Nissan Altima L32. Instruction — part 974
MWI-148
< ECU DIAGNOSIS >
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
49
(R/B)
Ground
ECM relay power supply
(with VQ35DE)
Output
Ignition switch OFF
(For a few seconds after turning ignition
switch OFF)
0V
• Ignition switch ON
• Ignition switch OFF
(More than a few seconds after turn-
ing ignition switch OFF)
Battery voltage
49
(B/R)
Ground
ECM relay power supply
(without VQ35DE)
Output
Ignition switch OFF
(For a few seconds after turning ignition
switch OFF)
0V
• Ignition switch ON
• Ignition switch OFF
(More than a few seconds after turn-
ing ignition switch OFF)
Battery voltage
51
(LG)
Ground Ignition relay power supply
Output
Ignition switch OFF
0V
Ignition switch ON
Battery voltage
52
(Y/G)
Ground Ignition relay power supply
Output
Ignition switch OFF
0V
Ignition switch ON
Battery voltage
53
(B/R)
Ground
ECM relay power supply
(with VQ35DE)
Output
Ignition switch OFF
(For a few seconds after turning ignition
switch OFF)
0V
• Ignition switch ON
• Ignition switch OFF
(More than a few seconds after turn-
ing ignition switch OFF)
Battery voltage
53
(R/B)
Ground
ECM relay power supply
(without VQ35DE)
Output
Ignition switch OFF
(For a few seconds after turning ignition
switch OFF)
0V
• Ignition switch ON
• Ignition switch OFF
(More than a few seconds after turn-
ing ignition switch OFF)
Battery voltage
54
(G/W)
Ground
Throttle control motor re-
lay power supply
Output
Ignition switch OFF
(For a few seconds after turning ignition
switch OFF)
0V
• Ignition switch ON
• Ignition switch OFF
(More than a few seconds after turn-
ing ignition switch OFF)
Battery voltage
55
(W/L)
Ground ECM power supply
Output
Ignition switch OFF
Battery voltage
56
(R/Y)
Ground Ignition relay power supply
Output
Ignition switch OFF
0V
Ignition switch ON
Battery voltage
57
(O)
Ground Ignition relay power supply
Output
Ignition switch OFF
0V
Ignition switch ON
Battery voltage
58
(Y)
Ground Ignition relay power supply
Output
Ignition switch OFF
0V
Ignition switch ON
Battery voltage
Terminal No.
(Wire color)
Description
Condition
Value
(Approx.)
Signal name
Input/
Output
+
−
MWI
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
MWI-149
< ECU DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
69
(W/B)
Ground ECM relay control
Output
Ignition switch OFF
(For a few seconds after turning ignition
switch OFF)
Battery voltage
• Ignition switch ON
• Ignition switch OFF
(More than a few seconds after turn-
ing ignition switch OFF)
0 - 1.5V
70
(O)
Ground
Throttle control motor re-
lay control
Output
Ignition switch ON
→ OFF
0 -1.0V
↓
Battery voltage
↓
0V
Ignition switch ON
0 - 1.0V
72
(R/B)
Ground PNP switch signal
Input
Ignition
switch ON
CVT selector lever in P or
N position
Battery voltage
CVT selector lever in any
position other than P or N
position
0V
74
(Y)
Ground Ignition relay power supply
Output
Ignition switch OFF
0V
Ignition switch ON
Battery voltage
75
(P/L)
Ground Oil pressure switch
Input
Ignition
switch ON
Engine stopped
0V
Engine running
Battery voltage
76
(GR)
Ground
Power generation com-
mand signal
Output
Ignition switch ON
6.3V
40% is set on “Active test”, “ALTERNA-
TOR DUTY” of “ENGINE”
3.8V
80% is set on “Active test”, “ALTERNA-
TOR DUTY” of “ENGINE”
1.4V
77
(B/R)
Ground Fuel pump relay control
Output
• Approximately 1 second after turning
the ignition switch ON
• Engine running
0 - 1.0V
Approximately 1 second or more after
turning the ignition switch ON
Battery voltage
Terminal No.
(Wire color)
Description
Condition
Value
(Approx.)
Signal name
Input/
Output
+
−
JPMIA0001GB
JPMIA0002GB
JPMIA0003GB
MWI-150
< ECU DIAGNOSIS >
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
80
(B/W)
Ground Starter motor
Output
At engine cranking
Battery voltage
83
(R/Y)
Ground Headlamp LO (RH)
Output
Ignition
switch ON
Lighting switch OFF
0V
Lighting switch 2ND
Battery voltage
84
(L)
Ground Headlamp LO (LH)
Output
Ignition
switch ON
Lighting switch OFF
0V
Lighting switch 2ND
Battery voltage
86
(W/R)
Ground Front fog lamp (RH)
Output
Lighting
switch
2ND
• Front fog lamp switch
ON
• Daytime running light
activated (Only for Can-
ada models)
Battery voltage
Front fog lamp switch OFF
0V
87
(L/Y)
Ground Front fog lamp (LH)
Output
Lighting
switch
2ND
• Front fog lamp switch
ON
• Daytime running light
activated (Only for Can-
ada models)
Battery voltage
Front fog lamp switch OFF
0V
88
(R/W)
Ground
Washer pump power sup-
ply
Output
Ignition switch ON
Battery voltage
89
(L/W)
Ground Headlamp HI (RH)
Output
Ignition
switch ON
• Lighting switch HI
• lighting switch PASS
Battery voltage
Lighting switch OFF
0V
90
(G)
Ground Headlamp HI (LH)
Output
Ignition
switch ON
• Lighting switch HI
• Lighting switch PASS
Battery voltage
Lighting switch OFF
0V
91
(LG/R)
Ground Parking lamp (RH)
Output
Ignition
switch ON
Lighting switch 1ST
Battery voltage
Lighting switch OFF
0V
92
(LG/B)
Ground Parking lamp (LH)
Output
Ignition
switch ON
Lighting switch 1ST
Battery voltage
Lighting switch OFF
0V
99
(BR/W)
Ground Ambient sensor ground
—
Ignition switch ON
0V
100
(SB)
Ground Ambient sensor
—
Ignition switch ON
5V
101
(O/L)
Ground
Refrigerant pressure sen-
sor ground
—
Ignition switch ON
0V
102
(R/B)
Ground
Refrigerant pressure sen-
sor
—
• Ignition switch ON (READY)
• Both A/C switch and blower motor
switch ON (electric compressor oper-
ates)
1.0 - 4.0V
103
(P)
Ground
Refrigerant pressure sen-
sor power supply
—
Ignition switch ON
5V
105
(V)
Ground Daytime light relay control
Output
Ignition
switch ON
Daytime light system ac-
tive
Battery voltage
Ignition
switch ON
Daytime light system inac-
tive
0V
Terminal No.
(Wire color)
Description
Condition
Value
(Approx.)
Signal name
Input/
Output
+
−
MWI
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
MWI-151
< ECU DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
Wiring Diagram — Coupe
INFOID:0000000004495961
ABMWA0187GB
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