Nissan Altima L32. Instruction — part 990

PCS-24

< ECU DIAGNOSIS >

[IPDM E/R]

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

ECU DIAGNOSIS

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

Reference Value

INFOID:0000000004202420

VALUES ON THE DIAGNOSIS TOOL

Monitor Item

Condition

Value/Status

RADFAN REQ

Engine idle speed

Changes depending on engine
coolant temperature, air conditioner
operation status, vehicle speed,
etc.

0 - 100 %

AC COMP REQ

Engine running

A/C switch OFF

Off

A/C switch ON
(Compressor is operating)

On

TAIL&CLR REQ

Lighting switch OFF

Off

Lighting switch 1ST, 2ND, HI or AUTO (Light is illuminated)

On

HL LO REQ

Lighting switch OFF

Off

Lighting switch 2ND HI or AUTO (Light is illuminated)

On

HL HI REQ

Lighting switch OFF

Off

Lighting switch HI

On

FR FOG REQ

Lighting switch 2ND or
AUTO (Light is illuminated)

Front fog lamp switch OFF

Off

• Front fog lamp switch ON
• Daytime running light activated

(Only for Canada models)

On

FR WIP REQ

Ignition switch ON

Front wiper switch OFF

STOP

Front wiper switch INT

1LOW

Front wiper switch LO

Low

Front wiper switch HI

Hi

WIP AUTO STOP

Ignition switch ON

Front wiper stop position

STOP P

Any position other than front wiper
stop position

ACT P

WIP PROT

Ignition switch ON

Front wiper operates normally

Off

Front wiper stops at fail-safe opera-
tion

BLOCK

IGN RLY1 -REQ

Ignition switch OFF or ACC

Off

Ignition switch ON

On

IGN RLY

Ignition switch OFF or ACC

Off

Ignition switch ON

On

PUSH SW

Release the push-button ignition switch

Off

Press the push-button ignition switch

On

INTER/NP SW

Ignition switch ON

CVT selector lever in any position
other than P or N (CVT models)

Off

Release clutch pedal (M/T models)

Ignition switch ON

CVT selector lever in P or N posi-
tion (CVT models)

On

Depress clutch pedal (M/T models)

PCS

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

PCS-25

< ECU DIAGNOSIS >

[IPDM E/R]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

ST RLY CONT

Ignition switch ON

Off

At engine cranking

On

IHBT RLY -REQ

Ignition switch ON

Off

At engine cranking

On

ST/INHI RLY

Ignition switch ON

Off

At engine cranking

ST

→INHI

The status of starter relay or starter control relay cannot be recognized by
the battery voltage malfunction, etc. when the starter relay is ON and the
starter control relay is OFF

UNKWN

DETENT SW

Ignition switch ON

• Press the selector button with

CVT selector lever in P position

• CVT selector lever in any posi-

tion other than P

Off

Release the CVT selector button with CVT selector lever in P position
NOTE:
The lever is fixed ON for M/T

On

S/L RLY -REQ

None of the conditions below are present

Off

• Open the driver door after the ignition switch is turned OFF (for a few

seconds)

• Press the push-button ignition switch when the steering lock is activat-

ed

• Depress the clutch pedal when the steering lock is activated

On

S/L STATE

Steering lock is activated

LOCK

Steering lock is deactivated

UNLK

[DTC B210A] is detected

UNKWN

DTRL REQ

NOTE:
This item is displayed, but cannot be monitored.

Off

OIL P SW

Ignition switch OFF, ACC or engine running

Open

Ignition switch ON

Close

THFT HRN REQ

Not operated

Off

• Panic alarm is activated
• Horn is activated with VEHICLE SECURITY (THEFT WARNING) SYS-

TEM

On

HORN CHIRP

Not operated

Off

Door locking with Intelligent Key (horn chirp mode)

On

CRNRNG LMP REQ

NOTE:
This item is displayed, but cannot be monitored.

Off

Monitor Item

Condition

Value/Status

PCS-26

< ECU DIAGNOSIS >

[IPDM E/R]

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

PCS

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

PCS-27

< ECU DIAGNOSIS >

[IPDM E/R]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

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

+

−