Infiniti Q45. Manual - part 220

AUTO TRUNK SYSTEM

BL-149

C

D

E

F

G

H

J

K

L

M

A

B

BL

4. 

CHECK WEATHERSTRIP DETECTION SWITCH

Check continuity between auto trunk motor terminals 1 and 4.

OK or NG

OK

>> Replace auto trunk control unit.

NG

>> Replace auto trunk motor.

Lid Full Up Position Switch Check

NIS000WJ

1. 

CHECK LID FULL UP POSITION SWITCH SIGNAL

Check voltage between auto trunk control unit connector and ground.

OK or NG

OK

>> Lid full up position switch is OK.

NG

>> GO TO 2.

2. 

CHECK HARNESS CONTINUITY 

1.

Turn ignition switch OFF.

2.

Disconnect auto trunk control unit and auto trunk motor connector.

3.

Check continuity between auto trunk control unit connector B110 terminal 11 and auto trunk motor con-
nector B109 terminal 2.

4.

Check continuity between auto trunk control unit connector B110
terminal 11 and ground.

OK or NG 

OK

>> GO TO 3.

NG

>> Repair or replace harness.

Terminals Condition

Continuity

1

4

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

No

Other than above

Yes

PIIA2957E

Connector

Terminals (Wire color)

Condition

Voltage (V)

(Approx.)

(+)

(-)

B110

11 (L/Y)

Ground

Trunk lid fully opened 
position (ON)

0

Other than above (OFF)

5

PIIA2958E

11 (L/Y) – 2 (L/Y)

: Continuity should exist.

11 (L/Y) – Ground

: Continuity should not exist.

PIIB0249E

BL-150

AUTO TRUNK SYSTEM

3. 

GROUND CIRCUIT CHECK

Check continuity between auto trunk motor connector B109 terminal 4 and ground.

OK or NG 

OK

>> GO TO 4.

NG

>> Repair or replace harness.

4. 

CHECK LID FULL UP POSITION SWITCH 

Check continuity between auto trunk motor terminals 2 and 4.

OK or NG

OK

>> Replace auto trunk control unit.

NG

>> Replace auto trunk motor.

Trunk Lid Opener Switch Check

NIS000WK

1. 

CHECK TRUNK LID OPENER SWITCH SIGNAL 

Check voltage between auto trunk control unit connector and ground.

OK or NG

OK

>> Trunk lid opener switch is OK.

NG

>> GO TO 2.

4 (B) – Ground

: Continuity should exist.

PIIA2956E

Terminals

Condition

Continuity

2

4

Trunk lid fully opened position (ON)

Yes

Other than above

No

PIIA2960E

Connector

Terminals (Wire color)

Condition

Voltage (V)

(Approx.)

(+)

(-)

B110 6 

(Y/R)

Ground

Trunk lid opener switch 
pressed (ON)

0

Other than above (OFF)

5

PIIA2961E

AUTO TRUNK SYSTEM

BL-151

C

D

E

F

G

H

J

K

L

M

A

B

BL

2. 

CHECK HARNESS CONTINUITY 

1.

Turn ignition switch OFF.

2.

Disconnect auto trunk control unit and trunk lid opener switch connector.

3.

Check continuity between auto trunk control unit connector B110 terminal 6 and trunk lid and fuel lid
opener switch connector D9 terminal 3.

4.

Check continuity between auto trunk control unit connector B110
terminal 6 and ground.

OK or NG 

OK

>> GO TO 3.

NG

>> Repair or replace harness.

3. 

CHECK TRUNK LID OPENER SWITCH GROUND CIRCUIT

Check continuity between trunk lid and fuel lid opener switch connector D9 terminal 2 and ground.

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace harness.

4. 

CHECK TRUNK LID OPENER SWITCH

Check continuity between trunk lid opener switch terminals 2 and 3.

OK or NG

OK

>> Replace auto trunk control unit.

NG

>> Replace trunk lid opener switch.

6 (Y/R) – 3 (Y/R)

: Continuity should exist.

6 (Y/R) – Ground

: Continuity should not exist.

PIIB0193E

2 (B) – Ground

: Continuity should exist.

PIIB0194E

Terminals Condition

Continuity

2

3

Trunk lid opener switch pressed (ON)

Yes

Other than above (OFF)

No

PIIB0195E

BL-152

AUTO TRUNK SYSTEM

Trunk Open Signal Check

NIS000WL

1. 

CHECK ELECTRONIC KEY TRUNK OPENING SIGNAL

Check voltage between auto trunk control unit connector B110 terminal 5 and ground.

OK or NG

OK

>> Trunk open signal is OK.

NG

>> GO TO 2.

2. 

CHECK HARNESS CONTINUITY

1.

Turn ignition switch OFF.

2.

Disconnect BCM and auto trunk control unit connector.

3.

Check continuity between BCM connector M4 terminal 1 and auto trunk control unit connector B110 termi-
nal 5.

4.

Check continuity between BCM connector M4 terminal 1 and
ground.

OK or NG 

OK

>> GO TO 3.

NG

>> Repair or replace harness.

3. 

CHECK AUTO TRUNK CONTROL UNIT OUTPUT SIGNAL

1.

Connect auto trunk control unit connector.

2.

Check voltage between auto trunk control unit connector B110 terminal 5 and ground.

OK or NG

OK

>> Check the condition of the harness and the connector.

NG

>> Replace auto trunk control unit.

Connector

Terminals (Wire color)

Condition

Voltage (V)

(Approx.)

(+)

(-)

B110

5 (G/Y)

Ground

Trunk button on electronic 
key ON

5 

→

 0 

→

 5

Other than above 

5

PIIA2965E

1 (G/Y) – 5 (G/Y)

: Continuity should exist.

1 (G/Y) – Ground

: Continuity should not exist.

PIIB0251E

5 (G/Y) – Ground

: Approx. 5V

PIIA2965E