Infiniti F50. Manual - part 222

 

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Infiniti F50. Manual - part 222

 

 

AUTO TRUNK SYSTEM

BL-135

C

D

E

F

G

H

J

K

L

M

A

B

BL

TIWT0015E

BL-136

AUTO TRUNK SYSTEM

Terminals and Reference Value For Auto Trunk Control Unit

EIS0055Q

Preliminary Check

EIS0055R

Trunk opener switch can unlock the trunk in regular mode.

Trunk lid opener cancel switch is ON.

Trunk lid can be open/closed properly with manual operation.

Terminal

Wire color

Item

Condition

Voltage (V)

(Approx.)

3

G/OR

Detention switch

Vehicle 
key in 
inserted

A/T selector lever in P position

0

A/T selector lever in other position 

Battery voltage

4

R/L

Trunk buzzer

Buzzer OFF

Battery voltage

Buzzer ON

0

5

G/Y

Remote control trunk 
open signal

Remote controller trunk switch (ON) 

 5 

 0 

 5

6

Y/R

Trunk lid opener switch

OFF

 ON (OPEN)

 0

7

BR/W

Speed signal

Speedometer operation (the vehicle speed is 
approx. 40 km/h).

W/R

Trunk lid close switch

Trunk lid close switch ON 

0

Trunk lid close switch OFF

5

10 Y/B

Weather strip detection 
switch

Trunk lid is between just before fully closed 
position and fully closed position (OFF)

5

Other than above (ON)

0

11

L/Y

Lid full up position 
switch

Trunk lid fully opened position (ON)

0

Other than above (OFF)

5

12

Trunk lid lock switch

Engage the latch of trunk lock (lock)

5

Engage the latch of trunk lock (unlock)

0

13

L/OR

Clutch solenoid

Trunk auto operation

0

Other than above

Battery voltage

14

L/R

Encoder power supply

Battery voltage

15

Y

Encoder pulse signal

Trunk motor operation

16 R/W

Encoder 

ground

0

17 

PU

BAT power supply

Battery voltage

18

B

Ground

 0

20 G/W

Trunk motor OPEN 
signal

When trunk lid auto open operates 

Battery voltage

Other than above

0

21 L/W

Trunk motor CLOSE 
signal

When trunk lid auto close operates

Battery voltage

Other than above

0

PIIA0536E

OCC3383D

AUTO TRUNK SYSTEM

BL-137

C

D

E

F

G

H

J

K

L

M

A

B

BL

Symptom Chart

EIS0055S

Auto Trunk Control Unit Power Supply and Ground Circuit Check

EIS0055T

1. 

CHECK POWER SUPPLY CIRCUIT 

1.

Turn ignition switch OFF.

2.

Disconnect auto trunk control unit connector.

3.

Check voltage between auto trunk control unit harness connector B111 terminal 17 and ground.

OK or NG

OK

>> GO TO 2.

NG

>> Check the following.

20A fuse [No.15, located in fuse block (J/B) No.1]

Harness for open or short between auto trunk control
unit and fuse.

Symptom

Malfunctioning system and reference

Refer to page

Trunk lid auto OPEN/CLOSE operation does not work.

1. Auto trunk control unit power supply and 
ground circuit check

BL-137

2. Vehicle speed signal check

DI-23

3. Detention switch check

BL-138

4. Trunk motor check

BL-140

5. Clutch solenoid check 

BL-140

6. Weather strip detection switch check

BL-143

7. Lid full up position switch check

BL-144

8. Replace auto trunk control unit

BL-130

Trunk lid auto OPEN operation does not work with the trunk lid 
opener switch.

1.Trunk lid opener switch check

BL-145

2.Trunk cancel switch check

BL-88

3. Replace auto trunk control unit

BL-130

Trunk lid auto OPEN operation does not work with remote control-
ler trunk switch.
(Door locking/unlocking operation with remote control is normal.)

1.Trunk open signal check

BL-147

2.Trunk motor check

BL-140

3. Replace auto trunk control unit

BL-130

Trunk lid stops during auto OPEN/CLOSE operation.

1.Trunk motor check

BL-140

2.Clutch solenoid check

BL-140

3.Replace auto trunk control unit

BL-130

Trunk lid auto CLOSE operation does not work with trunk lid close 
switch.

1.Trunk lid close switch check

BL-141

2.Replace auto trunk control unit

BL-130

Trunk lid stops immediately after auto CLOSE operation starts

1.Encoder circuit check

BL-148

2.Replace auto trunk control unit.

BL-130

17 (PU) – Ground

: Battery voltage

PIIA2937E

BL-138

AUTO TRUNK SYSTEM

2. 

CHECK GROUND CIRCUIT 

Check continuity between auto trunk control unit harness connector B111 terminal 18 and ground.

OK or NG

OK

>> Auto trunk control unit power supply and ground circuit

is OK.

NG

>> Repair or replace harness.

Detention Switch Check

EIS0055U

1. 

CHECK DETENT SWITCH SIGNAL

Check voltage between auto trunk control unit connector and ground.

OK or NG

OK

>> Detent switch is OK.

NG

>> GO TO 2.

2. 

CHECK HARNESS CONTINUITY

1.

Turn ignition switch OFF.

2.

Disconnect auto trunk control unit and detention switch connector.

3.

Check continuity between auto trunk control unit connector B110 terminal 3 and detention switch connec-
tor M97 terminal 7.

4.

Check continuity between auto trunk control unit connector B110
terminal 3 and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace harness.

18 (B) –  Ground

: Continuity should exist.

PIIB0186E

Connector

Terminals (Wire color)

Condition

Voltage (V)

(Approx.)

(+)

(-)

B110

3 (G/OR)

Ground

A/T selector lever 
in P position

0

Other than above

Battery voltage

PIIA2939E

3 (G/OR) – 7 (G/OR)

: Continuity should exist.

3 (G/OR) – Ground

: Continuity should not exist.

PIIA2940E

 

 

 

 

 

 

 

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