Infiniti M45 (Y34). Manual - part 224

TRUNK CLOSURE SYSTEM

BL-121

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TRUNK CLOSURE SYSTEM

PFP:84622

System Description

AIS001OK

●

When the trunk lid lock latch engaged with striker, trunk room lamp switch turned OFF.
Striker is lowered by means of a motor the trunk lid fully closed.

Removal and Installation of Auto Closure Unit

AIS001OL

REMOVAL

1.

Remove trunk rear finisher. Refer to 

EI-42, "TRUNK ROOM

TRIM & TRUNK LID FINISHER"

 .

2.

Disconnect the harness connector.

3.

Remove the mounting bolt, and remove auto closure unit.

INSTALLATION

Install in the reverse order of removal.
NOTE:
When installing the auto closure unit, be careful not to pinch nearby wiring harnesses.

Component Installation Location

AIS001OM

PIIA0128E

PIIA3236E

BL-122

TRUNK CLOSURE SYSTEM

Wiring Diagram — CLOS —

AIS001MM

TIWA0212E

TRUNK CLOSURE SYSTEM

BL-123

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Terminals and Reference Value for Trunk Closure Control Unit

AIS001MN

Trouble Diagnosis System Chart

AIS001MO

Check Trunk Closure Control Unit

AIS001MP

1. 

CHECK POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect trunk closure control unit connector.

3.

Check voltage between trunk closure control unit connector B55 terminal 2 and ground.

OK or NG

OK

>> GO TO 2

NG >> Check 

the 

following.

●

10A fuse [No.15, located in the fuse block (J/B) No.1]

●

Harness for open or short between trunk closure con-
trol unit and fuse.

2. 

CHECK GROUND CIRCUIT

Check continuity between trunk closure control unit connector B55 terminal 4 and ground.

OK or NG

OK

>> Power supply and ground circuit is OK.

NG

>> Repair or replace harness.

TERMI-

NAL

WIRE 

COLOR

ITEM

CONDITION

VOLTAGE(V)

(Approx.)

1

P

Lock switch signal

Engage the trunk lock (OFF)

Battery voltage

Other than the above (ON)

0

2

PU/W

Battery power supply

—

Battery voltage

4

B

Ground

—

0

5

—

Trunk closure motor ground

—

0

6

—

Trunk closure motor output signal

Trunk closure motor is operation.

Battery voltage

Other than the above.

0

Symptom

Diagnostic procedure

Refer to page

Auto closure does not operate

1. Check trunk closure control unit circuit

BL-123

2. Check trunk room lamp switch

BL-124

3. Check trunk closure motor 

BL-125

4. Replace trunk closure control unit

—

Auto closure does not operating or stops at improper position

Replace trunk closure control unit

—

2 (PU/W) – Ground

: Battery voltage

PIIA2806E

4 (B) – Ground

: Continuity should exist.

PIIA2807E

BL-124

TRUNK CLOSURE SYSTEM

Check Trunk Room Lamp Switch 

AIS001MQ

1. 

CHECK TRUNK ROOM LAMP SWITCH SIGNAL

1.

Turn ignition switch OFF.

2.

Check voltage between trunk closure control unit connector and ground.

OK or NG

OK

>> Trunk room lamp sw is OK.

NG

>> GO TO 2.

2. 

CHECK TRUNK ROOM LAMP SWITCH CIRCUIT

1.

Disconnect trunk closure control unit and trunk room lamp switch connector.

2.

Check continuity between trunk closure control unit connector B55 terminal 1 and trunk room lamp switch
connector B266 terminal 1.

3.

Check continuity between trunk closure control unit connector
B55 terminal 1 and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace harness.

3. 

CHECK TRUNK ROOM LAMP SWITCH GROUND 

Check continuity between trunk room lamp switch connector B266 terminal 2 and ground.

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace harness.

Terminals

Condition

Voltage (V)

(Approx.)

(+)

(–)

Connector

Terminal

(Wire color)

Ground

B55

1 (P)

Engage the latch of trunk lock

Battery

 voltage

Other than the above

0

PIIA2808E

1 (P) – 1 (P) 

: Continuity should exist.

1 (P) – Ground

: Continuity should not exist.

PIIA2809E

2 (B) – Ground

: Continuity should exist.

PIIA2810E