Infiniti FX35, FX50 (S51). Manual - part 498

HALF LATCH SWITCH

DLK-115

< DTC/CIRCUIT DIAGNOSIS >

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HALF LATCH SWITCH

Description

INFOID:0000000005239630

The half latch switch is integrated in the back door lock assembly and it detects the half latch condition of the
back door lock.

Diagnosis Procedure

INFOID:0000000005239631

1.

CHECK BACK DOOR CONTROL UNIT OUTPUT

1.

Turn ignition switch OFF.

2.

Disconnect back door lock assembly connector.

3.

Check voltage between back door lock assembly harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

CHECK HALF LATCH SWITCH CIRCUIT

1.

Disconnect back door control unit connector.

2.

Check continuity between back door control unit harness connector.

3.

Check continuity between back door control unit harness connector and ground.

Is the inspection result normal?

YES

>> Replace back door control unit. Refer to 

DLK-285, "Removal and Installation"

.

NO

>> Repair or replace harness.

3.

CHECK HALF LATCH SWITCH GROUND CIRCUIT

Check continuity between back door lock assembly harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace harness.

4.

CHECK HALF LATCH SWITCH

Refer to 

DLK-116, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace back door lock assembly. Refer to 

DLK-277, "Removal and Installation"

.

(–)

(–)

Voltage (V)

(Approx.)

Half latch switch

Connector

Terminal

D122

6

Ground

Battery voltage

Back door control unit

Back door lock assembly

Continuity 

 Connector

Terminal

 Connector

Terminal

D123

2

D122

6

Existed

Back door control unit

Ground

Continuity 

 Connector

Terminal

D123

2

Not existed

Back door lock assembly

Ground

Continuity 

 Connector

Terminal

D122

8

Existed

DLK-116

< DTC/CIRCUIT DIAGNOSIS >

HALF LATCH SWITCH

5.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-36, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000005239632

COMPONENT INSPECTION

1.

CHECK HALF LATCH SWITCH

Check back door lock assembly (half latch switch).

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace back door lock assembly. Refer to 

DLK-277, "Removal and Installation"

.

Terminal

Back door lock position

Continuity

Back door lock assembly (half latch switch) connector

6

8

Open

Existed

Fully closed/Half latch

Not existed

BACK DOOR CLOSURE MOTOR

DLK-117

< DTC/CIRCUIT DIAGNOSIS >

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BACK DOOR CLOSURE MOTOR

Description

INFOID:0000000005239633

The back door lock assembly consists of the open switch, close switch, half latch switch and closure motor.
The back door control unit determines the back door lock condition according to the signal from each switch
and performs the open/close operation of closure motor.

Diagnosis Procedure

INFOID:0000000005239634

1.

CHECK BACK DOOR CLOSURE MOTOR CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect back door control unit connector and back door lock assembly connector.

3.

Check continuity between back door control unit harness connector and back door lock assembly harness
connector. 

4.

Check continuity between back door control unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace harness.

2.

CHECK BACK DOOR CLOSURE MOTOR CIRCUIT

1.

Connect back door control unit connector and back door lock assembly connector.

2.

Check voltage between back door unit harness connector and ground. 

Is the inspection result normal?

YES

>> Replace back door lock assembly. Refer to 

DLK-277, "Removal and Installation"

.

NO

>> Replace back door control unit. Refer to 

DLK-285, "Removal and Installation"

.

Back door control unit

Back door lock assembly

Continuity 

 Connector

Terminal

 Connector

Terminal

D123

4

D122

1

Not existed

2

Existed

10

1

Existed

2

Not existed

Back door control unit

Ground

Continuity 

 Connector

Terminal

D123

4

Not existed

10

(+)

(–)

Condition

Voltage (V)

(Approx.) 

Back door control unit

 Connector

Terminal

D123

4

Ground

Back door closure

Close operation

Battery voltage

Other than above

0

10

Open operation

Battery voltage

Other than above

0

DLK-118

< DTC/CIRCUIT DIAGNOSIS >

INTEGRATED HOMELINK TRANSMITTER

INTEGRATED HOMELINK TRANSMITTER

Description

INFOID:0000000005239635

Integrated Homelink Transmitter can store and transmit a maximum of 3 radio signals.
Allows operation of garage doors, gates, home and office lighting, entry door locks and security system, etc.
Integrated Homelink Transmitter power supply uses vehicle battery, which enables it to maintain every pro-
gram in case battery is discharged or removed.

Component Function Check

INFOID:0000000005239636

1.

CHECK FUNCTION

Check that system receiver (garage door opener, etc.) operates with original hand-held transmitter.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Receiver or hand-held transmitter is malfunctioning.

2.

CHECK ILLUMINATE

1.

Turn ignition switch OFF.

2.

Does red light of transmitter illuminate when any transmitter button is pressed?

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Refer to 

DLK-118, "Diagnosis Procedure"

.

3.

CHECK TRANSMITTER

Check transmitter with Tool*.
*:For details, refer to Technical Service Bulletin.

Is the inspection result normal?

YES

>> Receiver or hand-held transmitter malfunction, not vehicle related.

NO

>> Replace auto anti-dazzling inside mirror (homelink universal transceiver). Refer to 

MIR-77,

"Removal and Installation"

 (with ADP) or 

MIR-99, "Removal and Installation"

 (Without ADP).

Diagnosis Procedure

INFOID:0000000005239637

1.

CHECK POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Disconnect auto anti-dazzling inside mirror (homelink universal transceiver) connector.

3.

Check voltage between auto anti-dazzling inside mirror (home link universal transceiver) harness connec-
tor and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>>

Check the following items.

• 10A fuse [No. 3 located in the fuse block (J/B)]
• 10A fuse [No. 6 located in the fuse block (J/B)]
• Harness for open or short between fuse and auto anti-dazzling inside mirror (homelink universal

transceiver).

2.

CHECK GROUND CIRCUIT

Check continuity between auto anti-dazzling inside mirror (homelink universal transceiver) harness connector
and ground.

Auto anti-dazzling inside mirror

(Homelink universal transceiver) 

connector

Terminal Condition

Voltage (V)

(Approx.)

R3

10

Ground

Ignition switch position: 
OFF

Battery voltage

6

Ignition switch position: 
ON