Nissan Leaf. Manual - part 983

PCS

IPDM E/R

PCS-15

< ECU DIAGNOSIS INFORMATION >

[IPDM E/R]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

TERMINAL LAYOUT

PHYSICAL VALUES

JMMIA0617ZZ

Terminal NO.

(Wire color)

Description

Condition

Value

(Approx.)

Signal name

Input/

Output

+

–

1

(R)

Ground

Battery power supply

Input

Power switch OFF

Battery voltage

2

(G)

Ground

Battery power supply

Input

Power switch OFF

Battery voltage

9

(B)

Ground

Ground

—

Power switch ON

0 – 1 V

14

(R)

Ground

Rear window defogger

Output

Power 
switch 
ON

Rear window defogger switch 
OFF

0 – 1 V

Rear window defogger switch 
ON

Battery voltage

18

(B/W)

Ground

Ground

—

Power switch ON

0 – 1 V

19

(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

Battery voltage

20

(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

Battery voltage

PCS-16

< ECU DIAGNOSIS INFORMATION >

[IPDM E/R]

IPDM E/R

25

(R)

Ground

Front wiper stop position

Input

Power 
switch 
ON

Front wiper stop position

0 – 1.5 V

Any position other than front 
wiper stop position

Battery voltage

26

(P)

Ground

CAN-L

Input/

Output

—

—

27

(L)

Ground

CAN-H

Input/

Output

—

—

28

1

(G)

Ground

Daytime running light relay 
control

Output

Daytime running light deactivated

Battery voltage

Daytime running light activated

0 – 1 V

32

(SB)

Ground

Hood switch

Input

Close the hood

Battery voltage

Open the hood

0 – 1 V

34

(R)

Ground

Vehicle security horn relay 
control

Output

Vehicle security horn relay is deactivated

Battery voltage

Vehicle security horn relay is activated

0 – 1 V

35

(R)

Ground

VCM relay power supply

Output

Power switch OFF
(More than a few seconds after turning pow-
er switch OFF)

0 – 1 V

• Power switch ON
• Power switch OFF

(For a few seconds after turning power 
switch OFF)

Battery voltage

38

2

(LG)

Ground

Rear combination lamp RH 
and illumination

Output

Lighting switch OFF

0 – 1 V

38

3

(R)

Lighting switch 1ST

Battery voltage

39

(L)

Ground

Front wiper HI

Output

Power 
switch 
ON

Front wiper switch OFF

0 – 1 V

Front wiper switch HI

Battery voltage

41

(SB)

Ground

VCM relay control

Output

Power switch OFF
(More than a few seconds after turning pow-
er switch OFF)

Battery voltage

• Power switch ON
• Power switch OFF

(For a few seconds after turning power 
switch OFF)

0 – 1 V

42

(BR)

Ground

VCM power supply

Output Power switch OFF

Battery voltage

43

(O)

Ground

Parking lamp LH

Output

Lighting switch OFF

0 – 1 V

Lighting switch 1ST

Battery voltage

44

(B)

Ground

Rear combination lamp LH

Output

Lighting switch OFF

0 – 1 V

Lighting switch 1ST

Battery voltage

45

(Y)

Ground

Front wiper LO

Output

Power 
switch 
ON

Front wiper switch OFF

0 – 1 V

Front wiper switch LO

Battery voltage

49

(Y)

Ground

Headlamp HI (RH)

Output

Lighting 
switch 
2ND or 
AUTO

Lighting switch OFF

0 – 1 V

• Lighting switch HI
• Lighting switch PASS

Battery voltage

50

(G)

Ground

Headlamp HI (LH)

Output

Lighting 
switch 
2ND or 
AUTO

Lighting switch OFF

0 – 1 V

• Lighting switch HI
• Lighting switch PASS

Battery voltage

Terminal NO.

(Wire color)

Description

Condition

Value

(Approx.)

Signal name

Input/

Output

+

–

PCS

IPDM E/R

PCS-17

< ECU DIAGNOSIS INFORMATION >

[IPDM E/R]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

1

: For Canada

2

: Without solar cell

3

: With solar cell

Fail-Safe

INFOID:0000000010120290

CAN COMMUNICATION CONTROL

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

cation recovers normally, it also returns to normal control.

If No CAN Communication Is Available With BCM

51

(L)

Ground

Headlamp LO (LH)

Output

Lighting switch OFF

0 – 1 V

Lighting switch 2ND and AUTO (light is illu-
minated)

Battery voltage

52

(P)

Ground

Headlamp LO (RH)

Output

Lighting switch OFF

0 – 1 V

Lighting switch 2ND and AUTO (light is illu-
minated)

Battery voltage

55

(LG)

Ground

F/S relay power supply

Output

Power switch OFF
(More than a few seconds after turning pow-
er switch OFF)

0 – 1 V

• Power  switch  ON
• Power  switch  OFF

(For a few seconds after turning power 
switch OFF)

Battery voltage

57

(R)

Ground

Ignition relay power supply

Output

Power switch OFF or ACC

0 – 1 V

Power switch ON

Battery voltage

58

(O)

Ground

Ignition relay power supply

Output

Power switch OFF or ACC

0 – 1 V

Power switch ON

Battery voltage

59

(BR)

Ground

PDM relay power supply

Output

Power switch OFF or ACC

0 – 1 V

Power switch ON

Battery voltage

60

(GR)

Ground

F/S relay control

Output

Power switch OFF or ACC

Battery voltage

Power switch ON

0 – 1 V

62

(V)

Ground

Ignition relay power supply

Output

Power switch OFF or ACC

0 – 1 V

Power switch ON

Battery voltage

64

(W)

Ground

Detent switch

Input

Power 
switch 
ON

Shift position in P position

0 – 1 V

Shift position in any position 
other than P

Battery voltage

66

(W)

Ground

Power switch

Input

Press the power switch

0 – 1 V

Release the power switch

Battery voltage

68

(O)

Ground

Ignition relay control

Input

Power switch OFF or ACC

Battery voltage

Power switch ON

0 – 1 V

Terminal NO.

(Wire color)

Description

Condition

Value

(Approx.)

Signal name

Input/

Output

+

–

PCS-18

< ECU DIAGNOSIS INFORMATION >

[IPDM E/R]

IPDM E/R

IGNITION RELAY MALFUNCTION DETECTION FUNCTION

• IPDM E/R monitors the voltage at the contact circuit and excitation coil circuit of the ignition relay inside it. 

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

coil circuit.

• 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 power switch is turned OFF.

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:0000000010120291

NOTE:

• The details of time display are as follows.

- CRNT: A malfunction is detected now.

- PAST: A malfunction was detected in the past.

Control part

Fail-safe operation

Headlamp

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

• Parking  lamp
• License plate lamp
• Illumination
• Tail lamp
• Side marker lamp

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

Front wiper motor

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

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

• The wiper is operated at LO speed until the power 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 power switch is turned ON if fail-safe control is acti-

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

• The status is held at service position if the fail-safe control is activated while the service position function 

is operating.

Front fog lamp

Front fog lamp relay OFF

Rear window defogger

Rear window defogger relay OFF

Horn

Horn relay OFF

Ignition relay

The status just before activation of fail-safe is maintained.

Voltage judgment

IPDM E/R judgment

Operation

Ignition relay contact 

side

Ignition relay excitation 

coil side

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”

Power 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.