Nissan Pathfinder. Instruction - part 885

PCS-16

< ECU DIAGNOSIS INFORMATION >

[IPDM E/R]

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

37

(W)

Ground Shift N/P

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

38

(P)

Ground Push start switch

Input

Press the push-button ignition switch

0V

Release the push-button ignition switch

Battery voltage

41

(B)

Ground Ground (signal)

—

Ignition switch ON

0V

43

(L)

Ground Ignition signal*

Input

Ignition switch OFF or ACC

0V

Ignition switch ON

Battery voltage

45

(LG)

Ground

Power distribution sensor 
signal-E/R

—

• Ignition switch ON (READY)
• Both A/C switch and blower motor 

switch ON (A/C compressor oper-
ates)

1.0 - 4.0V

47

(Y)

Ground

Power distribution sensor 
power-E/R

—

Ignition switch ON

5V

48

(V)

Ground

Power distribution sensor 
ground-E/R

—

Ignition switch ON

0V

51

(W)

Ground Starter motor 

Output

At engine cranking

Battery voltage

52

(W)

Ground O2 sensor #2

Output

Ignition switch OFF

0V

Ignition switch ON

Battery voltage

53

(W)

Ground O2 sensor #1

Output

Ignition switch OFF

0V

Ignition switch ON

Battery voltage

54

(L)

Ground Injector #1

Output

Ignition switch OFF

0V

Ignition switch ON

Battery voltage

55

(W)

Ground Ignition coil

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

56

(SB)

Ground A/C compressor

Output

Engine 
running

A/C compressor OFF

0V

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

Battery voltage

57

(R)

Ground Electronic throttle control

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

58

(GR)

Ground ECM battery

Output

Ignition switch OFF

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-17

< ECU DIAGNOSIS INFORMATION >

[IPDM E/R]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

59

(L)

Ground Engine solenoid

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

60

(LG)

Ground Injector #2

Output

Ignition switch OFF

0V

Ignition switch ON

Battery voltage

61

(Y)

Ground

Transmission control mod-
ule

Output

Ignition switch OFF

0V

Ignition switch ON

Battery voltage

63

(L)

Ground Inhibit switch

Output

Ignition switch OFF

0V

Ignition switch ON

Battery voltage

64

(LG)

Ground Start IG EGI

Output

Ignition switch OFF

0V

Ignition switch ON

Battery voltage

65

(G)

Ground

Throttle control motor re-
lay

Output

Ignition switch ON 

→ OFF

0 -1.0V 

↓

Battery voltage

↓

0V

Ignition switch ON

0 - 1.0V

66

(G)

Ground N/P switch

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

69

(W)

Ground Fuel pump relay

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

+

−

PCS-18

< ECU DIAGNOSIS INFORMATION >

[IPDM E/R]

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

71

(LG)

Ground Alternator C

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

72

(V)

Ground

ECM relay
(Self shut-off)

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

74

(R)

Ground Washer motor

Output

Ignition switch ON

Battery voltage

75

(R)

Ground Headlamp LO RH

Output

Ignition 
switch ON

Lighting switch OFF

0V

Lighting switch 2ND

Battery voltage

76

(L)

Ground Headlamp LO LH

Output

Ignition 
switch ON

Lighting switch OFF

0V

Lighting switch 2ND

Battery voltage

78

(W)

Ground Front fog lamp RH

Output

Ignition 
switch ON

Fog lamp switch OFF

0V

Fog lamp switch ON

Battery voltage

79

(L)

Ground Front fog lamp LH

Output

Ignition 
switch ON

Fog lamp switch OFF

0V

Fog lamp switch ON

Battery voltage

80

(W)

Ground Headlamp HI RH

Output

Ignition 
switch ON

• Lighting switch HI
• Lighting switch PASS

Battery voltage

Lighting switch OFF

0V

81

(G)

Ground Headlamp HI LH

Output

Ignition 
switch ON

• Lighting switch HI
• Lighting switch PASS

Battery voltage

Lighting switch OFF

0V

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-19

< ECU DIAGNOSIS INFORMATION >

[IPDM E/R]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

*: Ignition battery saver logic turns OFF the IPDM E/R and BCM if the ignition is ON for 30 minutes with the engine OFF.

Fail Safe

INFOID:0000000009175191

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 BCM

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 ignition switch is turned OFF.

82

(P)

Ground

Power distribution sensor 
signal-fem

—

• Ignition switch ON (READY)
• Both A/C switch and blower motor 

switch ON (electric compressor oper-
ates)

1.0 - 4.0V

83

(G)

Ground

Power distribution sensor 
power-fem

—

Ignition switch ON

5V

85

(P)

Ground

Daytime running lamps re-
lay

Output

Ignition 
switch ON

Daytime light system ac-
tive

Battery voltage

Ignition 
switch ON

Daytime light system inac-
tive

0V

86

(L)

Ground

Power distribution sensor 
ground-fem

—

Ignition switch ON

0V

90

(LG)

Ground Clearance lamps

Output

Ignition 
switch ON

Lighting switch 1ST

Battery voltage

Lighting switch OFF

0V

93

(V)

Ground Fan motor PWM

Output

Engine idling

0-5V

94

(LG)

Ground Hood switch 2

Input

Ignition 
switch ON

Hood closed

0V

Hood open

Battery voltage

96

(R)

Ground Hood switch

Input

Ignition 
switch ON

Hood closed

0V

Hood open

Battery voltage

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

Signal name

Input/ 

Output

+

−

Control part

Fail-safe in 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  lamps
• Side marker lamps
• License plate lamps
• Tail lamps

• 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

• 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.

Horn

Horn OFF

Ignition relay

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