Infiniti QX56 (JA60). Manual - part 866

 

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Infiniti QX56 (JA60). Manual - part 866

 

 

SEC-110

< ECU DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

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

Terminal

Wire

color

Signal name

Signal 

input/

output

Measuring condition

Reference value

(Approx.)

Igni-

tion 

switch

Operation or condition

1

B/Y

Battery power supply

Input

OFF

Battery voltage

2

R

Battery power supply

Input

OFF

Battery voltage

3

BR

ECM relay

Output

Ignition switch ON or START

Battery voltage

Ignition switch OFF or ACC

0V

4

W/L

ECM relay

Output

Ignition switch ON or START

Battery voltage

Ignition switch OFF or ACC

0V

6

L

Throttle control motor 
relay

Output

Ignition switch ON or START

Battery voltage

Ignition switch OFF or ACC

0V

7

W/B

ECM relay control

Input

Ignition switch ON or START

0V

Ignition switch OFF or ACC

Battery voltage

8

R/B

Fuse 54

Output

Ignition switch ON or START

Battery voltage

Ignition switch OFF or ACC

0V

10

G

Fuse 45
(Canada only)

Output

ON

Daytime light system active

0V

Daytime light system inactive

Battery voltage

11

Y/B

A/C compressor

Output

ON or 

START

A/C switch ON or defrost A/C 
switch

Battery voltage

A/C switch OFF or defrost A/C 
switch

0V

12

L/W

Ignition switch sup-
plied power

Input

OFF or ACC

0V

ON or START

Battery voltage

13

B/Y

Fuel pump relay

Output

Ignition switch ON or START

Battery voltage

Ignition switch OFF or ACC

0V

14

Y/R

Fuse 49

Output

Ignition switch ON or START

Battery voltage

Ignition switch OFF or ACC

0V

15

LG/B

Fuse 50

Output

Ignition switch ON or START

Battery voltage

Ignition switch OFF or ACC

0V

16

G

Fuse 51

Output

Ignition switch ON or START

Battery voltage

Ignition switch OFF or ACC

0V

17

W

Fuse 55

Output

Ignition switch ON or START

Battery voltage

Ignition switch OFF or ACC

0V

19

W/R

Starter motor

Output

START

Battery voltage

21

BR

Ignition switch sup-
plied power

Input

OFF or ACC

0V

START

Battery voltage

22

G

Battery power supply

Output

OFF

Battery voltage

23

GR/W

Door mirror defogger 
output signal

Output

When rear defogger switch is 
ON

Battery voltage

When raker defogger switch is 
OFF

0V

24

L

Cooling fan relay

Output

Conditions correct for cooling 
fan operation

Battery voltage

Conditions not correct for 
cooling fan operation

0V

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

SEC-111

< ECU DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

26

P/L

Headlamp aiming mo-
tors

Output

Lighting 
switch 2nd 
position or 
AUTO, head-
lamp aiming 
switch in po-
sition

OFF

0V

ON

Battery voltage

27

W/B

Fuse 38
(With trailer tow)

Output

Ignition switch ON or START

Battery voltage

Ignition switch OFF or ACC

0V

30

W

Fuse 53

Output

Ignition switch ON or START

Battery voltage

Ignition switch OFF or ACC

0V

32

L

Wiper low speed sig-
nal

Output

ON or 

START

Wiper switch

OFF

Battery voltage

LO or INT

0V

35

L/B

Wiper high speed sig-
nal

Output

ON or 

START

Wiper switch

OFF, LO, INT

Battery voltage

HI

0V

37

Y

Power generation 
command signal

Output

Ignition switch ON

6.3 V

40% is set on "Active test," 
"ALTERNATOR DUTY" of 
"ENGINE"

3.8 V

40% is set on "Active test," 
"ALTERNATOR DUTY" of 
"ENGINE"

1.4 V

38

B

Ground

Input

0V

39

L

CAN-H

ON

40

P

CAN-L

ON

41

Y/B

Hood switch

Input

Hood closed

OFF

0V

Hood open

ON

Battery voltage

42

GR

Oil pressure switch

Input

Engine running

Battery voltage

Engine stopped

0V

Terminal

Wire

color

Signal name

Signal 

input/

output

Measuring condition

Reference value

(Approx.)

Igni-

tion 

switch

Operation or condition

JPMIA0001GB

JPMIA0002GB

JPMIA0003GB

SEC-112

< ECU DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

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

43

L/Y

Wiper auto stop signal

Input

ON or 

START

Wiper switch

OFF, LO, INT

Battery voltage

44

BR

Daytime light relay 
control
(Canada only)

Input

ON

Daytime light system active

0V

Daytime light system inactive

Battery voltage

45

G/W

Horn relay control

Input

ON

When door locks are operated 
using Intelligent Key (OFF 

→ 

ON)*

Battery voltage 

→ 0V

46

GR

Fuel pump relay con-
trol

Input

Ignition switch ON or START

0V

Ignition switch OFF or ACC

Battery voltage

47

O

Throttle control motor 
relay control

Input

Ignition switch ON or START

0V

Ignition switch OFF or ACC

Battery voltage

48

B/R

Starter relay (inhibit 
switch)

Input

ON or 

START

Selector lever in "P" or "N"

0V

Selector lever any other posi-
tion

Battery voltage

49

R/L

Trailer tow relay
(With trailer tow)
Illumination
(Without trailer tow)

Output

ON

Lighting 
switch must 
be in the 1st 
position

OFF

0V

ON

Battery voltage

50

W/R

Front fog lamp (LH)

Output

ON or 

START

Lighting 
switch must 
be in the 2nd 
position 
(LOW beam 
is ON) and 
the front fog 
lamp switch

OFF

0V

ON

Battery voltage

51

W/R

Front fog lamp (RH)

Output

ON or 

START

Lighting 
switch must 
be in the 2nd 
position 
(LOW beam 
is ON) and 
the front fog 
lamp switch

OFF

0V

ON

Battery voltage

52

L

LH low beam head-
lamp

Output

Lighting switch in 2nd position

Battery voltage

54

R/Y

RH low beam head-
lamp

Output

Lighting switch in 2nd position

Battery voltage

55

G

LH high beam head-
lamp

Output

Lighting switch in 2nd position 
and placed in HIGH or PASS 
position

Battery voltage

56

Y

(With 

DTRL)

L/W

(Without 

DTRL)

RH high beam head-
lamp

Output

Lighting switch in 2nd position 
and placed in HIGH or PASS 
position

Battery voltage

57

R/L

Parking, license, and 
tail lamp

Output

ON

Lighting 
switch 1st po-
sition

OFF

0V

ON

Battery voltage

59

B

Ground

Input

0V

Terminal

Wire

color

Signal name

Signal 

input/

output

Measuring condition

Reference value

(Approx.)

Igni-

tion 

switch

Operation or condition

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

SEC-113

< ECU DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

*: When horn reminder is ON

Fail Safe

INFOID:0000000005282721

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 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.

NOTE:
The tail lamp turns OFF when the ignition switch is turned ON.

FRONT WIPER CONTROL

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

60

B/W

Rear window defog-
ger relay

Output

ON or 

START

Rear defogger switch ON

Battery voltage

Rear defogger switch OFF

0V

61

BR

Fuse 32
(With trailer tow)

Output

OFF

Battery voltage

Terminal

Wire

color

Signal name

Signal 

input/

output

Measuring condition

Reference value

(Approx.)

Igni-

tion 

switch

Operation or condition

Control part

Fail-safe in operation

Cooling fan

• Turns ON the cooling fan relay when the ignition switch is turned ON
• Turns OFF the cooling fan relay when the ignition switch is turned OFF

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 LH/RH relays OFF

• Parking  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.

Rear window defogger

Rear window defogger relay OFF

A/C compressor

A/C relay OFF

Front fog lamps

Front fog lamp relay OFF

Ignition switch

Ignition relay

Tail lamp relay

ON

ON

OFF

OFF

 

 

 

 

 

 

 

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