Nissan Sentra. Manual - part 673

PCS

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

PCS-45

< ECU DIAGNOSIS INFORMATION >

[IPDM E/R (WITHOUT I-KEY)]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

25

(G)

Ground

ECM relay power sup-
ply

Output

Ignition switch OFF
(More than a few seconds after turning igni-
tion switch OFF)

0 – 1 V

• Ignition switch ON
• Ignition switch OFF

(For a few seconds after turning ignition 
switch OFF)

6 – 16 V

26

(P)

Ground

ECM relay power sup-
ply

Output

Ignition switch OFF
(More than a few seconds after turning igni-
tion switch OFF)

0 – 1 V

• Ignition switch ON
• Ignition switch OFF

(For a few seconds after turning ignition 
switch OFF)

6 – 16 V

27

(L)

Ground

Front combination 
lamp LH/RH

Output

Lighting switch OFF

0 – 1 V

Lighting switch 1ST

9 – 16 V

28

(R)

Ground

Rear combination 
lamp, license plate 
lamp and illuminations

Output

Lighting switch OFF

0 – 1 V

Lighting switch 1ST

9 – 16 V

29

(L)

Ground

Front wiper HI

Output

Ignition 
switch 
ON

Front wiper switch OFF

0 – 1 V

Front wiper switch HI

9 – 16 V

31

(O)

Ground

ECM relay control

Output

Ignition switch OFF
(More than a few seconds after turning igni-
tion switch OFF)

6 – 16 V

• Ignition switch ON
• Ignition switch OFF

(For a few seconds after turning ignition 
switch OFF)

0 – 1 V

32

(Y)

Ground

ECM power supply

Output Ignition switch OFF

6 – 16 V

33

(V)

Ground

Illumination

Output

Lighting switch OFF

0 – 1 V

Lighting switch 1ST

9 – 16 V

35

(W)

Ground

Front wiper LO

Output

Ignition 
switch 
ON

Front wiper switch OFF

0 – 1 V

Front wiper switch LO

9 – 16 V

37

(SB)

Ground

Cranking request

Output

Ignition switch OFF

0 – 1 V

Ignition 
switch 
ON

Select lever P or N

Select lever in any position oth-
er than P or N

9 – 16 V

Engine running

39

(BR)

Ground

Front wiper stop posi-
tion

Input

Ignition 
switch 
ON

Front wiper stop position

0 – 1.5 V

Any position other than front 
wiper stop position

9 – 16 V

40

(P)

Ground

CAN-L

Input/

Output

—

—

41

(L)

Ground

CAN-H

Input/

Output

—

—

42

(Y)

Ground

DTRL relay

Output

Lighting switch OFF

0 – 1 V

Lighting switch 1ST

9 – 16 V

Terminal NO.

(Wire color)

Description

Condition

Value

(Approx.)

Signal name

Input/

Output

+

–

PCS-46

< ECU DIAGNOSIS INFORMATION >

[IPDM E/R (WITHOUT I-KEY)]

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

44

(V)

Ground

Starter relay control

Input

Ignition 
switch 
ON

Select lever P or N

6 – 16 V

Select lever in any position oth-
er than P or N

0 – 1 V

45

(Y)

Ground

Fuel pump relay con-
trol

Output

• Approximately 1 second after turning the 

ignition switch ON

• Engine running

0 – 1 V

Approximately 1 second or more after turn-
ing the ignition switch ON

6 – 16 V

47

(G)

Ground

Power generation 
command 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

48

(L)

Ground

Horn relay control

Output

The horn is deactivated

9 – 16 V

The horn is activated

0 – 1 V

52

(B/Y)

Ground

Ground

—

Ignition switch ON

0 – 1 V

53

(W)

Ground

Front fog lamp (RH)

Output

Lighting 
switch 
1ST, 2ND 
or AUTO

Front fog lamp switch OFF

0 – 1 V

Front fog lamp switch ON

9 – 16 V

54

(V)

Ground

Front fog lamp (LH)

Output

Lighting 
switch 
1ST, 2ND 
or AUTO

Front fog lamp switch OFF

0 – 1 V

Front fog lamp switch ON

9 – 16 V

56

(G)

Ground

Ignition switch

Output

Ignition switch OFF or ACC

0 – 1 V

Ignition switch ON

6 – 16 V

57

(B/Y)

Ground

Ground

—

Ignition switch ON

0 – 1 V

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-47

< ECU DIAGNOSIS INFORMATION >

[IPDM E/R (WITHOUT I-KEY)]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

Fail-Safe

INFOID:0000000009755838

CAN COMMUNICATION CONTROL

When CAN communication with ECM and BCM is impossible, IPDM E/R performs fail-safe control. After CAN

communication recovers normally, it also returns to normal control.

If No CAN Communication Is Available With ECM

If No CAN Communication Is Available With BCM

IGNITION RELAY MALFUNCTION DETECTION FUNCTION

• IPDM E/R monitors the voltage at the contact circuit of the ignition relay inside and ignition switch status

from BCM via CAN communication. 

• IPDM E/R judges the ignition relay error if the voltage differs between the contact circuit and the ignition

switch status from BCM via CAN communication.

• If the ignition relay cannot turn OFF due to contact seizure, it activates the tail lamp relay for 10 minutes to

alert the user to the ignition relay malfunction when the ignition switch is turned OFF.

58

(L)

Ground

Cooling fan relay-3 
power supply

Output

Cooling fan OFF

0 – 1 V

Cooling fan LO operated

4 – 8 V

Cooling fan HI operated

9 – 16 V

62

(R)

Ground

Rear window defogger 
relay power supply

Output

Ignition 
switch 
ON

Rear window defogger switch 
OFF

0 – 1 V

Rear window defogger switch 
ON

9 – 16 V

69

(BR)

Ground

Ignition power supply 
No. 2

Output Ignition switch OFF or ACC

0 – 1 V

Ignition switch ON

6 – 16 V

Terminal NO.

(Wire color)

Description

Condition

Value

(Approx.)

Signal name

Input/

Output

+

–

Control part

Fail-safe operation

Cooling fan

• The cooling fan relay turn ON when the ignition switch is turned ON (Cooling fan HI oper-

ation)

• The cooling fan relay turn OFF when the ignition switch is turned OFF

A/C compressor

A/C relay OFF

Control part

Fail-safe operation

Headlamp

• Turns ON the headlamp low relay when the ignition switch is turned ON
• Turns OFF the headlamp low relay when the ignition switch is turned OFF
• Headlamp high relay OFF

• Parking lamp
• License plate lamp
• Illumination
• Tail  lamp

• Turns ON the tail lamp relay when the ignition switch is turned ON
• Turns OFF the tail lamp relay when the ignition switch is turned OFF

Front wiper motor

• The status just before activation of fail-safe control is maintained until the ignition switch is 

turned OFF while the front wiper is operating at LO or HI speed.

• The wiper is operated at LO speed until the ignition switch is turned OFF if the fail-safe 

control is activated while the front wiper is set in the INT mode and the front wiper motor 
is operating.

• Returns automatically wiper to stop position when ignition switch is turned ON if fail-safe 

control is activated while front wiper motor is operated and wiper stop in the other position 
than stop position.

Front fog lamp

Front fog lamp relay OFF

Horn

Horn OFF

PCS-48

< ECU DIAGNOSIS INFORMATION >

[IPDM E/R (WITHOUT I-KEY)]

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

FRONT WIPER PROTECTION FUNCTION

IPDM E/R detects front wiper stop position by a front wiper stop position signal.

When a front wiper stop position signal is in the conditions listed below, IPDM E/R stops power supply to wiper

after repeating a front wiper 10 seconds activation and 20 seconds stop.

NOTE:

This operation status can be confirmed on the IPDM E/R “Data Monitor” that displays “BLOCK” for the item

“WIP PROT” while the wiper is stopped.

DTC Index

INFOID:0000000009755839

NOTE:

• The details of time display are as follows.

- CRNT: A malfunction is detected now.

- PAST: A malfunction was detected in the past.

• IGN counter is displayed on FFD (Freeze Frame data).

- The number is 0 when is detected now.

- The number increases like 1 

→ 2 ··· 38 → 39 after returning to the normal condition whenever IGN OFF →

ON.

- The number is fixed to 39 until the self-diagnosis results are erased if it is over 39.

×: Applicable

Voltage judgment

IPDM E/R judgment

Operation

Ignition relay contact 

side

Ignition switch status 

from BCM

ON

ON

Ignition relay ON normal

—

OFF

OFF

Ignition relay OFF normal

—

ON

OFF

Ignition relay ON stuck

• Detects DTC “B2098: IGN RELAY ON”
• Turns ON the tail lamp relay for 10 minutes

OFF

ON

Ignition relay OFF stuck

Detects DTC “B2099: IGN RELAY OFF”

Ignition switch

Front wiper switch

Front wiper stop position signal

ON

OFF

The front wiper stop position signal (stop position) cannot be input for 10 seconds.

ON

The front wiper stop position signal does not change for 10 seconds.

CONSULT display

Fail-safe

Refer to

No DTC is detected.
further testing
may be required.

—

—

U1000: CAN COMM CIRCUIT

×

PCS-54

B2098: IGN RELAY ON

×

PCS-55

B2099: IGN RELAY OFF

—

PCS-56