Infiniti M45 (Y34). Manual — part 203
POWER DOOR LOCK SYSTEM
BL-37
C
D
E
F
G
H
J
K
L
M
A
B
BL
On Board Diagnosis
AIS001DG
ON BOARD DIAGNOSTIC RESULTS INDICATOR LAMP
Front map lamps and step lamps (all seats) act as the indicators for the on board diagnosis.
DIAGNOSIS ITEM
COMMUNICATION DIAGNOSIS
Check the communication between BCM and local control unit (LCU).
How to Perform Communication 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 then off for 2 seconds, it flashes [cycling ON (0.5 sec.)/OFF (0.5
sec.)] to indicate a malfunction code of the first digit. Then, 1.5 second after indicator lamp turns off, it again
flashes [cycling ON (0.5 sec.)/OFF (0.5 sec.)] to indicate a malfunction code of the second digit.
For example, the indicator lamp goes on and off for 0.5 seconds twice and after 1.5 seconds, it goes on and off
for 0.5 seconds four times. This indicates malfunction code of driver door control unit communication.
Diagnosis item
Content
IVMS communication diagnosis
Diagnosis any malfunction or inability of communication between BCM and LCU (DATA
LINE A-3).
Switch monitor
Monitoring conditions of switches connected to BCM, LCU and Door control unit.
Power door lock system self-diagnosis
Diagnose malfunctions in the each door lock actuator system.
PIIA2871E
SIIA0410E
BL-38
POWER DOOR LOCK SYSTEM
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).
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
“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
NO
RESPONSE
One LCU is dis-
played.
POWER WINDOW C/U-DR
“NO RESPONSE”
25
Communication system B:
Refer to
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
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
POWER DOOR LOCK SYSTEM
BL-39
C
D
E
F
G
H
J
K
L
M
A
B
BL
●
Ten minutes have passed since the diagnosis result indication start without any diagnosis cancel opera-
tion.
COMMUNICATION SYSTEM A
1.
BCM INSPECTION
Replace the malfunctioning BCM with a known-good one, and perform the communication diagnosis.
Refer to
BL-34, "IVMS COMMUNICATION INSPECTION"
(with CONSULT-II),
(without CONSULT-II).
OK or NG
OK
>> Replace BCM.
NG
>> GO TO 2.
2.
LCU INSPECTION
1.
Replace with the previously installed BCM.
2.
Replace the LCU with a known-good one, and carry out the communication diagnosis.
Refer to
BL-34, "IVMS COMMUNICATION INSPECTION"
(with CONSULT-II),
(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 terminals and connectors.
2.
LCU INSPECTION
Replace the LCU with a known-good one, and carry out the communication diagnosis.
Refer to
BL-34, "IVMS COMMUNICATION INSPECTION"
(with CONSULT-II),
(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-34, "IVMS COMMUNICATION INSPECTION"
(with CONSULT-II),
(without CONSULT-II).
OK or NG
OK
>> Replace BCM.
NG
>> Repair the communication harness between LCU and BCM.
BL-40
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 lamp ill switch, and map lamp switch) as input to
each control unit can be monitored.
Cancel of Switch Monitor
If one of the following conditions is satisfied, the switch monitor is cancelled.
●
Turn ignition switch OFF.
●
Drive the vehicle at more than 7 km/h (4 MPH).
PIIA2869E
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
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