Infiniti Q45. Manual - part 193

 

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Infiniti Q45. Manual - part 193

 

 

POWER DOOR LOCK SYSTEM

BL-41

C

D

E

F

G

H

J

K

L

M

A

B

BL

COMMUNICATION SYSTEM A

1. 

BCM INSPECTION

Replace the malfunctioning BCM with a known-good one, and carry out the communication diagnosis.
Refer to 

BL-36, "IVMS COMMUNICATION INSPECTION"

  (with CONSULT-II), 

BL-39, "COMMUNICATION

DIAGNOSIS"

  (without CONSULT-II).

OK or NG

OK

>> Replace BCM.

NG

>> GO TO 2.

2. 

LCU INSPECTION

1.

Replace the previously installed BCM.

2.

Replace the LCU with a known-good one, and carry out the communication diagnosis.
Refer to 

BL-36, "IVMS COMMUNICATION INSPECTION"

  (with CONSULT-II), 

BL-39, "COMMUNICA-

TION DIAGNOSIS"

  (without CONSULT-II).

OK or NG

OK

>> Replace LCU.

NG

>> Repair communication harness between the indicated LCU and BCM.

COMMUNICATION SYSTEM B

1. 

CONNECTOR INSPECTION

Check the terminals (at the control unit and harness) on the malfunctioning LCU for disconnection, bend, and
other malfunctions.

OK or NG

OK

>> GO TO 2.

NG

>> Repair the terminals and connectors.

2. 

LCU INSPECTION

Replace the LCU with a known-good one, and carry out the communication diagnosis.
Refer to 

BL-36, "IVMS COMMUNICATION INSPECTION"

  (with CONSULT-II), 

BL-39, "COMMUNICATION

DIAGNOSIS"

  (without CONSULT-II).

OK or NG

OK

>> Replace LCU.

NG

>> Repair communication harness between the indicated LCU and BCM.

COMMUNICATION SYSTEM C

1. 

CONNECTOR INSPECTION

Check the terminals (at the control unit and harness) on BCM and LCU for disconnection, bend, misalignment,
and other malfunctions.

OK or NG

OK

>> GO TO 2.

NG

>> Repair terminals and connectors.

2. 

BCM INSPECTION

Replace the BCM with a known-good one, and carry out the communication diagnosis. Refer to 

BL-36, "IVMS

COMMUNICATION INSPECTION"

  (with CONSULT-II), 

BL-39, "COMMUNICATION DIAGNOSIS"

  (without

CONSULT-II).

OK or NG

OK

>> Replace BCM.

NG

>> Repair the communication harness between LCU and BCM.

BL-42

POWER DOOR LOCK SYSTEM

SWITCH MONITOR
How To Perform Switch Monitor

Description

In this mode, when BCM detects the input signal from a switch in IVMS as shown below, the detection is indi-
cated by the map lamp and step lamps with buzzer.

Switch Monitor Item

The status of the switch (except the ignition switch, interior ill lamp switch, and map lamp switch) as input to
each control unit can be monitored.

Cancel Of Switch Monitor

Turn ignition switch OFF.

Drive the vehicle at more than 7 km/h (4 MPH).

PIIA3356E

PIIA0177E

Control unit name

Item

BCM

All door switch

Electronic key  (lock / unlock switch and trunk switch)

Driver door control unit (LCU01)

Door lock and unlock switch (LOCK / UNLOCK)

Front door key cylinder switch

Driver door unlock sensor

Passenger door control unit

Passenger door unlock sensor

Rear LH door control unit

Rear LH door unlock sensor

Rear RH door control unit

Rear RH door unlock sensor

POWER DOOR LOCK SYSTEM

BL-43

C

D

E

F

G

H

J

K

L

M

A

B

BL

POWER DOOR LOCK SYSTEM SELF-DIAGNOSIS
How To Perform Self-Diagnosis

Description

In this mode, a malfunction code is indicated by the number of flashes from the map lamps and step lamps as
shown below:

After indicator lamp turns ON for 2 seconds and then turns OFF, it flashes to indicate a malfunction code. For
example, the indicator lamp goes on and off for 0.5 seconds three times. This indicates malfunction code of
rear RH door lock actuator / unlock sensor.

Malfunction Code Table

Cancel Of Self-Diagnosis

If one of the following condition is satisfied, the communication diagnosis is cancelled.

Turn ignition switch OFF.

Ten minutes has passed since the diagnosis result indication start without any diagnosis cancel operation.

PIIA3357E

PIIA0178E

Code No.

Detected items

Diagnostic procedure

1

Driver door lock actuator / unlock sensor

Refer to 

BL-51, "Check Door Unlock Sensor"

 .

2

Passenger door lock actuator / unlock sensor

3

Rear RH door lock actuator / unlock sensor

4

Rear LH door lock actuator / unlock sensor

9

No malfunction in the above items

BL-44

POWER DOOR LOCK SYSTEM

Symptom Chart

NIS000U3

Always check the “Work Flow” before troubleshooting. Refer to 

BL-32, "Work Flow"

 .

Before carrying out the inspection on the following table, carry out the preliminary check.
Refer to 

BL-33, "Preliminary Check"

 .

Check Communication Line

NIS000U4

1. 

CHECK COMMUNICATION CIRCUIT 

1.

Turn ignition switch OFF.

2.

Disconnect connectors for driver door control unit (LCU01) and malfunctioning door control unit.

3.

Check continuity between driver door control unit (LCU01) connector and malfunctioning door control unit
connector.

OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace harness.

Symptom

Diagnosis procedure

Reference 

page

Power door lock does not operate with door lock and 
unlock switch on power window main switch.

1. Check door lock and unlock switch.

BL-45

2. Check communication line.

BL-44

3. Replace driver door control unit (LCU01).

Specific door lock actuator does not operate.

1. Check door lock actuator (Passenger, Rear LH, RH).

BL-46

2. Check communication line.

BL-44

3. Replace door control unit.

Power door lock does not operate with front key cylinder 
switch operation.

1. Check front door key cylinder switch.

BL-47

2. Check communication line.

BL-44

3. Replace driver door control unit (LCU01).

Key reminder door system does not operate properly.

1. Check front door switch.

BL-49

2. Check key switch.

BL-48

3. Replace BCM.

Terminal

Continuity

Driver door control unit (LCU01)

Passenger door control unit

Connector

Terminal

(Wire color)

Connector

Terminal

(Wire color)

D8

5 (G/OR)

D38

11 (G/OR)

Yes

Terminal

Continuity

Driver door control unit (LCU01)

Rear door control unit

Connector

Terminal

(Wire color)

Connector

Terminal

(Wire color)

D8

5 (G/OR)

D58 (LH)

D78 (RH)

11 (G/OR)

Yes

PIIB0177E

 

 

 

 

 

 

 

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