System Description

PARKING, LICENSE PLATE AND TAIL LAMPS


System Description

The control of the parking, license plate and tail lamp operation is dependent upon the position of the lighting switch (combination switch). When the lighting switch is placed in the 1ST position, the BCM (body control module) receives input signal requesting the parking, license plate and tail 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) located in the IPDM E/R controls the tail lamp relay coil. This relay, when energized, directs power to parking, license plate and tail lamps, which then illuminate.

OUTLINE
Power is supplied at all times
- through 15A fuse (No. 71, located in IPDM E/R)
- to CPU located in IPDM E/R, and
- to tail lamp relay located in IPDM E/R, � through 15A fuse (No. 78, located in IPDM E/R)
- to CPU located in IPDM E/R, � through 50A fusible link (letter F, located in fuse, fusible link and relay block)
- to BCM terminal 55, � through 10A fuse [No. 21, located in fuse block (J/B)]
- to BCM terminal 42, � through 10A fuse [No. 22, located in fuse block (J/B)]
- to key slot terminal 1.
With the ignition switch in the ON or START position, power is supplied
- to CPU located in IPDM E/R, � through 15A fuse [No. 1, located in fuse block (J/B)]
- to BCM terminal 38.
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.
Ground is supplied
- to BCM terminal 52
- through grounds M16 and M70, � to IPDM E/R terminals 38 and 51
- through grounds E22 and E43.

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 parking, license plate and tail lamps to illuminate. This input signal is communicated to the IPDM E/R across the CAN communication lines. The CPU located in the IPDM E/R controls the tail lamp relay coil, which when energized, directs power
- through IPDM E/R terminal 21
- to front combination lamp LH and RH terminals 5 (parking)
- to front combination lamp LH and RH terminals 7 (side marker)
- to rear combination lamp LH and RH terminals 1 (tail and side marker)
- to license plate lamp LH and RH terminals 1.
Ground is supplied at all times
- to front combination lamp LH and RH terminals 1 (parking and side marker)
- through grounds E22 and E43, � to rear combination lamp LH and RH terminals 4 (tail and side marker)
- through grounds B5, B40 and B131.
- to license plate lamp LH and RH terminals 2
- through grounds B402 and B405.
With power and ground supplied, the parking, license plate and tail lamps illuminate.
The unified meter and A/C amp. that received the position light request signal by BCM across the CAN communication makes a tail lamp indicator lamp turn on in the combination meter.

COMBINATION SWITCH READING FUNCTION
System Description.

EXTERIOR LAMP BATTERY SAVER CONTROL
When the combination switch (lighting switch) is in the 1ST (or 2ND) position, and ignition switch is turned from ON or ACC to OFF, battery saver control feature is activated.
Under this condition, parking, license plate, side marker and tail lamps remain illuminated for 5 minutes, then the parking, license plate, side marker and tail lamps are turned off.
Exterior lamp battery saver control mode can be changed by the function setting of CONSULT-III.