Infiniti Q45 (FY33). Manual — part 339
SEL532W
DIAGNOSTIC PROCEDURE 2
[Key switch (Insert) check]
SEL916V
SEL907U
CHECK KEY SWITCH INPUT SIGNAL.
CONSULT-II
See “IGN KEY SW” in DATA MONITOR
mode.
When key is inserted in ignition key cylin-
der:
IGN KEY SW
ON
When key is removed from ignition key
cylinder:
IGN KEY SW
OFF
-------------------------------------------------------------------------------------------------------------------------------------- OR --------------------------------------------------------------------------------------------------------------------------------------
TESTER
Check voltage between BCM terminal
q
69
and ground.
Refer to wiring diagram in EL-335.
NG
E
OK
Ignition key switch is OK.
CHECK KEY SWITCH.
1. Disconnect key switch connector.
2. Check continuity between key switch
(insert) terminals
q
3
and
q
4
when key
is inserted in ignition key cylinder and
key is removed from ignition key cylin-
der.
OK
E
NG
Replace key switch
(insert).
Check the following.
I
10A fuse [No.
28
, located in fuse block
(J/B)]
I
Harness for open or short between key
switch and fuse
I
Harness for open or short between BCM
and key switch
Condition of key
switch
Voltage V
Key is inserted.
Approx. 12
Key is removed.
0
Condition
Continuity
Key is inserted.
Yes
Key is removed.
No
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-347
SEL561W
DIAGNOSTIC PROCEDURE 3
(Lock & unlock switch check)
CHECK DOOR LOCK & UNLOCK
SWITCH INPUT SIGNAL.
CONSULT-II
See “DOOR LK SW-LK or UN” in DATA
MONITOR mode.
When lock & unlock switch is turned to
lock:
DOOR LK SW-LK
ON
When lock & unlock switch is turned to
unlock:
DOOR LK SW-UN
ON
-------------------------------------------------------------------------------------------------------------------------------------- OR --------------------------------------------------------------------------------------------------------------------------------------
ON BOARD
Check door lock & unlock switch operation
in Switch monitor (Mode II) mode. (Refer
to On board Diagnosis, EL-299.)
NG
E
OK
Lock & unlock switch is
OK.
Replace driver door control unit (LCU01).
POWER DOOR LOCK — IVMS
Trouble Diagnoses (Cont’d)
H
EL-348
SEL537W
DIAGNOSTIC PROCEDURE 4-(1)
(Door key cylinder lock switch check)
SEL871W
SEL909U
CHECK DOOR KEY CYLINDER SWITCH
INPUT SIGNAL (LOCK SIGNAL).
CONSULT-II
See “KEY CYL LK” in DATA MONITOR
mode.
“KEY CYL LK” should be “ON” when
key inserted in door key cylinder was
turned to lock.
-------------------------------------------------------------------------------------------------------------------------------------- OR --------------------------------------------------------------------------------------------------------------------------------------
TESTER
Check voltage between LCU01/02 termi-
nal
q
1
and ground.
Refer to wiring diagram in EL-336 or 337.
NG
E
OK
Door key cylinder switch
(lock) is OK.
CHECK DOOR KEY CYLINDER
SWITCH.
1. Disconnect door key cylinder switch
connector.
2. Check continuity between door key cyl-
inder switch terminals.
OK
E
NG
Replace door key cylinder
switch.
Check the following.
I
Door key cylinder switch ground circuit
I
Harness for open or short between LCU
and door key cylinder switch
Key position
Voltage V
Neutral/Unlock
Approx. 5
Lock
0
Terminals
Key position
Continuity
LH:
q
3
-
q
2
RH:
q
1
-
q
2
Neutral/
Unlock
No
Lock
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-349
SEL538W
DIAGNOSTIC PROCEDURE 4-(2)
(Door key cylinder unlock switch check)
SEL952V
SEL913U
CHECK DOOR KEY CYLINDER SWITCH
INPUT SIGNAL (UNLOCK SIGNAL).
CONSULT-II
See “KEY CYL UN” in DATA MONITOR
mode.
“KEY CYL UN” should be “ON” when
key inserted in door key cylinder was
turned to unlock.
-------------------------------------------------------------------------------------------------------------------------------------- OR --------------------------------------------------------------------------------------------------------------------------------------
TESTER
Check voltage between BCM terminals
q
27
or
q
31
and ground.
Refer to wiring diagram in EL-335.
NG
E
OK
Door key cylinder switch
(unlock) is OK.
CHECK DOOR KEY CYLINDER
SWITCH.
1. Disconnect door key cylinder switch
connector.
2. Check continuity between door key cyl-
inder switch terminals.
OK
E
NG
Replace door key cylinder
switch.
Check the following.
I
Door key cylinder switch ground circuit
I
Harness for open or short between BCM
and door key cylinder switch
Terminals
Key
position
Voltage
V
!
@
LH
q
31
Ground
Neutral/
Lock
Approx.
12
Unlock
0
RH
q
27
Ground
Neutral/
Lock
Approx.
12
Unlock
0
Terminals
Key position
Continuity
LH:
q
1
-
q
2
RH:
q
3
-
q
2
Neutral/Lock
No
Unlock
Yes
POWER DOOR LOCK — IVMS
Trouble Diagnoses (Cont’d)
H
H
EL-350
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