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LT-182
INTERIOR ROOM LAMP
Revision: 2004 November 2004 FX35/FX45
5. CHECK IGNITION KEY HOLE ILLUMINATION CIRCUIT
1. Disconnect BCM connector and key hole illumination connector.
2. Check continuity between BCM harness connector M3 terminal
1 (PU) and key hole illumination harness connector M24 termi-
nal 2 (PU).
OK or NG
OK >> Replace BCM if turn signal lamps does not work after
setting the connector again. Refer to BCS-15, "
Removal
and Installation of BCM" .
NG >> Repair harness or connector.
6. CHECK IGNITION KEY HOLE ILLUMINATION CIRCUIT
1. Disconnect BCM connector and key hole illumination connector.
2. Check continuity between BCM harness connector M4 terminal
41 (R/B) and key hole illumination harness connector M24 termi-
nal 1 (R/B).
OK or NG
OK >> Replace BCM if turn signal lamps does not work after
setting the connector again. Refer to BCS-15, "
Removal
and Installation of BCM" .
NG >> Repair harness or connector.
All Step Lamps Do Not OperateAKS007FI
1. CHECK EACH DOOR SWITCH
Select “BCM” on CONSULT-II. With “INT LAMP” data monitor to
make sure switches listed below turn ON-OFF linked with switch
operation.
OK or NG
OK >> GO TO 2.
NG >> Inspect malfunctioning switch system.
2. CHECK STEP LAMP INPUT
1. Turn ignition switch OFF.
2. Check voltage between front door driver side step lamp harness
connector D9 terminal 1 (R) and ground.
OK or NG
OK >> GO TO 3.
NG >> GO TO 4.1 (PU) – 2 (PU) : Continuity should exist.
PKIA5262E
41 (R/B) – 1 (R/B) : Continuity should exist.
PKIA5263E
Switch name CONSULT screen
Driver side door switch DOOR SW - DR
Passenger side door switch DOOR SW - AS
Rear RH side door switch DOOR SW - RR
Rear LH side door switch DOOR SW - RL
SKIA5930E
1 (R) – Ground : Battery voltage should exist.
PKIA5264E
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INTERIOR ROOM LAMP
LT-183
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Revision: 2004 November 2004 FX35/FX45
3. CHECK STEP LAMP CIRCUIT
1. Disconnect BCM connector and front door driver side step lamp
connector.
2. Check continuity between BCM harness connector M4 terminal
47 (Y/R) and front door driver side step lamp harness connector
D9 terminal 2 (SB).
OK or NG
OK >> Replace BCM if turn signal lamps does not work after
setting the connector again. Refer to BCS-15, "
Removal
and Installation of BCM" .
NG >> Repair harness or connector.
4. CHECK STEP LAMP CIRCUIT
1. Disconnect BCM connector and step lamp connector.
2. Check continuity between BCM harness connector M4 terminal
41 (R/B) and front door driver side step lamp harness connector
D9 terminal 1 (R).
OK or NG
OK >> Replace BCM if turn signal lamps does not work after
setting the connector again. Refer to BCS-15, "
Removal
and Installation of BCM" .
NG >> Repair harness or connector.
All Interior Room Lamps Do Not OperateAKS007FJ
1. CHECK POWER SUPPLY CIRCUIT
1. All interior room lamps switch are OFF.
2. Turn ignition switch ON.
3. Check voltage between BCM harness connector M4 terminal 41
(R/B) and ground.
OK or NG
OK >> Repair harness or connector. In a case of making a
short circuit, be sure to disconnect battery negative
cable after repairing harness, and then reconnect.
NG >> Replace BCM. Refer to BCS-15, "
Removal and Installa-
tion of BCM" .
Bulb ReplacementAKS007FK
ROOM LAMP
1. Remove room lamp. Refer to LT- 1 8 4 , "Removal and Installation"
.
2. Insert a suitable tool and remove lens.
3. Remove the bulb.
4. Install in the reverse order of removal.47 (Y/R) – 2 (SB) : Continuity should exist.
PKIA5265E
41 (R/B) – 1 (R) : Continuity should exist.
PKIA5266E
41 (R/B) – Ground : Battery voltage should exist.
PKIA5267E
Room lamp :12V - 8W
PKIA2848E
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LT-184
INTERIOR ROOM LAMP
Revision: 2004 November 2004 FX35/FX45
MAP LAMP
Refer to LT- 1 5 0 , "Bulb Replacement" in “MAP LAMP”.
PERSONAL LAMP
Refer to LT- 1 5 1 , "Bulb Replacement" in “PERSONAL LAMP”.
Removal and InstallationAKS007FL
ROOM LAMP
1. Use a suitable tool to press metal clip and remove room lamp.
2. Disconnect room lamp connector.
MAP LAMP
Refer to LT- 1 5 0 , "Removal and Installation" in “MAP LAMP”.
PERSONAL LAMP
Refer to LT- 1 5 1 , "Removal and Installation" in “PERSONAL LAMP”.
PKIA2849E
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ILLUMINATION
LT-185
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ILLUMINATIONPFP:27545
System DescriptionAKS007EI
Control of the illumination lamps operation is dependent upon the position of the lighting switch (combination
switch). When the lighting switch is placed in the 1ST or 2ND position (or if the auto light system is activated)
the BCM (body control module) receives input signal requesting the illumination lamps to illuminate. This input
signal is communicated to the IPDM E/R (intelligent power distribution module engine room) across the CAN
communication lines. The CPU (central processing unit) of IPDM E/R (intelligent power distribution module
engine room) controls the tail lamp relay coil. This relay, when energized, directs power to the illumination
lamps, which then illuminate.
Power is supplied at all times
to tail lamp relay [located in IPDM E/R (intelligent power distribution module engine room)]
through 10A fuse [No. 71, located in IPDM E/R (intelligent power distribution module engine room)].
Power is also supplied at all times
to BCM (body control module) terminal 55
through 50A fusible link (letter M, located in fuse and fusible link block)
to BCM (body control module) terminal 42
through 15A fuse [No. 22, located in fuse block (J/B)]
to CPU (central processing unit) [located in IPDM E/R (intelligent power distribution module engine room)]
through 15A fuse [No. 78, located in IPDM E/R (intelligent power distribution module engine room)]
to unified meter and A/C amp. terminal 21 and
to combination meter terminal 8
through 10A fuse [No. 19, located in fuse block (J/B)].
With the ignition switch in the ON or START position, power is supplied
to BCM (body control module) terminal 38
through 15A fuse [No. 1, located in fuse block (J/B)]
to unified meter and A/C amp. terminal 22
through 10A fuse [No. 12, located in fuse block (J/B)]
to ignition relay in the IPDM E/R (intelligent power distribution module engine room)
from ignition switch
to combination meter terminal 7
through 10A fuse [No. 14, located in fuse block (J/B)].
With the ignition switch in the ACC or ON position, power is supplied
to BCM (body control module) terminal 11
through 10A fuse [No. 6, located in fuse block (J/B)].
Ground is supplied
to BCM (body control module) terminals 49 and 52
to unified meter and A/C amp. terminals 29 and 30, and
to combination meter terminals 5, 6, and 15
through grounds M35, M45, and M85
to IPDM E/R (intelligent power distribution module engine room) terminals 38 and 60
through grounds E21, E50, and E51.
ILLUMINATION OPERATION BY LIGHTING SWITCH
With the lighting switch in the 1ST or 2ND position (or if the auto light system is activated), the BCM receives
input signal requesting the illumination lamps to illuminate. This input signal is communicated to the IPDM E/R
across the CAN communication lines. The central processing unit of the IPDM E/R controls the tail lamp relay
coil, which, when energized, directs power
through IPDM E/R terminal 22
to glove box lamp terminal 1
to A/T device (illumination) terminal 11
to snow mode switch (illumination) terminal 4
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LT-186
ILLUMINATION
Revision: 2004 November 2004 FX35/FX45
to VDC off switch (illumination) terminal 3
to clock (illumination) terminal 3
to hazard switch (illumination) terminal 3
to heated seat switch (driver side) (illumination) terminal 5
to heated seat switch (passenger side) (illumination) terminal 5
to A/C and AV switch (illumination) terminal 3
to NAVI control unit (illumination) terminal 25
to DVD player (illumination) terminal 12
to front cigarette lighter socket terminal 2
to rear power window switch LH (illumination) terminal 6 and
to rear power window switch RH (illumination) terminal 6.
Illumination control
through combination meter terminal 19
to A/T device (illumination) terminal 12
to snow mode switch (illumination) terminal 2
to VDC off switch (illumination) terminal 4
to clock (illumination) terminal 4
to hazard switch (illumination) terminal 4
to heated seat switch (driver side) (illumination) terminal 6
to heated seat switch (passenger side) (illumination) terminal 6
to A/C and AV switch (illumination) terminal 4
to NAVI control unit (illumination) terminal 30
to DVD player (illumination) terminal 10.
Ground is supplied at all times
to glove box lamp terminal 2 and
to front cigarette lighter socket terminal 3
through grounds M35, M45 and M85
to rear power window switch LH (illumination) terminal 7 and
to rear power window switch RH (illumination) terminal 7
through grounds B15 and B45.
With power and ground supplied, illumination lamps illuminate.
EXTERIOR LAMP BATTERY SAVER CONTROL
When the combination switch (lighting switch) is in the 1ST or 2ND position (or if auto light system is acti-
vated), and the ignition switch is turned from ON or ACC to OFF, the battery saver control function is activated.
Under this condition, the illumination lamps remain illuminated for 5 minutes, then the illumination lamps are
turned off.
When the lighting switch is turned from OFF to 1ST or 2ND position (or if auto light system is activated) after
illumination lamps are turned off by the battery saver control, and illumination lamps illuminate again.
Exterior lamp battery saver control mode can be changed by the function setting of CONSULT-II.
CAN Communication System DescriptionAKS007EJ
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
CAN Communication UnitAKS0080Y
Refer to LAN-6, "CAN Communication Unit" .
Page 3742 of 4449
ILLUMINATION
LT-187
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Revision: 2004 November 2004 FX35/FX45
SchematicAKS007EL
TKWM0670E
Page 3743 of 4449
LT-188
ILLUMINATION
Revision: 2004 November 2004 FX35/FX45
TKWM1254E
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ILLUMINATION
LT-189
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Revision: 2004 November 2004 FX35/FX45
Wiring Diagram — ILL —AKS007EM
TKWM0826E