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 g, 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 3.

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. 1, located in the fuse block (J/B)]
- to BCM terminal 38.

Ground is supplied
- to BCM terminal 67 and
- to combination meter terminal 13 and 23
- 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. 37, located in the IPDM E/R)
- through IPDM E/R terminal 57
- to door mirror remote control switch terminal 16 (with power outside mirrors)
- to hazard switch terminal 3
- to audio unit terminal 8
- to 4WD shift switch terminal 7 (with 4-wheel drive)
- to front air control terminal 8
- to clutch interlock cancel switch terminal 5 (with clutch interlock cancel switch)
- to differential lock switch terminal 4 (with electronic locking rear differential)
- to electric brake (pre-wiring) terminal 4
- to A/T device terminal 3 (with A/T)
- to VDC OFF switch terminal 3 (with VDC)
- to HDC switch terminal 5 (with hill descent control and hill start assist).

Illumination is controlled
- through combination meter terminal 22
- to door mirror remote control switch terminal 15 (with power outside mirrors)
- to hazard switch terminal 4
- to audio unit terminal 7
- to 4WD switch terminal 8 (with 4-wheel drive)
- to front air control terminal 9
- to clutch interlock cancel switch terminal 6 (with clutch interlock cancel switch)
- to differential lock switch terminal 5 (with electronic locking rear differential)
- to A/T device terminal 5 (with A/T)
- to VDC OFF switch terminal 4 (with VDC)
- to HDC switch terminal 6 (with hill descent control and hill start assist).

Ground is supplied
- to electric brake (pre-wiring) terminal 1
- through grounds M57, M61 and M79.

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 Information Bus.