Instrument Cluster / Carrier: Description and Operation

ILLUMINATION

System Description
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 the IPDM E/R 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 ignition relay, located in the IPDM E/R, and
- to tail lamp relay, located in the IPDM E/R, and
- through 50 A fusible link (letter f , located in the fuse and fusible link box)
- to BCM terminal 70, and
- through 20 A fuse (No. 53, located in the IPDM E/R)
- to CPU of the IPDM E/R, and
- through 10 A fuse [No.19, located in fuse block (J/B)]
- to combination meter terminal 8

With the ignition switch in the ON or START position, power is supplied
- to ignition relay, located in the IPDM E/R, and
- through 10 A fuse (No. 59, located in the fuse and relay box)
- to BCM terminal 38, and
- through 10 A fuse [No. 14, located in the fuse block (J/B)]
- to combination meter terminal 24.

Ground is supplied
- to BCM terminal 67 and
- to combination meter terminal 17
- through grounds M57, M61 and M79, and
- to IPDM E/R terminals 38 and 59
- through grounds E9, E15 and E24.

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 CPU of the IPDM E/R controls the tail lamp relay coil, which, when energized, directs power
- through 10 A fuse (No. 36, located in the IPDM E/R)
- through IPDM E/R terminal 49
- to illumination control switch terminal 1
- to power liftgate switch terminal 3
- to front room/map lamp assembly (console box illumination) terminal 7
- to hazard switch terminal 3
- to rear sonar system OFF switch terminal 3
- to glove box lamp terminal 1
- to display control unit terminal 14
- to 4WD shift switch terminal 7 (with 4-wheel drive)
- to front air control terminal 23
- to rear power vent window switch terminal 5
- to DVD player terminal 12 (with DVD entertainment system)
- to NAVI control unit terminal 61
- to pedal adjusting switch terminal 5
- to electric brake (pre-wiring) terminal 4 (with trailer tow)
- to front and rear heated seat switch LH and RH terminal 5
- to A/T device terminal 11
- to VDC OFF switch terminal 3
- to tow mode switch terminal 3
- to headlamp aiming switch terminal 3
- to clock terminal 3, and
- through 10 A fuse (No. 37, located in the IPDM E/R)
- through IPDM E/R terminal 57
- to AV switch terminal 3
- to audio unit terminal 8
- to rear air control terminal 1 and
- to rear audio remote control unit terminal 6.

Illumination is controlled
- through illumination control switch terminal 2
- to power liftgate switch terminal 4
- to front room/map lamp assembly (console box illumination) terminal 8
- to AV switch terminal 4
- to hazard switch terminal 4
- to audio unit terminal 7
- to rear sonar system OFF switch terminal 4
- to 4WD switch terminal 8 (with 4-wheel drive)
- to front air control terminal 24
- to rear power vent window switch terminal 6
- to DVD player terminal 10 (with DVD entertainment system)
- to pedal adjusting switch terminal 6
- to A/T device terminal 12
- to front heated seat switch LH and RH terminal 6
- to VDC OFF switch terminal 4
- to tow mode switch terminal 4
- to headlamp aiming switch terminal 4
- to clock terminal 4 and
- to combination meter terminal 18.

Ground is supplied
- to illumination control switch terminal 3
- to glove box lamp terminal 2
- to display control unit terminal 3
- to rear heated seat switches terminal 6
- to electric brake (pre-wiring) terminal 1 (with trailer tow) and
- to compass and thermometer terminal 7
- through grounds M57, M61 and M79, and
- to NAVI control unit terminal 1
- to rear air control terminal 3 and
- to rear audio remote control unit terminal 15
- through grounds B117 and B132.

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 activated), 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, the illumination lamps illuminate again.
Exterior lamp battery saver control mode can be changed by the function setting of CONSULT-II.

CAN Communication System Description
Refer to LAN-26, "Information Bus". Information Bus