Nissan Altima L32. Instruction — part 1260

SEC-190

< ECU DIAGNOSIS >

[COUPE]

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

TERMINAL LAYOUT

PHYSICAL VALUES

ALMIA0128ZZ

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

(L/R)

Ground Front wiper LO

Output

Ignition
switch ON

Front wiper switch OFF

0V

Front wiper switch LO

Battery voltage

5

(L/B)

Ground Front wiper HI

Output

Ignition
switch ON

Front wiper switch OFF

0V

Front wiper switch HI

Battery voltage

6

(SB)

Ground

Daytime light relay power
supply (Canada models
only)

Output

Ignition switch OFF

Battery voltage

7

(R/L)

Ground

Tail, license plate lamps &
interior lamps

Output

Ignition
switch ON

Lighting switch OFF

0V

Lighting switch 1ST

Battery voltage

10

(R/B)

Ground ECM relay 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

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

SEC-191

< ECU DIAGNOSIS >

[COUPE]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

11

(P/L)

Ground

Steering lock unit power
supply

Output

Ignition
switch
OFF

A few seconds after open-
ing the driver door

Battery voltage

Ignition
switch
LOCK

Press the push-button ig-
nition switch

Battery voltage

Ignition switch ACC or ON

0V

12

(B)

Ground Ground

—

Ignition switch ON

0V

13

(W)

Ground Fuel pump power supply

Output

Approximately 1 second or more after
turning the ignition switch ON

0V

• Approximately 1 second after turning

the ignition switch ON

• Engine running

Battery voltage

15

(G/W)

Ground

Ignition relay-1 power sup-
ply

Output

Ignition switch OFF

0V

Ignition switch ON

Battery voltage

16

(L/Y)

Ground Front wiper auto stop

Input

Ignition
switch ON

Front wiper stop position

0V

Any position other than
front wiper stop position

Battery voltage

19

(L/Y)

Ground

Ignition relay-1 power sup-
ply

Output

Ignition switch OFF

0V

Ignition switch ON

Battery voltage

20

(B/Y)

Ground Ambient sensor ground

—

Ignition switch ON

0V

21

(O/B)

Ground Ambient sensor

—

Ignition switch ON

5V

22

(W/R)

Ground

Refrigerant pressure sen-
sor ground

—

Ignition switch ON

0V

23

(B/R)

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

(BR/W)

Ground

Refrigerant pressure sen-
sor power supply

—

Ignition switch ON

5V

25

(GR)

Ground

Ignition relay-1 power sup-
ply

Output

Ignition switch OFF

0V

Ignition switch ON

Battery voltage

27

(BR/W)

Ground Ignition relay monitor

Input

Ignition switch OFF or ACC

Battery voltage

Ignition switch ON

0V

28

(BR)

Ground

Push-button ignition
switch

Input

Press the push-button ignition switch

0V

Release the push-button ignition switch

Battery voltage

30

(R/B)

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

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

Signal name

Input/

Output

+

−

SEC-192

< ECU DIAGNOSIS >

[COUPE]

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

+

−

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

SEC-193

< ECU DIAGNOSIS >

[COUPE]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

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

+

−