System Description

ILLUMINATION

System Description

The control of the illumination lamps operation is dependent upon the position of the combination switch (lighting and turn signal switch). When the combination switch (lighting and turn signal switch) is placed in the 1ST
or 2ND position, the BCM (body control module) receives input signal requesting the illumination lamps to illuminate. This input signal is communicated to IPDM E/R (intelligent power distribution module engine room)
across CAN communication lines. CPU (central processing unit) located in 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 IPDM E/R, - to tail lamp relay, located in IPDM E/R, - through 15A fuse (No. 52, located in IPDM E/R) and
- through 20A fuse (No. 53, located in IPDM E/R)
- to CPU located in IPDM E/R, - through 50A fusible link (letter
j, located in fuse and fusible link box)
- to BCM terminal 70, and
- through 10A fuse [No. 21, located in fuse block (J/B)]
- to BCM terminal 57, - through 10A fuse [No. 19, located in fuse block (J/B)]
- to combination meter terminal 1.
With the ignition switch in the ACC or ON position, power is supplied
- through 10A fuse [No. 6, located in fuse block (J/B)]
- to BCM terminal 11.
With the ignition switch in the ON or START position, power is supplied
- to ignition relay, located in IPDM E/R, and
- through 10A fuse [No. 12, located in fuse block (J/B)]
- to BCM terminal 38, - through 10A fuse [No. 14, located in fuse block (J/B)]
- to combination meter terminal 2.
Ground is supplied
- to BCM terminal 67, - to combination meter terminals 3, 21 and 22 and
- to glove box lamp terminal 2
- through grounds M57 and M61, and
- to IPDM E/R terminals 39 and 59
- through grounds E9, E15 (all models) and E24 (with MR-20DE).

ILLUMINATION OPERATION BY COMBINATION SWITCH (LIGHTING AND TURN SIGNAL


SWITCH)

With the combination switch (lighting and turn signal switch) in the 1ST or 2ND position, BCM receives input signal requesting the illumination lamps to illuminate. This input signal is communicated to IPDM E/R across
CAN communication lines. CPU located in the IPDM E/R controls the tail lamp relay coil, which, when energized, directs power
- through 10A fuse (No. 36, located in IPDM E/R)
- through IPDM E/R terminal 27
- to audio unit terminal 9 (with audio unit), - to AV control unit terminal 9 (with AV control unit), - to front air control terminal 23, - to hazard switch terminal 3, - to manual mode select switch terminal 4 (with QR-25DE), - to heated seat switches LH and RH terminal 5 (if equipped), - to VDC OFF switch terminal 3, - through resistor 1 terminals 1 and 2
- through combination switch (spiral cable) terminals 34 and 14
- to steering wheel audio control switch (if equipped), - to ASCD steering switch (if equipped),
- to steering shift switch (if equipped), - to CVT shift selector terminal 1 (with CVT).
The illumination control switch controls illumination intensity by varying ground
- through combination meter terminal 13
- to CVT shift selector terminal 2 (with CVT), - to audio unit terminal 8 (with audio unit), - to AV control unit terminal 8 (with AV control unit), - to front air control terminal 24, - to hazard switch terminal 4, - to manual mode select switch terminal 5 (with QR-25DE)
- through combination switch (spiral cable) terminals 21 and 27
- to steering wheel audio control switch (if equipped), - to ASCD steering switch (if equipped), - to steering shift switch (if equipped), - to heated seat switches LH and RH terminal 6 (if equipped), - to VDC OFF switch terminal 4
- through combination meter terminal 33 (with double meter)
- to double meter terminal 12.
With power and ground supplied, illumination lamps illuminate.