Nissan Maxima. Instruction — part 1233
WW-56
< ECU DIAGNOSIS INFORMATION >
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Terminal No.
(Wire color)
Description
Condition
Value
(Approx.)
Signal name
Input/
Output
+
−
1
(R)
Ground Battery power supply
Input
Ignition switch OFF
Battery voltage
2
(L)
Ground Battery power supply
Input
Ignition switch OFF
Battery voltage
4
(LG)
Ground Front wiper LO
Output
Ignition
switch ON
Front wiper switch OFF
0 V
Front wiper switch LO
Battery voltage
5
(Y)
Ground Front wiper HI
Output
Ignition
switch ON
Front wiper switch OFF
0 V
Front wiper switch HI
Battery voltage
6
(L)
Ground
Daytime light relay power
supply (Canada models
only)
Output
Ignition switch OFF
Battery voltage
7
(GR)
Ground
Tail, license plate lamps &
interior lamps
Output
Ignition
switch ON
Lighting switch OFF
0 V
Lighting switch 1ST
Battery voltage
10
(BR)
Ground ECM relay power supply
Output
Ignition switch OFF
(For a few seconds after turning ignition
switch OFF)
0 V
• Ignition switch ON
• Ignition switch OFF
(More than a few seconds after turn-
ing ignition switch OFF)
Battery voltage
12
(B)
Ground Ground
—
Ignition switch ON
0 V
13
(SB)
Ground Fuel pump power supply
Output
Approximately 1 second or more after
turning the ignition switch ON
0 V
• Approximately 1 second after turning
the ignition switch ON
• Engine running
Battery voltage
15
(W)
Ground
Ignition relay-1 power sup-
ply
Output
Ignition switch OFF
0 V
Ignition switch ON
Battery voltage
16
(R)
Ground Front wiper auto stop
Input
Ignition
switch ON
Front wiper stop position
0 V
Any position other than
front wiper stop position
Battery voltage
19
(Y)
Ground
Ignition relay-1 power sup-
ply
Output
Ignition switch OFF
0 V
Ignition switch ON
Battery voltage
20
(L)
Ground Ambient sensor ground
—
Ignition switch ON
0V
21
(LG)
Ground Ambient sensor
—
Ignition switch ON
5V
22
(SB)
Ground
Refrigerant pressure sen-
sor ground
—
Ignition switch ON
0V
23
(GR)
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
24
(G)
Ground
Refrigerant pressure sen-
sor power supply
—
Ignition switch ON
5V
25
(GR)
Ground
Ignition relay-1 power sup-
ply
Output
Ignition switch OFF
0 V
Ignition switch ON
Battery voltage
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
WW-57
< ECU DIAGNOSIS INFORMATION >
C
D
E
F
G
H
I
J
K
M
A
B
WW
N
O
P
27
(W)
Ground Ignition relay monitor
Input
Ignition switch OFF or ACC
Battery voltage
Ignition switch ON
0 V
28
(SB)
Ground
Push-button ignition
switch
Input
Press the push-button ignition switch
0 V
Release the push-button ignition switch Battery voltage
30
(BR)
Ground Starter relay control
Input
CVT selector lever in any position other
than P or N (ignition switch ON)
0 V
CVT selector lever P or N (ignition
switch ON)
Battery voltage
34
(O)
Ground Cooling fan relay-3 control
Input
Ignition switch OFF or ACC
0 V
Ignition switch ON
0.7 V
35
(P)
Ground Cooling fan motor control
Output
Ignition switch OFF or ACC
0 V
Ignition switch ON
0.7 V
36
(G)
Ground Battery power supply
Input
Ignition switch OFF
Battery voltage
38
(GR)
Ground Cooling fan motor control
Output
Ignition switch OFF or ACC
0 V
Ignition switch ON
0.7 V
39
(P)
—
CAN - L
Input/
Output
—
—
40
(L)
—
CAN - H
Input/
Output
—
—
41
(B)
Ground Ground
—
Ignition switch ON
0 V
42
(SB)
Ground Cooling fan relay-2 control
Input
Ignition switch OFF or ACC
0 V
Ignition switch ON
0.7 V
43
(Y)
Ground
CVT shift selector
(Detention switch)
Input
Ignition
switch ON
Press the CVT selector
button (CVT selector lever
P)
Battery voltage
• CVT selector lever in
any position other than
P
• Release the CVT selec-
tor button (CVT selector
lever P)
0 V
44
(W)
Ground Horn relay control
Input
The horn is deactivated
Battery voltage
The horn is activated
0 V
45
(GR)
Ground Anti theft horn relay control
Input
The horn is deactivated
Battery voltage
The horn is activated
0 V
46
(BR)
Ground Starter relay control
Input
CVT selector lever in any position other
than P or N (ignition switch ON)
0 V
CVT selector lever P or N (ignition
switch ON)
Battery voltage
48
(W)
Ground A/C relay power supply
Output
Engine
running
A/C switch OFF
0 V
A/C switch ON
(A/C compressor is oper-
ating)
Battery voltage
Terminal No.
(Wire color)
Description
Condition
Value
(Approx.)
Signal name
Input/
Output
+
−
WW-58
< ECU DIAGNOSIS INFORMATION >
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
49
(R/B)
Ground ECM relay power supply
Output
Ignition switch OFF
(For a few seconds after turning ignition
switch OFF)
0 V
• 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
0 V
Ignition switch ON
Battery voltage
52
(Y/G)
Ground Ignition relay power supply
Output
Ignition switch OFF
0 V
Ignition switch ON
Battery voltage
53
(R/W)
Ground ECM relay power supply
Output
Ignition switch OFF
(For a few seconds after turning ignition
switch OFF)
0 V
• 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)
0 V
• 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
0 V
Ignition switch ON
Battery voltage
57
(O)
Ground Ignition relay power supply
Output
Ignition switch OFF
0 V
Ignition switch ON
Battery voltage
58
(Y)
Ground Ignition relay power supply
Output
Ignition switch OFF
0 V
Ignition switch ON
Battery voltage
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 - 1.5 V
70
(O)
Ground
Throttle control motor re-
lay control
Output
Ignition switch ON
→ OFF
0 -1.0 V
↓
Battery voltage
↓
0 V
Ignition switch ON
0 - 1.0 V
72
(R/B)
Ground
Transmission range 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
0 V
Terminal No.
(Wire color)
Description
Condition
Value
(Approx.)
Signal name
Input/
Output
+
−
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
WW-59
< ECU DIAGNOSIS INFORMATION >
C
D
E
F
G
H
I
J
K
M
A
B
WW
N
O
P
75
(LG)
Ground Oil pressure switch
Input
Ignition
switch ON
Engine stopped
0 V
Engine running
Battery voltage
76
(SB)
Ground
Power generation com-
mand signal
Output
Ignition switch ON
6.3 V
40% is set on “Active test”, “ALTERNA-
TOR DUTY” of “ENGINE”
3.8 V
80% is set on “Active test”, “ALTERNA-
TOR DUTY” of “ENGINE”
1.4 V
77
(GR)
Ground Fuel pump relay control
Output
• Approximately 1 second after turning
the ignition switch ON
• Engine running
0 - 1.0 V
Approximately 1 second or more after
turning the ignition switch ON
Battery voltage
80
(B)
Ground Starter motor
Output
At engine cranking
Battery voltage
83
(R/Y)
Ground Headlamp LO (RH)
Output
Ignition
switch ON
Lighting switch OFF
0 V
Lighting switch 2ND
Battery voltage
84
(L)
Ground Headlamp LO (LH)
Output
Ignition
switch ON
Lighting switch OFF
0 V
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 0 V
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 0 V
Terminal No.
(Wire color)
Description
Condition
Value
(Approx.)
Signal name
Input/
Output
+
−
JPMIA0001GB
JPMIA0002GB
JPMIA0003GB
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