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),
(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),
(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),
(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-39, "COMMUNICATION DIAGNOSIS"
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
●
Before carrying out the inspection on the following table, carry out the preliminary check.
Refer to
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.
2. Check communication line.
3. Replace driver door control unit (LCU01).
–
Specific door lock actuator does not operate.
1. Check door lock actuator (Passenger, Rear LH, RH).
2. Check communication line.
3. Replace door control unit.
–
Power door lock does not operate with front key cylinder
switch operation.
1. Check front door key cylinder switch.
2. Check communication line.
3. Replace driver door control unit (LCU01).
–
Key reminder door system does not operate properly.
1. Check front door switch.
2. Check key switch.
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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