Infiniti F50. Manual - part 198

POWER DOOR LOCK SYSTEM

BL-39

C

D

E

F

G

H

J

K

L

M

A

B

BL

Malfunction Code Table

NOTE:

●

For a specific local control unit (LCU), either “PAST COMM DATA” or “PAST NO RESPONSE” may be displayed instead of the
above results. This is caused by the data record, so erase the records.
(The display only shows the error records, they are not malfunctions caused during the diagnosis. One possible cause is that an
reproducible symptom occurred.)

●

Follow the steps below to erase the memory 
Carry out either disconnect BCM battery power supply or erase memory with CONSULT-II.

●

With the battery connected, if the local control unit (LCU) connector is disconnected and left for approximately 1 minute, the BCM
stores “NO RESPONSE” record.

Cancel of Communication Diagnosis

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

●

Turn ignition switch OFF.

●

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

●

Ten minutes have passed since the diagnosis result indication start without any diagnosis cancel opera-
tion.

Malfunctioning 

item

Display unit

CONSULT-II IVMS communication diag-

nosis content

Self-diagnosis  

trouble code 

No.

Malfunctioning system and 

reference

COMM DATA

One LCU is dis-
played.

POWER WINDOW C/U-DR
“COMM DATA”

24

Replace the displayed 
LCU.

DOOR MIRROR C/U-RH
“COMM DATA”

27

DOOR MIRROR C/U-LH
“COMM DATA”

37

POWER SEAT C/U-DR
“COMM DATA”

47

Multiple LCUs 
are displayed.

BCM
“COMM FAIL1”, “COMM FAIL2”

Displays in 
order of 24 

→

27

→

37

→

47

→

and cycles 

from 24.

Communication system A: 
Refer to 

BL-40, "COMMU-

NICATION SYSTEM A"

 .

NO
RESPONSE

One LCU is dis-
played.

POWER WINDOW C/U-DR
“NO RESPONSE”

25

Communication system B: 
Refer to 

BL-40, "COMMU-

NICATION SYSTEM B"

 .

DOOR MIRROR C/U-RH
“NO RESPONSE”

28

DOOR MIRROR C/U-LH
“NO RESPONSE”

38

POWER SEAT C/U-DR
“NO RESPONSE”

48

Multiple LCUs 
are displayed.

BCM/HARNESS

Displays in 
order of 
25

→

28

→

38

→

4

8 and cycles 
from 25.

Communication system C: 
Refer to 

BL-40, "COMMU-

NICATION SYSTEM C"

 .

SLEEP malfunc-
tion

One LCU is dis-
played.

POWER WINDOW C/U-DR "SLEEP"

No self-diagno-
sis function

Replace the displayed 
LCU.

DOOR MIRROR C/U-RH 
“SLEEP”

DOOR MIRROR C/U-LH 
“SLEEP”

POWER SEAT C/U-DR 
“SLEEP”

Multiple LCUs 
are displayed.

All the above control units are displayed.

No self-diagno-
sis function

Communication system A: 
Refer to 

BL-40, "COMMU-

NICATION SYSTEM A"

 .

BL-40

POWER DOOR LOCK SYSTEM

COMMUNICATION SYSTEM A

1. 

BCM INSPECTION

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

BL-35, "IVMS COMMUNICATION INSPECTION"

  (with CONSULT-II), 

BL-38, "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-35, "IVMS COMMUNICATION INSPECTION"

  (with CONSULT-II), 

BL-38, "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-35, "IVMS COMMUNICATION INSPECTION"

  (with CONSULT-II), 

BL-38, "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-35, "IVMS

COMMUNICATION INSPECTION"

  (with CONSULT-II), 

BL-38, "COMMUNICATION DIAGNOSIS"

  (without

CONSULT-II).

OK or NG

OK

>> Replace BCM.

NG

>> Repair the communication harness between LCU and BCM.

POWER DOOR LOCK SYSTEM

BL-41

C

D

E

F

G

H

J

K

L

M

A

B

BL

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

BL-42

POWER DOOR LOCK SYSTEM

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-50, "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