
Input
[Engine is running]
0 - 4.8 V
Output voltage varies with engine
coolant temperature.
73
(W)
128
(B)
A/F sensor 1 (bank 1)
Input
[Ignition switch: ON]
1.8 V
74
(V)
80
(BR)
Intake air temperature sensor
Input
[Engine is running]
0 - 4.8 V
Output voltage varies with intake
air temperature.
Terminal No.
Description
Condition
Value
(Approx.)
+
-–
Signal name
Input/
Output
JMBIA0038GB
EC-84
< ECU DIAGNOSIS INFORMATION >
[VQ35DE]
ECM
75
(LG)
—
—
—
—
—
76
(B)
—
Sensor ground
(Engine coolant temperature
sensor, engine oil tempera-
ture sensor)
—
—
—
77
(B)
128
(B)
A/F sensor 1 (bank 2)
Input
[Engine is running]
• Warm-up condition
• Engine speed: 2,000 rpm
2.2 V
Output voltage varies with air fuel
ratio.
78
(G)
76
(B)
Engine oil temperature sensor
Input
[Engine is running]
0 - 4.8 V
Output voltage varies with engine
oil temperature.
80
(BR)
—
Sensor ground
(Mass air flow sensor, intake
air temperature sensor)
—
—
—
81
(W)
128
(B)
A/F sensor 1 (bank 2)
Input
[Ignition switch: ON]
1.8 V
82
(P)
80
(BR)
Mass air flow sensor
Input
[Engine is running]
• Warm-up condition
• Idle speed
0.8 - 1.2 V
[Engine is running]
• Warm-up condition
• Engine speed: 2,500 rpm
1.6 - 1.9 V
83
(BR)
88
(LG)
Sensor power supply
[Camshaft position sensor
(PHASE) (bank 1)]
—
[Ignition switch: ON]
5 V
84
(Y)
—
Sensor ground
[Crankshaft position sensor
(POS)]
—
—
—
85
(B)
91
(—)
Knock sensor (bank 1)
Input
[Engine is running]
Idle speed
2.5 V*
1
86
(W)
91
(—)
Knock sensor (bank 2)
Input
[Engine is running]
Idle speed
2.5 V*
1
87
(V)
92
(SB)
Sensor power supply
[Camshaft position sensor
(PHASE) (bank 2)]
—
[Ignition switch: ON]
5 V
88
(LG)
—
Sensor ground
[Camshaft position sensor
(PHASE) (bank 1)]
—
—
—
Terminal No.
Description
Condition
Value
(Approx.)
+
-–
Signal name
Input/
Output
ECM
EC-85
< ECU DIAGNOSIS INFORMATION >
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
89
(L)
84
(Y)
Crankshaft position sensor
(POS)
Input
[Engine is running]
• Warm-up condition
• Idle speed
NOTE:
The pulse cycle changes de-
pending on rpm at idle
4.0 - 5.0 V
[Engine is running]
Engine speed: 2,000 rpm
4.0 - 5.0 V
91
(—)
—
Sensor ground
[Knock sensor (bank 1),
knock sensor (bank 2)]
—
—
—
92
(SB)
—
Sensor ground
[Camshaft position sensor
(PHASE) (bank 2)]
—
—
—
93
(LG)
92
(SB)
Camshaft position sensor
(PHASE) (bank 2)
Input
[Engine is running]
• Warm-up condition
• Idle speed
NOTE:
The pulse cycle changes de-
pending on rpm at idle
3.0 - 5.0 V
[Engine is running]
Engine speed is 2,000 rpm
3.0 - 5.0 V
94
(GR)
88
(LG)
Camshaft position sensor
(PHASE) (bank 1)
Input
[Engine is running]
• Warm-up condition
• Idle speed
NOTE:
The pulse cycle changes de-
pending on rpm at idle
3.0 - 5.0 V
[Engine is running]
Engine speed is 2,000 rpm
3.0 - 5.0 V
Terminal No.
Description
Condition
Value
(Approx.)
+
-–
Signal name
Input/
Output
JMBIA0041GB
JMBIA0042GB
JMBIA0045GB
JMBIA0046GB
JMBIA0045GB
JMBIA0046GB
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