Nissan Altima L32. Manual - part 991

PCS-28

< ECU DIAGNOSIS >

[IPDM E/R]

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

32

(L/O)

Ground

Electronic steering column 
lock unit condition-1

Input

Electronic steering column lock is acti-
vated

0V

Electronic steering column lock is deac-
tivated

Battery voltage

33

(G/R)

Ground

Electronic steering column 
lock unit condition-2

Input

Electronic steering column lock is acti-
vated

Battery voltage

Electronic steering column lock is deac-
tivated

0V

34

(O/L)

Ground Cooling fan relay-3 control

Input

Ignition switch OFF or ACC

0V

Ignition switch ON

0.7V

35

(L/B)

Ground Cooling fan motor control

Output

Ignition switch OFF or ACC

0V

Ignition switch ON

0.7V

36

(G)

Ground Battery power supply

Input

Ignition switch OFF

Battery voltage

38

(R/W)

Ground Cooling fan motor control

Output

Ignition switch OFF or ACC

0V

Ignition switch ON

0.7V

39

(P)

—

CAN  -  L

Input/ 

Output

—

—

40

(L)

—

CAN  -  H

Input/ 

Output

—

—

41

(B)

Ground Ground

—

Ignition switch ON

0V

42

(SB)

Ground Cooling fan relay-2 control

Input

Ignition switch OFF or ACC

0V

Ignition switch ON

0.7V

43

(G/B)

Ground

CVT device
(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)

0V

44

(G/W)

Ground Horn relay control

Input

The horn is deactivated

Battery voltage

The horn is activated

0V

45

(L/O)

Ground Anti theft horn relay control

Input

The horn is deactivated

Battery voltage

The horn is activated

0V

46

(R)

Ground Starter relay control 

Input

CVT mod-
els

CVT selector lever in any 
position other than P or N 
(ignition switch ON)

0V

CVT selector lever P or N 
(ignition switch ON)

Battery voltage

M/T mod-
els

Release the clutch pedal

0V

Depress the clutch pedal

Battery voltage

48

(Y/R)

Ground A/C relay power supply

Output

Engine 
running

A/C switch OFF

0V

A/C switch ON
(A/C compressor is oper-
ating)

Battery voltage

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

Signal name

Input/ 

Output

+

−

PCS

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

PCS-29

< ECU DIAGNOSIS >

[IPDM E/R]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

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

+

−

PCS-30

< ECU DIAGNOSIS >

[IPDM E/R]

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

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

PCS

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

PCS-31

< ECU DIAGNOSIS >

[IPDM E/R]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

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

+

−