Turn Signals: Description and Operation

System Description

TURN SIGNAL OPERATION
When the ignition switch is in ON or START position, power is supplied
- through 10 A fuse [No.1, located in fuse block (J/B)]
- to BCM (body control module) terminal 38,
- through 10 A fuse [No.12, located in fuse block (J/B)]
- to unified meter and A/C amp. terminal 22,
- through 10 A fuse [No.14, located in fuse block (J/B)]
- to combination meter terminal 23.

Ground is supplied
- to BCM terminal 52
- through grounds M30 and M66,
- to unified meter and A/C amp. terminals 29 and 30
- through grounds M30 and M66,
- to combination meter terminals 10, 11 and 12
- through grounds M30 and M66.

LH Turn Signal Lamp
When the turn signal switch is moved to the left position, the BCM receives left turn signal by combination switch reading function (Refer to "COMBINATION SWITCH READING FUNCTION" ). Power is supplied
- through BCM terminal 45
- to front combination lamp LH terminal 2*1
- to front combination lamp LH terminal 1*2 and
- to rear combination lamp LH terminal 2.

Ground is supplied
- to front combination lamp LH terminal 1*1
- through grounds E17, E43 and F152 l to front combination lamp LH terminal 4*2 l through grounds E17, E43 and F152,
- to rear combination lamp LH terminal 4
- through grounds T14, B5, B6 and D105.

The BCM also supplies ground to unified meter and A/C amp. terminals 1and 11 across the CAN communication lines. This input signal is processed by the unified meter control unit in the combination meter through unified meter and A/C amp., which in turn supplies ground to left turn signal indicator lamp.

With the power and ground supplied, The BCM controls the flashing of LH turn signal lamps.

NOTE:
*1: Xenon headlamp, *2: halogen headlamp.

RH Turn Signal Lamp
When the turn signal switch is moved to the right position, the BCM receives right turn signal by combination switch reading function (Refer to "COMBINATION SWITCH READING FUNCTION"). Power is supplied
- through BCM terminal 46
- to front combination lamp RH terminal 2*1
- to front combination lamp RH terminal 1*2 and
- to rear combination lamp RH terminal 2.

Ground is supplied
- to combination lamp RH terminal 1*1
- through grounds E17, E43 and F152
- to front combination lamp RH terminal 4*2
- through grounds E17, E43 and F152,
- to rear combination lamp RH terminal 4
- through grounds T14, B5, B6 and D105.

BCM also supplies ground to unified meter and A/C amp. terminals 1 and 11 across CAN communication lines. This input is processed by unified meter control unit in combination meter through unified meter and A/C amp., which in turn supplies ground to the right turn signal indicator lamp.

With power and ground supplied, BCM controls the flashing of RH turn signal lamps.

NOTE:
*1: Xenon headlamp, *2: Halogen headlamp.

REMOTE KEYLESS ENTRY SYSTEM OPERATION
Refer to "REMOTE KEYLESS ENTRY SYSTEM".

COMBINATION SWITCH READING FUNCTION
Refer to "COMBINATION SWITCH READING FUNCTION".

CAN Communication System Description
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a vehicle, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads required data only.

CAN Communication Unit
Refer to "Information Bus".