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. 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 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 55, and
- through 10 A fuse [No.21, located in fuse block (J/B)]
- to BCM terminal 42, and
- through 10 A fuse [No.19, located in fuse block (J/B)]
- to combination meter terminal 24, and
- through BCM terminal 54 (with front only power window anti-pinch system)
- to power window and door lock/unlock switch RH terminal 10, and
- through BCM terminal 54 (with front and rear power window anti-pinch system)
- to power window and door lock/unlock switch RH terminal 10
- to rear power window switch (LH and RH) terminal 10, and
- through BCM terminal 53 (with front only power window anti-pinch system)
- to main power window and door lock/unlock switch LH terminal 10
- to rear power window switch (LH and RH) terminal 6, and
- through BCM terminal 53 (with front and rear power window anti-pinch system)
- to main power window and door lock/unlock switch LH terminal 10.

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, and
- through 10 A fuse [No. 14, located in the fuse block (J/B)]
- to combination meter terminal 23.

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

Ground is supplied
- to BCM terminal 52
- to combination meter terminals 10, 11 and 12
- 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 A/T device terminal 1 (with A/T)
- 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 audio unit terminal 8
- 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 interior room lamp (console box illumination) terminal 2
- to glove box lamp terminal 1
- 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 display unit terminal 4 (without NAVI)
- to door mirror remote control switch terminal 16
- to display control unit terminal 14 (with NAVI)
- to unified meter and A/C amp. terminal 23
- to resistor-1 terminal 1
- through resistor-1 terminal 2
- to spiral cable terminal 26
- to steering switch through spiral cable terminal 18.

Illumination control
- through illumination control switch terminal 2
- to A/T device terminal 2 (with A/T)
- to TCS OFF switch terminal 4 (without VDC)
- to VDC OFF switch terminal 4 (with VDC)
- to AV switch terminal 4
- to hazard switch terminal 4
- to audio unit terminal 7
- 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 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 unified meter and A/C amp. terminal 31
- to 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 main power window and door lock/unlock switch LH terminal 17
- to power window and door lock/unlock switch RH terminal 11
- to NAVI control unit terminal 1 (with NAVI)
- through grounds M57, M61 and M79, and
- to rear power window switch LH terminal 7 (with front only power window anti-pinch system) or terminal 11 (with front and rear power window anti-pinch system)
- through grounds B7 and B19, and
- to rear power window switch RH terminal 7 (with front only power window anti-pinch system) or terminal 11 (with front and rear power window anti-pinch system)
- 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-25, Information Bus. Information Bus