Page 4129 of 4555

INTERIOR ROOM LAMP
LT-133
C
D
E
F
G
H
I
J
L
MA
B
LT
When map lamp switch is ON, ground is supplied (with sunroof)
to map lamp terminal 2
through ground M27 and M70.
INTERIOR ROOM LAMP TIMER OPERATION
When interior room lamp and map lamp (with sunroof) switch is in the DOOR position, the time control unit
keeps the interior room lamp and map lamp (with sunroof) illuminated for about 30 seconds when
unlock signal is supplied from driver's door unlock sensor while all doors are closed and key is out of igni-
tion key cylinder
key is removed from ignition key cylinder while all doors are closed
driver's door is opened and then closed while key is out of the ignition key cylinder. (However, if the
driver's door is closed with the key inserted in the ignition key cylinder after the driver's door is opened
with the key removed, the timer is operated.)
The timer is canceled when
driver's door is locked,
driver's door is opened, or
ignition switch is turned ON.
ON-OFF CONTROL
When the driver’s door, passenger’s door, rear LH door or rear RH door is opened, the interior room lamp and
map lamp (with sunroof) turns on while the interior room lamp and map lamp (with sunroof) switch is in the
DOOR position.
Page 4130 of 4555
LT-134
INTERIOR ROOM LAMP
Wiring Diagram — ROOM/L—EKS003BR
LHD MODELS
TKWA1547E
Page 4131 of 4555
INTERIOR ROOM LAMP
LT-135
C
D
E
F
G
H
I
J
L
MA
B
LT
TKWA1548E
Page 4132 of 4555
LT-136
INTERIOR ROOM LAMP
RHD MODELS
TKWA1549E
Page 4133 of 4555
INTERIOR ROOM LAMP
LT-137
C
D
E
F
G
H
I
J
L
MA
B
LT
TKWA1550E
Page 4134 of 4555

LT-138
INTERIOR ROOM LAMP
Interior Room Lamp Timer Does Not OperateEKS00OM7
1. CHECK POWER SUPPLY SIGNAL
1. Turn ignition switch OFF.
2. Disconnect time control unit connector.
3. Check voltage between time control unit harness connector and
ground.
OK or NG
OK >> GO TO 2.
NG >> Check the following.
10A fuse [No. 28, located in fuse block (J/B)]
Harness for open or short between time control unit and 10A fuse (No. 28)
2. CHECK FRONT DOOR SWITCH (DRIVER SIDE) INPUT SIGNAL
1. Connect time control unit connector.
2. Check voltage between time control unit harness connector and
ground.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3. CHECK FRONT DOOR SWITCH (DRIVER SIDE)
1. Disconnect front door switch (driver side) connector.
2. Check continuity between front door switch (driver side) termi-
nals.
OK or NG
OK >> Check the following.
Front door switch (driver side) ground circuit condition
Harness for open or short between time control unit and front door switch (driver side)
NG >> Replace front door switch (driver side).
Te r m i n a l
Voltage (+)
(−)
Connector Terminal (Wire color)
M30 1 (L) Ground Battery voltage
PKIA5561E
Terminal
Condition Voltage (+)
(−)
Connector Terminal (Wire color)
M31 30 (SB) GroundOFF (closed) Approx. 5V
ON (open) Approx. 0V
PKIA5562E
Connector Terminal Condition Continuity
B16 2 3Pushed (closed) No
Released (open) Yes
PKIC0928E
Page 4135 of 4555

INTERIOR ROOM LAMP
LT-139
C
D
E
F
G
H
I
J
L
MA
B
LT
4. CHECK FRONT DOOR UNLOCK SENSOR INPUT SIGNAL (DRIVER SIDE)
Check voltage between time control unit harness connector and
ground.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
5. CHECK FRONT DOOR UNLOCK SENSOR (DRIVER SIDE)
1. Disconnect front door lock actuator (driver side) connector.
2. Check continuity between front door lock actuator (driver side)
terminals.
OK or NG
OK >> Check the following.
Front door lock actuator (driver side) ground circuit
Harness for open or short between time control unit
and front door lock actuator (driver side).
NG >> Replace front door lock actuator (driver side).
6. CHECK DOOR SWITCHES INPUT SIGNAL (EXCEPT DRIVER SIDE)
Check voltage between time control unit harness connector and
ground.
OK or NG
OK >> GO TO 8.
NG >> GO TO 7.
Terminal
Condition Voltage (+)
(−)
Connector Terminal (Wire color)
M31 28 (Y/G) GroundLocked Approx. 5V
Unlocked Approx. 0V
PKIA5564E
Connector Terminal Condition Continuity
D9 2 5Locked No
Unlocked Yes
PKIA5565E
Terminal
Condition
(Except driver
side door)Vo l ta g e (+)
(−)
Connector Terminal (Wire color)
M31 31 (R/W) GroundON (open) Approx. 0V
OFF (closed) Approx. 5V
PKIA5566E
Page 4136 of 4555
LT-140
INTERIOR ROOM LAMP
7. CHECK DOOR SWITCHES (EXCEPT DRIVER SIDE)
1. Disconnect each door switch connector (except driver side) and time control unit connector.
2. Check continuity between time control unit harness connector
and each door switch harness connector.
OK or NG
OK >> Check the following.
Door switch ground condition.
Replace door switch.
NG >> Harness for open or short between time control unit and each door switch (except driver side).
Terminal
Continuity Time control unit Door switch
ConnectorTerminal
(Wire color)ConnectorTerminal
(Wire color)
M31 31 (R/W)B121Rear door switch
RH
1 (R/W) Yes B118Front door switch
(passenger side)
B20Rear door switch
LH
D45 Back door switch
PKIC0965E
PKIC0966E
PKIC0967E