Instrument Cluster / Carrier: Description and Operation

Illumination

Illumination Schematic

Illumination Schematic (Part 1):

Illumination Schematic (Part 2):

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. 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
- through 15 A fuse (No. 34, located in the IPDM E/R)
- to CPU of the IPDM E/R, and
- through 15 A fuse (No. 41, located in the IPDM E/R)
- to CPU of 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 10 A fuse [No.21, located in fuse block (J/B)]
- to BCM terminal 57.

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.

With the ignition switch in the ACC or ON position, power is supplied
- through 10 A fuse [No. 6, located in the fuse block (J/B)]
- to BCM terminal 11.

Ground is supplied
- to BCM terminal 67
- through grounds M57, M61, and M79, and
- to IPDM E/R terminals 38 and 60
- through grounds 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 which, when energized, directs power
- through IPDM E/R terminal 22
- to illumination control switch terminal 1
- to CVT device terminal 1
- to TCS OFF switch terminal 3 (without VDC)
- to VDC OFF switch terminal 3 (with VDC)
- to AV switch terminal 3
- to hazard switch terminal 3
- to NAVI control unit terminal 61 (with NAVI)
- to front air control switch terminal 5
- to audio unit terminal 9 (without NAVI), terminal 8 (with NAVI)
- to front heated seat switch (LH and RH) terminal 5 (with front heated seats)
- to heated steering wheel switch terminal 3 (with heated steering wheel)
- to Bluetooth ON indicator terminal 3 (with Bluetooth)
- to interior room lamp (console box illumination) terminal 2
- to glove box lamp terminal 1
- to main power window and door lock/unlock switch terminal 16
- to power window and door lock/unlock switch RH terminal 5
- to rear sunshade switch (front and rear) terminal 5 (with rear sunshade)
- to rear heated seat switch (LH and RH) terminal 5 (with rear sunshade)
- to door mirror remote control switch terminal 16
- to display control unit terminal 14 (with NAVI)
- to combination meter terminal 13
- to resistor-1 terminal 1
- through resistor-1 terminal 2
- to combination switch (spiral cable) terminal 26
- to steering switch through combination switch (spiral cable) terminal

Illumination control
- through illumination control switch terminal 2
- to CVT device terminal 2
- to TCS OFF switch terminal 4 (without VDC)
- to VDC OFF switch terminal 4 (with VDC)
- to AV switch terminal 4 (with NAVI)
- to hazard switch terminal 4
- to front air control terminal 6
- to audio unit terminal 8 (without NAVI)
- to audio unit terminal 7 (with NAVI)
- to front heated seat switch (LH and RH) terminal 6 (with front heated seats)
- to heated steering wheel switch terminal 4 (with heated steering wheel)
- to interior room lamp (console box illumination) terminal 3
- to main power window and door lock/unlock switch terminal 12
- to power window and door lock/unlock switch RH terminal 1
- to rear sunshade switch (front and rear) terminal 6 (with rear sunshade)
- to rear heated seat switch (LH and RH) terminal 6 (with rear sunshade)
- to door mirror remote control switch terminal 15
- to combination meter terminal 14
- to combination switch (spiral cable) terminal 27
- to steering switch through spiral cable terminal 21.

Ground is supplied
- to illumination control switch terminal 3
- to glove box lamp terminal 2
- to NAVI control unit terminal 1 (with NAVI)
- 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-III.

CAN Communication System Description
Refer to Information Bus.