Infiniti F50. Manual - part 764

 

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Infiniti F50. Manual - part 764

 

 

AUTOMATIC DRIVE POSITIONER

SE-47

C

D

E

F

G

H

J

K

L

M

A

B

SE

COMMUNICATION DIAGNOSIS

Check the communication between BCM and each local control unit (LCU).

Operation Procedure

Diagnosis Result Display

The indicator lamps (the map  lamp and step lamp) turn ON (illuminate) for 2 seconds and OFF (go off) for
2 seconds to indicate that the diagnosis has started, then indicate the diagnosis trouble code.

To indicate the diagnosis trouble code, the indicator lamps illuminate or flash.

At first, the lamps indicate the second place by ON/OFF with 0.5 second-interval, then OFF for 1.5 sec-
onds. Next, they indicate the first place by ON/OFF with 0.5 second interval.

If there are multiple malfunctioning parts, the lamps indicate them in sequence from the smallest diagno-
sis trouble code.

The diagnosis results repeat until the diagnosis is cancelled.

If a malfunction is indicated, carry out the communication diagnosis again to check that the same diagno-
sis trouble code is indicated.

Diagnosis Trouble Code Indication Example

PIIA2871E

SIIA0410E

SE-48

AUTOMATIC DRIVE POSITIONER

Trouble Diagnosis Chart

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 incident records, they are not malfunctions caused during the diagnosis. One possible cause is that an
irreproducible incident 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.

When the ignition switch is turned OFF.

The vehicle speed becomes 7 km/h (4 MPH) or higher.

Ten minutes have passed since the diagnostic result indication start without no diagnosis cancel opera-
tion.

COMMUNICATION SYSTEM A

1. 

CHECK BCM

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

SE-47, "COM-

MUNICATION DIAGNOSIS"

 .

OK or NG

OK

>> Replace BCM

NG

>> GO TO 2.

Malfunctioning 

item

Display unit

CONSULT–II IVMS communication diagnosis 

content

Self-diagnosis 

trouble code No.

Malfunctioning system 

and reference

COMM DATA

One LCU is dis-
played.

POWER WINDOW  C/U–DR "COMMDATA"

24

Replace the displayed 
LCU.

DOOR MIRROR  C/U–RH "COMMDATA"

27

DOOR MIRROR  C/U–LH "COMMDATA"

37

POWER SEAT  C/U–DR "COMMDATA"

47

Multiple LCUs 
are displayed

BCM
"COMMFAIL1","COMMFAIL2"

Displays in 
order of 24 

27

37

47

and cycles from 
24.

Communication system A: 
Refer to 

SE-48

 .

NO
RESPONSE

One LCU is dis-
played.

POWER WINDOW C/U–DR "NORESPONSE"

25

Communication system B: 
Refer to 

SE-49

 .

DOOR MIRROR C/U–RH "NORESPONSE"

28

DOOR MIRROR C/U–LH "NORESPONSE"

38

POWER SEAT C/U–DR "NORESPONSE"

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 

SE-49

 .

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 

SE-48

 .

AUTOMATIC DRIVE POSITIONER

SE-49

C

D

E

F

G

H

J

K

L

M

A

B

SE

2. 

CHECK LCU

1.

Replace with the previously installed BCM.

2.

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

SE-47,

"COMMUNICATION DIAGNOSIS"

 .

OK or NG

OK

>> Replace LCU

NG

>> Repair the harness between the LCU and BCM.

COMMUNICATION SYSTEM B

1. 

CHECK HARNESS CONNECTOR

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

OK or NG

OK

>> GO TO 2.

NG

>> Repair the terminals and connectors.

2. 

CHECK LCU

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

SE-47, "COMMUNICATION DIAGNOSIS"

 .

OK or NG

OK

>> Replace LCU

NG

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

COMMUNICATION SYSTEM C

1. 

CHECK HARNESS CONNECTOR

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

OK or NG

OK

>> GO TO 2.

NG

>> Repair the terminals and connectors.

2. 

CHECK BCM

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

SE-47, "COMMUNICATION DIAGNOSIS"

 .

OK or NG

OK

>> Replace BCM

NG

>> Repair the harness between the LCU and BCM control.

SE-50

AUTOMATIC DRIVE POSITIONER

SWITCH MONITOR

Perform the diagnosis for the switch system input to each control unit.

Operation Procedure

Diagnosis Result Display

Detects the status change (switch ON/OFF operation) of the switch to be checked, and turns on/off the
indicator lamps (the map lamp and step lamp). Also sounds the buzzer (the key remainder and light
remainder) for 0.5 seconds.

If a malfunction is detected, no indicator lamp and buzzer react.

Diagnosis Item

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

PIIA2869E

PIIA0185E

Control unit 

Item

BCM

Detention switch

Steering wheel position switch (telescopic switch and tilt switch)

Seat memory switch (memory switch 1, memory switch 2, and setting switch)

Driver door switch

Door mirror remote control switch

Driver seat control unit

Slide switch (FR/RR)

Reclining switch (FR/RR)

Front end lifting switch (UP/DOWN)

Rear end lifting switch (UP/DOWN)

 

 

 

 

 

 

 

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