Infiniti M45 (Y34). Manual — part 204
POWER DOOR LOCK SYSTEM
BL-41
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
PIIA2870E
PIIA0178E
Code No.
Detected items
Diagnostic procedure
1
Driver door lock actuator / unlock sensor
Refer to
BL-49, "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-42
POWER DOOR LOCK SYSTEM
Cancel of Self-Diagnosis
●
Turn ignition switch OFF.
●
Ten minutes has passed since the diagnosis result indication start without any diagnosis cancel operation.
Symptom Chart
AIS001QC
●
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
AIS001DJ
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 terminal 5 and malfunctioning door
control unit connector terminal 15.
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.
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 (L/Y)
D38
15 (L/Y)
Yes
Terminal
Continuity
Driver door control unit (LCU01)
Rear door control unit
Connector
Terminal
(Wire color)
Connector
Terminal
(Wire color)
D8
5 (L/Y)
D58 (LH)
D78 (RH)
15 (L/Y)
Yes
PIIA2814E
POWER DOOR LOCK SYSTEM
BL-43
C
D
E
F
G
H
J
K
L
M
A
B
BL
2.
CHECK COMMUNICATION SIGNAL
1.
Connect driver door control unit (LCU01) and malfunctioning door control unit connector.
2.
Check voltage between malfunctioning door control unit connector terminal 15 and ground.
OK or NG
OK
>> Communication signal is OK.
NG
>>
●
All door control unit (passenger, rear LH and RH) are NG.
→
Replace Driver door control unit.
●
Any of door control unit (passenger, rear LH or RH door control unit) are NG.
→
Replace mal-
functioning door control unit.
Check Door Lock & Unlock Switch
AIS001DI
1.
CHECK DOOR LOCK AND UNLOCK SWITCH
With CONSULT-II
See “DOOR LK SW-LK and UN” in DATA MONITOR mode with CONSULT-II.
●
When door lock and unlock switch is turned to lock:
●
When lock and unlock switch is turned to unlock:
Without CONSULT-II
Check door lock and unlock switch operation in “SWITCH MONITOR” mode. Refer to
.
OK or NG
OK
>> Replace driver door control unit (LCU01).
NG
>> Replace door lock and unlock switch.
Passenger
door con-
trol unit
Terminal
Voltage
(+)
(–)
Connector
Terminal
(Wire
color)
Ground
D38
15 (L/Y)
Rear LH,
RH door
control unit
Terminal
(+)
(–)
Connector
Terminal
(Wire
color)
Ground
D58 (LH)
D78 (RH)
15 (L/Y)
PIIA2815E
SIIA0591J
DOOK LK SW-LK
: OFF
→
ON
DOOK LK SW-UN
: OFF
→
ON
SEL561W
BL-44
POWER DOOR LOCK SYSTEM
Check Door Lock Actuator (Driver Side)
AIS001DL
1.
CHECK DOOR LOCK ACTUATOR HARNESS
1.
Turn the ignition switch OFF.
2.
Disconnect driver door control unit (LCU01) and front door lock actuator connector (driver side).
3.
Check continuity between driver door control unit (LCU01) connector D8 terminals 12 (BR), 17 (SB) and
front door lock actuator connector (driver side) D11 terminals 1 (SB), 3 (BR).
4.
Check continuity between driver door control unit (LCU01) con-
nector D8 terminal 12 (BR), 17 (SB) and ground.
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace harness.
2.
CHECK OUTPUT SIGNAL
1.
Connect driver door control unit (LCU01) connector.
2.
Check voltage between driver door control unit (LCU01) connector D8 terminals 12 (BR), 17 (SB) and
ground.
OK or NG
OK
>> Replace front door lock actuator driver side.
NG
>> Replace driver door control unit (LCU01).
Check Door Lock Actuator (Passenger Side, Rear LH, RH)
AIS001DM
1.
CHECK DOOR LOCK ACTUATOR HARNESS
1.
Turn the ignition switch OFF.
2.
Disconnect passenger door control unit and door lock actuator connector.
3.
Check continuity between passenger door control unit connector D38 terminals 8 (SB), 9(BR) and door
lock actuator connector D41 (Passenger), D61 (Rear LH) and D81 (Rear RH) terminals 1 (SB), 3 (BR).
4.
Check continuity between passenger door control unit connector
D38 terminal 8 (SB), 9 (BR) and ground.
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace harness.
12 (BR) – 3 (BR)
: Continuity should exist.
17 (SB) – 1 (SB)
: Continuity should exist.
12 (BR) – Ground
: Continuity should not exist.
17 (SB) – Ground
: Continuity should not exist.
PIIA2816E
Door lock operation
Terminal
(Wire color)
Voltage (V)
(Approx.)
(+)
(–)
Free
→
Lock
17 (SB)
Ground
0
→
Battery voltage
Free
→
Unlock
12 (BR)
0
→
Battery voltage
PIIA2817E
1 (SB) – 8 (SB)
: Continuity should exist.
3 (BR) – 9 (BR)
: Continuity should exist.
8 (SB) – Ground
: Continuity should not exist.
9 (BR) – Ground
: Continuity should not exist.
PIIA2818E
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