Infiniti Q45 (FY33). Manual — part 340
SEL525W
SEL025V
DIAGNOSTIC PROCEDURE 5
(Door unlock sensor check)
CHECK DOOR UNLOCK SENSOR
INPUT SIGNAL.
CONSULT-II
See “LOCK SIG” in DATA MONITOR
mode.
When door is locked:
LOCK SIG
LOCK
When door is unlocked:
LOCK SIG
UNLK
-------------------------------------------------------------------------------------------------------------------------------------- OR --------------------------------------------------------------------------------------------------------------------------------------
ON BOARD
Check door lock knob operation in Switch
monitor (Mode II) mode.
(Refer to On board Diagnosis, EL-299.)
Refer to wiring diagram in EL-336, or
338.
NG
E
OK
Door unlock sensor is OK.
CHECK DOOR UNLOCK SENSOR.
1. Disconnect door lock actuator connec-
tor.
2. Check continuity between door lock
actuator (door unlock sensor) terminals
q
2
and
q
4
.
OK
E
NG
Replace door lock actuator.
Check the following.
I
Harness for open or short between LCU
and door unlock sensor
I
Ground circuit for door unlock sensor
Condition
Continuity
Locked
No
Unlocked
Yes
GI
MA
EM
LC
EC
FE
AT
PD
FA
RA
BR
ST
RS
BT
HA
IDX
POWER DOOR LOCK — IVMS
Trouble Diagnoses (Cont’d)
H
H
EL-351
SEL526W
DIAGNOSTIC PROCEDURE 6
(Door lock actuator check)
SEL572UB
SEL024V
CHECK DOOR LOCK MOTOR OPERA-
TION.
CONSULT-II
See “DR LOCK MTR” in ACTIVE TEST
mode.
Perform operation shown on display.
Door lock motor should operate.
-------------------------------------------------------------------------------------------------------------------------------------- OR --------------------------------------------------------------------------------------------------------------------------------------
ON BOARD
Perform On board Diagnosis Mode III.
(Refer to EL-342.)
Door lock motor should operate.
NG
E
OK
Door lock actuator is OK.
Check voltage between LCU connector
terminals
q
17
or
q
12
and body ground.
Refer to wiring diagram in EL-336, or
338.
OK
E
NG
Replace LCU for malfunc-
tioning portion.
CHECK DOOR LOCK ACTUATOR.
1. Disconnect door lock actuator.
2. Apply 12V DC direct current to door
lock actuator and check operation.
OK
E
NG
Replace door lock actuator.
Check harness for open or short between
door lock actuator and LCU.
Door lock
operation
Terminals
Voltage
!
@
Lock
q
12
Ground
Battery
voltage
Unlock
q
17
Ground
Door lock
operation
Terminals
!
@
Lock
q
3
q
1
Unlock
q
1
q
3
POWER DOOR LOCK — IVMS
Trouble Diagnoses (Cont’d)
H
H
H
EL-352
Component Parts and Harness Connector
Location
SEL944WA
GI
MA
EM
LC
EC
FE
AT
PD
FA
RA
BR
ST
RS
BT
HA
IDX
MULTI-REMOTE CONTROL SYSTEM — IVMS
EL-353
System Description
POWER SUPPLY AND GROUND
BCM is connected to LCU01, LCU02, LCU03 and LCU04 as DATA LINE A-1 or A-2.
Power is supplied at all times
I
through 10A fuse [No.
28
, located in the fuse block (J/B)]
I
to key switch terminal
q
3
.
When the key switch is in ON position (key is inserted in ignition key cylinder), power is supplied
I
through key switch terminal
q
4
I
to BCM terminal
q
69
.
When any of the four door switches is in OPEN position, ground is supplied
I
to BCM terminal
q
32
(
q
37
,
q
33
,
q
28
)
I
through door switches body grounds.
When a door is unlocked, each door LCU terminal
q
5
receives a ground signal from terminal
q
2
of each door
unlock sensor.
Remote controller signal input
I
through window antenna
I
to BCM terminal
q
89
.
The multi-remote control system controls operation of the
I
power door lock
I
trunk lid opener
I
panic alarm
I
hazard and horn reminder
OPERATING PROCEDURE
BCM can receive signals from remote controller when key switch is in OFF position (key is not in cylinder). It
then sends the signals to LCUs as DATA LINE A-1 or A-2.
Power door lock operation
When BCM receives a LOCK signal from remote controller, BCM will then send a LOCK signal
I
from its terminals
q
70
and
q
61
(DATA LINES A-1 and A-2)
I
to each door control unit (LCU) terminal
q
3
.
When an UNLOCK signal is sent from remote controller once, driver’s door will be unlocked.
Then, if an UNLOCK signal is sent from remote controller again within 3 seconds, all other doors will be
unlocked. For detailed description, refer to “POWER DOOR LOCK — IVMS” (EL-333).
Hazard and horn reminder
Power is supplied at all times
I
through 10A fuse [No.
13
, located in the fuse block (J/B)]
I
to multi-remote control relay terminals
q
1
,
q
3
and
q
6
and
I
through 15A fuse (No.
64
, located in the fusible link and fuse box)
I
to horn relay terminal
q
1
.
When BCM receives a LOCK or UNLOCK signal from remote controller, ground is supplied
I
to multi-remote control relay terminal
q
2
I
through BCM terminal
q
6
and
I
to horn relay terminal
q
2
I
through BCM terminal
q
41
.
Multi-remote control relay and horn relay are now energized, and hazard warning lamps flash and horn sounds
as a reminder.)
Hazard and horn reminder has a horn chirp mode and a non-horn chirp mode.
Operating function of hazard and horn reminder
Horn chirp mode
Non-horn chirp mode
Hazard warning lamps
Horn
Hazard warning lamps
Horn
LOCK
Twice
Once
Twice
—
UNLOCK
Once
—
—
—
MULTI-REMOTE CONTROL SYSTEM — IVMS
EL-354
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