Lighting System: Overview Infiniti M45 III рестайлинг

System Description

The control of the headlamp system operation is dependent upon the position of the combination switch (lighting switch). When the lighting switch is placed in the 2ND position, the BCM (body control module) receives input signal requesting the headlamps (and tail lamps) 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 headlamp high and headlamp low relay coils. These relays, when energized, direct power to the respective headlamps, which then illuminate.

Low Beam Operation

With the lighting switch in 2ND position, the BCM receives input signal requesting the headlamps 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 headlamp low relay coil, which when energized, directs power

1. through 15A fuse (No. 76, located in IPDM E/R)
2. through IPDM E/R terminal 20
3. to front combination lamp RH terminal 8
4. through 15A fuse (No. 86, located in IPDM E/R)
5. through IPDM E/R terminal 30
6. to front combination lamp LH terminal 8.

High Beam Operation/Flash-to-Pass Operation

With the lighting switch in 2ND position and placed in HIGH or PASS position, the BCM receives input signal requesting the headlamp high beams and low beams 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 headlamp high relay coil and low relay coil, which when energized, directs power

1. through 15A fuse (No. 76, located in IPDM E/R)
2. through IPDM E/R terminal 20
3. to front combination lamp RH terminal 8
4. through 15A fuse (No. 86, located in IPDM E/R)
5. through IPDM E/R terminal 30
6. to front combination lamp LH terminal 8
7. through 10A fuse (No. 72, located in IPDM E/R)
8. through IPDM E/R terminal 27
9. to front combination lamp RH terminal 6
10. through 10A fuse (No. 74, located in IPDM E/R)
11. through IPDM E/R terminal 28
12. to front combination lamp LH terminal 6.

AUTO LIGHT OPERATION

Refer to " SYSTEM DESCRIPTION ".

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.

General Information for Xenon Headlamp Trouble Diagnosis

In most cases, malfunction of xenon headlamp - "does not illuminate", "flickers" or "dark" - is caused by a malfunctioning xenon bulb. A HID control unit or lamp housing, however, may be a cause of malfunction. Be sure to perform trouble diagnosis following the steps described below.

DAYTIME LIGHT SYSTEM turns on daytime light lamps while driving. Daytime light lamps are not turned on if engine is activated with parking brake on. Take off parking brake to turn on daytime light lamps. The lamps turn off when lighting switch is in the 2ND position or AUTO position (Head lamp is "ON") and when lighting switch is in the PASSING position. (Daytime light lamps are not turned off only by parking brake itself.) A parking brake signal and engine run or stop signal are sent to BCM (body control module) by CAN communication line, and control daytime light system.

With the lighting switch in 2ND position, the BCM receives input signal requesting the headlamps to illuminate. This input signal is communicated to IPDM E/R across the CAN communication lines. The CPU located in the IPDM E/R controls the headlamp low relay coil, which when energized, directs power

1. through 15A fuse (No. 76, located in IPDM E/R)
2. through IPDM E/R terminal 20
3. to front combination lamp RH terminal 8
4. through 15A fuse (No. 86, located in IPDM E/R)
5. through IPDM E/R terminal 30
6. to front combination lamp LH terminal 8.

High Beam Operation (When Daytime Light Does Not Operate)/Flash-to-Pass Operation

With the lighting switch in 2ND position and placed in HIGH BEAM or PASSING position, the BCM receives input signal requesting headlamp high beams to illuminate. High beam request signal is communicated to the IPDM E/R across the CAN communication lines. The CPU located in the IPDM E/R controls headlamp high relay coil and low relay coil, which when energized, directs power

1. through 10A fuse (No. 72, located in IPDM E/R)
2. through IPDM E/R terminal 27
3. through front combination lamp RH terminals 6 and 2
4. to daytime light relay terminal 3
5. through 10A fuse (No. 74, located in IPDM E/R)
6. through IPDM E/R terminal 28
7. to front combination lamp LH terminal 6
8. through 15A fuse (No. 76, located in IPDM E/R)
9. through IPDM E/R terminal 20
10. to front combination lamp RH terminal 8
11. through 15A fuse (No. 86, located in IPDM E/R)
12. through IPDM E/R terminal 30
13. to front combination lamp LH terminal 8.

DAYTIME LIGHT OPERATION

With the engine running, the lighting switch in the OFF or AUTO position (headlamp is not illuminate) and parking brake released, the IPDM E/R receives input request signal from BCM to turn on daytime light. This input is communicated across the CAN communication lines. The CPU of the IPDM E/R controls the daytime light relay coil. When energized, this relay directs power

1. through daytime light relay terminals 5 and 3
2. through front combination lamp RH terminal 2
3. through front combination lamp RH terminal 6
4. through IPDM E/R terminal 27
5. through 10A fuse (No. 72, located in IPDM E/R)
6. through 10A fuse (No. 74, located in IPDM E/R)
7. through IPDM E/R terminal 28
8. to front combination lamp LH terminal 6.

Ground is supplied

1. to combination lamp LH terminal 2
2. through grounds E22 and E43.

With power and grounds supplied, the daytime lights illuminate. The high beam headlamps are now wired in series and illuminate at a reduced intensity.

For auto light operation, refer to " 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.

In most cases, malfunction of xenon headlamp - "does not illuminate", "flickers" or "dark" - is caused by a malfunctioning xenon bulb. A HID control unit or lamp housing, however, may be a cause of malfunction. Be sure to perform trouble diagnosis following the steps described below.

Automatically turns ON/OFF the parking lamps and the headlamps in accordance with ambient light. Timing for when lamps turn ON/OFF can be selected using four modes.

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 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 the high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads required data only.

AFS control unit controls AFS and headlamp auto aiming.

The following signals are input to AFS control unit via CAN communication

1. Steering angle sensor signal
2. A/T position indicator signal
3. Low beam status signal
4. Vehicle speed signal
5. Engine speed signal

Other signals are input as follows

1. AFS switch signal from AFS switch connected to AFS control unit
2. Height sensor signal from height sensor connected to AFS control unit
3. Swivel position sensor signal from swivel position sensor built into both right and left swivel actuators connected to AFS control unit

In response to the state of control, AFS control unit switches commands of AFS off indicator signal sent to unified meter and A/C amp. via CAN communication; and then turns on/off or blinks AFS off indicator lamp built in the combination meter.

AFS increases viewability of cornering direction by changing light axis automatically to the direction of travel with low beam headlamps during vehicle's cornering.

AFS switch allows AFS function to be stopped.

AFS control unit determines the current vehicle conditions by each received signals, and sends commands to the low beam headlamp to swivel. With the headlamps (HIGH/LOW) illuminated, the AFS switch on, engine running and the A/T select lever in any position but range P or range R, the low beam headlamps are operative by AFS control unit commands.

As the steering wheel is turned to the left (right), the left (right) low beam headlamp will automatically swivel angle in accordance with the steering angle and vehicle speed, and stop the operation when the steering wheel is returned to the straight-ahead position.

Swivel operation allows drive signal to be sent to the swivel actuator on the side that AFS control unit is actuated.

Step motor built in swivel actuator adjusts low beam projector of headlamp to swivel angle that matches drive signal. Swivel position sensor built in swivel actuator detects swivel angle and transmits a swivel position sensor signal to the AFS control unit. AFS control unit monitors if swivel operation is performed normally via swivel position sensor signal.

1. Swivel operation

SWIVEL OPERATION CHART

Scheme 1

HEADLAMP AUTO AIMING REFERENCE VALUE

Headlamp auto aiming control automatically corrects vertical deviation of light axis that is brought by the change of vehicle height with changing number of passenger and laden weight, and relieves dazzle to oncoming vehicles.

AFS control unit determines the current vehicle conditions by each received signals, and sends commands to the low beam headlamps to auto aiming. With the headlamps (HIGH/LOW) illuminated and engine running, the low beam headlamps are operative by AFS control unit commands.

The height sensor is located on the left side of the rear suspension member and detects rear vehicle height change by sensing the displacement of the rear suspension arm. And transmits a height sensor signal to the AFS control unit.

With reference to the rear vehicle height under the empty condition, light axis of low beam with low rear vehicle height is relatively higher than that with the empty condition. AFS control unit switches drive signal corrects height of low beam axis to maintain height of light axis with empty condition.

Light axis of low beam with high rear vehicle height is relatively lower than that with empty condition. Light axis of low beam with empty condition is set as upper limit of headlamp auto aiming control operation. Control to correct deviation is not performed when light axis of low beam gets relatively higher than that with empty condition. Timing of control is switched in accordance with driving conditions.

1. Headlamp auto aiming operation

HEADLAMP AUTO AIMING OPERATION CHART

AFS OPERATION

When The Steering Wheel Is Turned To The Left

Swivel motor driving signal (1-phase) is transmitted when the steering wheel is turned to left approximately more than 10* degrees (predetermined), with vehicle speed at approximately 25 km/h (15.5 MPH) or more, headlamps (HIGH/LOW) illuminated, AFS switch ON and the engine running and the A/T select lever in any position except range P or R.

*: Slightly different from the case when it is turned to the right.

Swivel motor driving signal (1-phase) is sent

1. to front combination lamp LH terminal 17
2. through AFS control unit terminal 15
3. to AFS control unit terminal 38
4. through front combination lamp LH terminal 21.

And swivel motor driving signal (2-phase) is sent

1. to front combination lamp LH terminal 16
2. through AFS control unit terminal 17
3. to AFS control unit terminal 36
4. through front combination lamp LH terminal 20.

Scheme 2

Swivel position sensor detects swivel angle during ignition switch ON, and transmits swivel position sensor signals to the AFS control unit

When ignition switch is turn to ON position, power is supplied

1. to front combination lamp LH terminal 15
2. through AFS control unit terminal 24.

When ignition switch is turn to ON position, swivel position sensor signal input is supplied

1. to AFS control unit terminal 29
2. through front combination lamp LH terminal 14.

Ground is supplied

1. to front combination lamp LH terminal 19
2. through AFS control unit terminal 27.

The low beam headlamp LH starts to swivel to the left.

The swivel motor driving signals are blocked and the swivel motion stops when the steering angle reaches approximately more than 80 degrees (predetermined). The low beam headlamp will not swivel any further no matter how further left. As the steering wheel is turned back to the right, the swivel motor driving signals (both 1-phase and 2-phase) will be reversed, causing low beam headlamp LH to start swiveling to the right. When steering angle becomes smaller than predetermined value, the low beam headlamp is set in the straight-ahead position, swivel motor driving signals are blocked and low beam headlamps stop swiveling.

Scheme 3

When The Steering Wheel Is Turned To The Right Swivel motor driving signal (1-phase) is transmitted when the steering wheel is turned to right approximately more than 10* degrees (predetermined), with headlamps (HIGH/LOW) illuminated, AFS switch ON, the engine running and the A/T select lever in any position except range P or R.

*: Slightly different from the case when it is turned to the left.

Swivel motor driving signal (1-phase) is sent

1. to front combination lamp RH terminal 16
2. through AFS control unit terminal 34
3. to AFS control unit terminal 11
4. through front combination lamp RH terminal 20.

And swivel motor driving signal (2-phase) is sent

1. to front combination lamp RH terminal 17
2. through AFS control unit terminal 32
3. to AFS control unit terminal 13
4. through front combination lamp RH terminal 21.

Swivel position sensor detects swivel angle during ignition switch ON, and transmits swivel position sensor signals to the AFS control unit

When ignition switch is turn to ON position, power is supplied

1. to front combination lamp RH terminal 15
2. through AFS control unit terminal 4.

When ignition switch is turn to ON position, swivel position sensor input signal is supplied

1. to AFS control unit terminal 9
2. through front combination lamp RH terminal 14.

Ground is supplied

1. to front combination lamp RH terminal 19
2. through AFS control unit terminal 2.

The low beam headlamp RH starts to swivel to the right.

The swivel motor driving signals are blocked and the swivel motion stops when the steering angle reaches approximately more than 80 degrees (predetermined). The low beam headlamp will not swivel any further no matter how further right. As the steering wheel is turned back to the left, the swivel motor driving signals (both 1-phase and 2-phase) will be reversed, causing low beam headlamp RH to start swiveling to the left. When steering angle becomes smaller than predetermined value, the low beam headlamp is set in the straight-ahead position, swivel motor driving signals are blocked and low beam headlamps stop swiveling.

AFS OFF INDICATOR OPERATION

In response to the state of control, AFS control unit switches commands of AFS off indicator signal sent to unified meter and A/C amp. via CAN communication; and then turns on/off or blinks AFS off indicator lamp built in the combination meter depending on the following condition.

1. Bulb check operation

AFS off indicator lamp is turned off after illuminating for one second as a bulb check for AFS off indicator lamp when turn ignition switch ON is detected.

Note. AFS off indicator lamp is turned off without a lapse of one second when start of the engine is detected.

Scheme 4

1. AFS switch operation

AFS off indicator lamp is illuminated while AFS switch is OFF.

AFS off indicator lamp is turned off while AFS switch is ON.

1. System warning operation

AFS off indicator lamp illuminates at intervals of approximately one second when AFS control unit detects any specific DTC (diagnosis trouble code), or when unified meter and A/C amp. cannot receive AFS off indicator signals.

Note. Unified meter and A/C amp. transmits a command to combination meter to blink AFS off indicator lamp when they cannot receive AFS off indicator signal.

HEADLAMP AUTO AIMING OPERATION

The height sensor detects a change in height of rear vehicle with ignition switch ON, and transmits signals to the AFS control unit

When ignition switch is turn to ON position, power is supplied

1. to height sensor terminal 1
2. through AFS control unit terminal 6.

When ignition switch is turned to ON position, height sensor input signal is supplied

1. to AFS control unit terminal 28
2. through height sensor terminal 2.

Ground is supplied

1. to height sensor terminal 3
2. through AFS control unit terminal 8.

Aiming motor driving signal (voltage signal that corresponds to the vehicle height) is transmitted depending on the height sensor signal at the start of the engine

1. to front combination lamp LH (aiming motor) terminal 12
2. through AFS control unit terminal 40
3. to front combination lamp RH (aiming motor) terminal 12
4. through AFS control unit terminal 19.

Output of aiming motor driving signal is maintained unless headlamp (HIGH/LOW) illuminate detected.

Auto aiming control operation starts when headlamps (HIGH/LOW) illuminate detected.

When headlamps (HIGH/LOW) illuminate, output of aiming motor driving signal is changed according to the height sensor signal. After the change, it is changed according to height sensor signals with predetermined timing based on driving condition while headlamps are ON.

Auto Aiming Operation

AFS control unit starts outputting aiming motor drive signal when the engine starts, and continues to output it until the engine stops. Aiming motor drive signal changes output when the specified conditions described below are met.

Headlamp aiming motors set the low beam projectors according to aiming motor drive signals received from AFS control unit, both headlamp aiming motors cause the low beam projectors to move to the position commanded by the signal.

The aiming motor drive signal level retains when the following conditions are not met.

1. AFS control unit operation when the vehicle is stopped (low beam headlamps illuminated) Headlamp aiming motor drive signal is changed when vehicle height is stabilized with a parked condition, depending on the height sensor signal detected with height sensor signal by AFS control unit.
2. AFS control unit operation when the vehicle is running (low beam headlamps illuminated) When vehicle is running, headlamp aiming motor drive signal is changed depending on the height sensor signal which is detected when AFS control unit detects constant steady speed of vehicle. When the vehicle is accelerating or decelerating, AFS control unit keeps headlamp aiming motor drive signal voltage level rather than changing it, so that the low beam projectors of both headlamps do not operate.

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.

Description of DTC and Solutions after Detection

CONSULT-III can detect DTC (Diagnosis trouble code). The descriptions and solutions of DTC are listed below.

FAIL-SAFE CHART

AFS Operation Check (Function Test)

1. CHECK SWIVEL ACTUATOR CONSULT-III ACTIVE TEST Start engine and turn lighting switch to 2ND position. Select "LOW BEAM TEST RIGHT" or "LOW BEAM TEST LEFT" of ADAPTIVE LIGHT active test item. Touch "ORIGIN-FAST/SLOW" and "PEAK-FAST/SLOW" screen. Make sure of swivel operation. ACTIVE TEST CHART TEST ITEM ORIGIN PEAK Light axis range at 10 m (394.7 in) off (Reference value) LOW BEAM TEST RIGHT Swivel angle 0° Swivel angle 7° to 13° Approx. 1.200 to 2.300 mm (47 to 91 in) LOW BEAM TEST LEFT Swivel angle 0° Swivel angle 17° to 23° Approx. 3.000 to 4.200 mm (118 to 165 in) OK or NG OK: GO TO 2. NG: When interference or poor fitment is found, perform aiming adjustment. Refer to " «AIMING ADJUSTMENT»(ref-356281-S40043530922010021300000) ". If it is normal, replace headlamp. Refer to " «REMOVAL AND INSTALLATION OF FRONT COMBINATION LAMP»(ref-356281-S11892960792010021300000) ". When the operation range is irregular, perform aiming adjustment. Refer to " «AIMING ADJUSTMENT»(ref-356281-S40043530922010021300000) ". If it is normal, GO TO 3 .
2. CHECK STEERING ANGLE SENSOR CONSULT-III DATA MONITOR Check "STR ANGLE SIG" in "Data Monitor" when driving straight and steering turn 90° to right or left. STEERING ANGLE REFERENCE Steering condition STR ANGLE SIG (Data monitor) Driving straight -5.0 ° to + 5.0° Turn 90° to right Approx. + 90° Turn 90° to left Approx. - 90° OK or NG OK: GO TO 3. NG: When steering is out of range while driving straight, perform steering angle sensor adjustment. Refer to " «ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION»(ref-356279-S26560990062010021300000) " in " ". When the function is normal while driving straight but the displayed value is different from actual steering position with turning to right or left, replace steering angle sensor. Refer to " «REMOVAL AND INSTALLATION OF STEERING ANGLE SENSOR»(ref-356281-S08634140852010021300000) ".
3. CHECK SWIVEL ACTUATOR AND AFS CONTROL UNIT CONSULT-III DATA MONITOR Check "SWVL SEN RH/LH" and "SWVL ANGLE RH/LH" in "Data Monitor" with steering turning to right or left under swivel operative condition. SWIVEL ACTUATOR AND AFS CONTROL UNIT REFERENCE TEST ITEM Turn 180° or more to left Turn 180° or more to right SWVL SEN RH SWVL ANGLE RH Approx. 0° 7° to 13° SWVL SEN LH SWVL ANGLE LH 17° to 23° Approx. 0° NOTE: The angle can be slightly different between the displayed value on "SWVL SEN" and that on "SWVL ANGLE" even when AFS operation is normal. OK or NG OK: AFS function is normal. NG: When the difference is 4.5° or more between the displayed value on "SWVL ANGLE" and that on "SWVL SEN", replace headlamp. When the displayed angle on "SWVL ANGLE" is irregular, replace AFS control unit.

Auto Aiming Operation Check (Function Test)

1. CHECK AIMING MOTOR CONSULT-III ACTIVE TEST Start engine and turn lighting switch to 2ND position. Select "LEVELIZER TEST" of ADAPTIVE LIGHT active test item. Touch "ORIGIN" and "PEAK" screen. Make sure of auto aiming operation. ACTIVE TEST CHART TEST ITEM ORIGIN PEAK (Reference value) Light axis range at 10 m (393.7 in) off (Reference value) LEVELIZER TEST Light axis angle 0° Light axis angle approx. 2.5° Approx. 450 mm (17.7 in) OK or NG OK: GO TO 2. NG: When interference or poor fitment is found, perform aiming adjustment. Refer to " «AIMING ADJUSTMENT»(ref-356281-S40043530922010021300000) ". If it is normal, replace headlamp. Refer to " «REMOVAL AND INSTALLATION OF FRONT COMBINATION LAMP»(ref-356281-S11892960792010021300000) ". When the operation range is irregular, perform aiming adjustment. Refer to " «AIMING ADJUSTMENT»(ref-356281-S40043530922010021300000) ". If it is normal, GO TO 4 .
2. PERFORM STATE LEVELIZER ADJUSTMENT 1 CONSULT-III DATA MONITOR Check "LEV ACTR VLTG" in "Data Monitor" with unloaded vehicle position. (Remove all loads in driver, passenger and trunk rooms.) TEST ITEM CHART TEST ITEM Unloaded vehicle position LEV ACTR VLTG Approx. 70% OK or NG OK: GO TO 3. NG: Perform LEVELIZER ADJUSTMENT. Refer to " «CONSULT-III FUNCTION (ADAPTIVE LIGHT)»(ref-356281-S38951738912010021300000) ".
3. PERFORM STATE LEVELIZER ADJUSTMENT 2 CONSULT-III DATA MONITOR Check if "LEV ACTR VLTG" changes approx. 3 seconds after lowering vehicle height as low as approx. -0.5V from the value of "HI SEN OTP RR" in "Data Monitor" at unloaded vehicle position. (Remove all loads in driver, passenger and trunk rooms.) OK or NG OK: GO TO 4. NG: Perform LEVELIZER ADJUSTMENT. Refer to " «CONSULT-III FUNCTION (ADAPTIVE LIGHT)»(ref-356281-S38951738912010021300000) ".
4. CHECK HEIGHT SENSOR SIGNAL AND AIMING MOTOR DRIVE SIGNAL CONSULT-III DATA MONITOR Remove height sensor link bracket mounting nuts (rear stabilizer side). For details, refer to " «REMOVAL AND INSTALLATION OF HEIGHT SENSOR»(ref-356281-S06169978012010021300000) ". Change sensor angle from the basic point of sensor angle 0° (standard position) and check "HI SEN OTP RR" and "LEV ACTR VLTG" of "Data Monitor". SENSOR ANGLE REFERENCE Sensor angle Vehicle height A Approx. -103° (Link stopper angle) Low side B 0° (Standard position) Unloaded vehicle position C Approx. 46° (Link stopper angle) High side With 18-inch wheel SENSOR ANGLE REFERENCE Sensor angle "HI SEN OTP RR" "LEV ACTR VLTG" Light axis range at 10 m (393.7 in) off (Reference value) Limit value of vehicle height (high side) Approx. 45° Approx. 4.5 V Approx. 70.0% - Maximum angle of auto aiming operation (1) (Unloaded vehicle position) Approx. 0° Approx. 2.5 V Approx. 70.0% 0 Minimum angle of auto aiming operation (1) (Maximum laden condition) Approx. -35° Approx. 1.0 V (2) Approx. 38.0% Approx. 200 mm (7.9 in) Limit value of vehicle height (low side) Approx. -45° Approx. 0.5 V Approx. 38.0% - (1) Reference value. The value can be different from that of sensor angle and HI SEN OTP RR of maximum/minimum angle of auto aiming operation depending on LEVELIZER ADJUSTMENT state. (2) Reference value. Approx. -1.5 V from the LEVELIZER ADJUSTMENT value. With 19-inch wheel SENSOR ANGLE REFERENCE Sensor angle "HI SEN OTP RR" "LEV ACTR VLTG" Light axis range at 10 m (393.7 in) off (Reference value) Limit value of vehicle height (high side) Approx. 45° Approx. 4.5 V Approx. 70.0% - Maximum angle of auto aiming operation (1) (Unloaded vehicle position) Approx. 0° Approx. 2.5 V Approx. 70.0% 0 Minimum angle of auto aiming operation (1) (Maximum laden condition) Approx. -27° Approx. 1.3 (2) Approx. 41.8% Approx. 180 mm (7.1 in) Limit value of vehicle height (low side) Approx. -45° Approx. 0.5 V Approx. 41.8% - (1) Reference value. The value can be different from that of sensor angle and HI SEN OTP RR of maximum/minimum angle of auto aiming operation depending on LEVELIZER ADJUSTMENT state. (2) Reference value. Approx. -1.2 V from LEVELIZER ADJUSTMENT value. OK or NG OK: Auto aiming operation function is normal. NG: When approx. 4.5 V or 0.5 V is not displayed on "HI SEN OTP RR" screen with sensor angle approx. 45° or -45°, check connector for connection, bend and loose fit. If it is normal, replace height sensor. Refer to " «REMOVAL AND INSTALLATION OF HEIGHT SENSOR»(ref-356281-S06169978012010021300000) ". When "HI SEN OTP RR" value is normal but "LEV ACTR VLTG" value differs from maximum/minimum angle of auto aiming operation, replace AFS control unit. Refer to " «REMOVAL AND INSTALLATION OF AFS CONTROL UNIT»(ref-356281-S23046224442010021300000) ". When "LEV ACTR VLTG" value is normal but operation range is irregular, check aiming motor system circuit. Refer to " «AUTO AIMING DOES NOT OPERATE (CHECK AIMING MOTOR SYSTEM CIRCUIT)»(ref-356281-S06269845572010021300000) ".

Scheme 5

Scheme 6

Scheme 7

Scheme 8

Scheme 9

1. CHECK AFS SWITCH SIGNAL 1 CONSULT-III DATA MONITOR Turn ignition switch ON. Select "AFS SW" of ADAPTIVE LIGHT data monitor item. With operating the AFS switch, check the monitor status. OK or NG OK: Replace AFS control unit. Refer to " «REMOVAL AND INSTALLATION OF AFS CONTROL UNIT»(ref-356281-S23046224442010021300000) ". NG: GO TO 2.
2. CHECK AFS SWITCH Turn ignition switch OFF. Disconnect AFS switch connector. Check continuity AFS switch. TERMINAL CONTINUITY REFERENCE AFS switch Condition Continuity Terminal 1 4 AFS switch is ON. No AFS switch is OFF. Yes OK or NG OK: GO TO 3. NG: Replace AFS switch. Refer to " «REMOVAL AND INSTALLATION OF AFS SWITCH»(ref-356281-S21264821972010021300000) ".
3. CHECK AFS SWITCH SIGNAL 2 Connect AFS switch connector. Turn ignition switch ON. Check voltage between AFS control unit harness connector and ground according to AFS switch operation. TERMINAL VOLTAGE REFERENCE (+) (-) Condition Voltage (Approx.) AFS control unit connector Terminal F110 3 Ground AFS switch is ON. 0 V AFS switch is OFF. Battery voltage OK or NG OK: Replace AFS control unit. Refer to " «REMOVAL AND INSTALLATION OF AFS CONTROL UNIT»(ref-356281-S23046224442010021300000) ". NG: If voltage is approx. 0 V and stays unchanged, GO TO 4. If voltage is battery voltage and stays unchanged, GO TO 6 .
4. CHECK AFS SWITCH POWER SUPPLY CIRCUIT Turn ignition switch OFF. Disconnect AFS switch connector. Turn ignition switch ON. Check voltage between AFS switch harness connector and ground. TERMINAL VOLTAGE REFERENCE Terminals Voltage (Approx.) (+) (-) AFS switch connector Terminal M96 1 Ground Battery voltage OK or NG OK: GO TO 5. NG: Repair harness or connector.
5. CHECK AFS SWITCH CIRCUIT Turn ignition switch OFF. Disconnect AFS control unit connector. Check continuity between AFS switch harness connector (A) and AFS control unit harness connector (B). TERMINAL CONTINUITY REFERENCE A B Continuity Connector Terminal Connector Terminal M96 4 F110 3 Yes OK or NG OK: Check connector for connection, bend and loose fit. NG: Repair harness or connector.
6. CHECK AFS SWITCH CIRCUIT (IGN POWER SUPPLY SHORT CIRCUIT) Turn ignition switch OFF. Disconnect AFS control unit connector and AFS switch connector. Turn ignition switch ON. Check voltage between AFS control unit harness connector and ground. TERMINAL VOLTAGE REFERENCE Terminals Voltage (Approx.) (+) (-) AFS control unit connector Terminal F110 3 Ground Battery voltage OK or NG OK: Replace AFS control unit. Refer to " «REMOVAL AND INSTALLATION OF AFS CONTROL UNIT»(ref-356281-S23046224442010021300000) ". NG: Repair harness or connector.

Scheme 10

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Scheme 12

Scheme 13

Scheme 14

Scheme 15

1. CHECK AIMING MOTOR CONSULT-III ACTIVE TEST Start engine and turn lighting switch to 2ND position. Select "LEVELIZER TEST" of ADAPTIVE LIGHT active test item. Touch "ORIGIN" or "PEAK" screen. Make sure of aiming motor operation. OK or NG OK: Replace AFS control unit. Refer to " «REMOVAL AND INSTALLATION OF AFS CONTROL UNIT»(ref-356281-S23046224442010021300000) ". NG: GO TO 2.
2. CHECK AIMING MOTOR DRIVE SIGNAL CONSULT-III ACTIVE TEST Start engine and turn lighting switch to 2ND position. Select "LEVELIZER TEST" of ADAPTIVE LIGHT active test item. Touch "ORIGIN" or "PEAK" screen. Check voltage between AFS control unit harness connector and ground. TERMINAL VOLTAGE REFERENCE (+) (-) Condition Voltage (Approx.) AFS control unit connector Terminal RH F110 19 Ground ORIGIN 10.6 V PEAK 1.9 V LH 40 ORIGIN 10.6 V PEAK 1.9 V OK or NG OK: GO TO 3. NG: GO TO 6 .
3. CHECK AIMING MOTOR DRIVE SIGNAL CIRCUIT CONSULT-III ACTIVE TEST Turn ignition switch OFF. Disconnect front combination lamp RH and LH connector. Start engine and turn lighting switch to 2ND position. Select "LEVELIZER TEST" of ADAPTIVE LIGHT active test item. Touch "ORIGIN" or "PEAK" screen. Check voltage between front combination lamp (LH and RH) harness connector and ground. TERMINAL VOLTAGE REFERENCE (+) (-) Condition Voltage (Approx.) Front combination lamp connector Terminal RH E70 12 Ground ORIGIN 10.6 V PEAK 1.9 V LH E71 12 ORIGIN 10.6 V PEAK 1.9 V OK or NG OK: GO TO 4. NG: Repair harness or connector.
4. CHECK AIMING MOTOR POWER SUPPLY Turn ignition switch OFF. Turn ignition switch ON. Check voltage between front combination lamp (RH and LH) harness connector and ground. TERMINAL VOLTAGE REFERENCE (+) (-) Voltage (Approx.) Front combination lamp connector Terminal RH E70 13 Ground Battery voltage LH E71 13 OK or NG OK: GO TO 5. NG: Repair harness or connector.
5. CHECK AIMING MOTOR GROUND Turn ignition switch OFF. Check continuity between front combination lamp (RH and LH) harness connector and ground. TERMINAL CONTINUITY REFERENCE Front combination lamp connector Terminal Ground Continuity RH E70 11 Yes LH E71 11 OK or NG OK: Replace front combination lamp RH and LH (aiming motor malfunction). Refer to " «REMOVAL AND INSTALLATION OF FRONT COMBINATION LAMP»(ref-356281-S11892960792010021300000) ". NG: Repair harness or connector.
6. CHECK AIMING MOTOR DRIVE SIGNAL CIRCUIT CONSULT-III ACTIVE TEST Turn ignition switch OFF. Disconnect front combination lamp RH and LH connector. Start engine and turn lighting switch to 2ND position. Select "LEVELIZER TEST" of ADAPTIVE LIGHT active test item. Touch "ORIGIN" or "PEAK" screen. Check voltage between AFS control unit harness connector and ground. TERMINAL VOLTAGE REFERENCE (+) (-) Condition Voltage (Approx.) AFS control unit connector Terminal RH F110 19 Ground ORIGIN 10.6 V PEAK 1.9 V LH 40 ORIGIN 10.6 V PEAK 1.9 V OK or NG OK: Replace front combination lamp RH and LH (aiming motor malfunction). Refer to " «REMOVAL AND INSTALLATION OF FRONT COMBINATION LAMP»(ref-356281-S11892960792010021300000) ". NG: GO TO 7.
7. CHECK AIMING MOTOR DRIVE SIGNAL CIRCUIT Turn ignition switch OFF. Disconnect AFS control unit connector. Check continuity between AFS control unit harness connector (A) and front combination lamp (LH or RH) harness connector (B). TERMINAL CONTINUITY REFERENCE Circuit A B Continuity Connector Terminal Connector Terminal RH F110 19 E70 12 Yes LH 40 E71 12 Check continuity between AFS control unit harness connector (A) and ground. TERMINAL CONTINUITY REFERENCE A Ground Continuity Connector Terminal F110 19 No 40 OK or NG OK: Replace AFS control unit. Refer to " «REMOVAL AND INSTALLATION OF AFS CONTROL UNIT»(ref-356281-S23046224442010021300000) ". NG: Repair harness or connector.

The control of the fog lamps is dependent upon the position of the combination switch (lighting switch). The lighting switch must be in the 2ND position or AUTO position (headlamp is ON) for front fog lamp operation. When the lighting switch is placed in fog lamp position, the BCM (body control module) receives input signal requesting the fog lamps to illuminate. When the headlamps are illuminated, 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 front fog lamp relay coil. When activated, this relay directs power to the front fog lamps.

FOG LAMP OPERATION

The fog lamp switch is built in combination switch. The lighting switch must be in 2ND position or AUTO position (headlamp is ON) and fog lamp switch must be ON for fog lamp operation.

With the fog lamp switch in the ON position, the CPU located in IPDM E/R grounds coil side of the fog lamp relay. Fog lamp relay then directs power

1. through IPDM E/R terminal 37
2. to front fog lamp RH terminal 1
3. through IPDM E/R terminal 36
4. to front fog lamp LH terminal 1.

Ground is supplied

1. to front fog lamp RH terminal 2
2. through grounds E22 and E43
3. to front fog lamp LH terminal 2
4. through grounds E22 and E43.

With power and grounds supplied, the front fog lamps illuminate.

The unified meter and A/C amp. that received the front fog lamp request signal by BCM across the CAN communication makes a front fog lamp indicator lamp turn on in combination meter.

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.

TURN SIGNAL OPERATION

With the ignition switch is in the ON or START position, power is supplied

1. through 15A fuse [No. 1, located in fuse block (J/B)]
2. to BCM (body control module) terminal 38
3. through 10A fuse [No. 14, located in fuse block (J/B)]
4. to combination meter terminal 12
5. through 10A fuse [No. 12, located in fuse block (J/B)]
6. to unified meter and A/C amp. terminal 53.

Ground is supplied

1. to BCM terminal 52
2. to combination meter terminals 9, 10 and 11
3. to unified meter and A/C amp. terminals 55 and 71
4. through grounds M16 and M70.

LH Turn Signal Lamp

When turn signal switch is moved to left position, BCM receives input signal requesting left turn signals to flash. BCM then supplies power

1. through BCM terminal 45
2. to front combination lamp LH (turn signal) terminal 10
3. to side turn signal lamp LH terminal 1, and
4. to rear combination lamp LH (turn signal) terminal 3.

Ground is supplied

1. to front combination lamp LH (turn signal) terminal 9
2. to side turn signal lamp LH terminal 2
3. through grounds E22 and E43
4. to rear combination lamp LH (turn signal) terminal 4
5. through grounds B5, B40 and B131.

The BCM also supplies input to unified meter and A/C amp. terminals 56 and 72 across the CAN communication lines.

The unified meter and A/C amp. which received the turn indicator signal makes the left turn signal indicator turn on in combination meter.

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

RH Turn Signal Lamp

When turn signal switch is moved to right position, BCM receives input signal requesting right turn signals to flash. BCM then supplies power

1. through BCM terminal 46
2. to front combination lamp RH (turn signal) terminal 10
3. to side turn signal lamp RH terminal 1, and
4. to rear combination lamp RH (turn signal) terminal 3.

Ground is supplied

1. to front combination lamp RH (turn signal) terminal 9
2. to side turn signal lamp RH terminal 2
3. through grounds E22 and E43
4. to rear combination lamp RH (turn signal) terminal 4
5. through grounds B5, B40 and B131.

The BCM also supplies input to unified meter and A/C amp. terminals 56 and 72 across the CAN communication lines.

The unified meter and A/C amp. which received the turn indicator signal makes the right turn signal indicator turn on in combination meter.

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

HAZARD LAMP OPERATION

Power is supplied at all times

1. through 50A fusible link (letter F, located in fuse, fusible link and relay block)
2. to BCM terminal 55
3. through 10A fuse [No. 21, located in fuse block (J/B)]
4. to BCM terminal 42
5. to combination meter terminal 23
6. through 10A fuse [No. 19, located in fuse block (J/B)]
7. to unified meter and A/C amp. terminal 54.

When the hazard switch is depressed, ground is supplied

1. to BCM terminal 29
2. through multifunction switch terminal 6.

Ground is supplied

1. to multifunction switch terminal 14
2. to BCM terminal 52
3. to combination meter terminals 9, 10 and 11
4. to unified meter and A/C amp. terminals 55 and 71
5. through grounds M16 and M70.

BCM then supplies power

1. through BCM terminal 45
2. to front combination lamp LH (turn signal) terminal 10
3. to side turn signal lamp LH terminal 1
4. to rear combination lamp LH (turn signal) terminal 3
5. through BCM terminal 46
6. to front combination lamp RH (turn signal) terminal 10
7. to side turn signal lamp RH terminal 1
8. to rear combination lamp RH (turn signal) terminal 3.

Ground is supplied

1. to front combination lamp LH (turn signal) terminal 9
2. to front combination lamp RH (turn signal) terminal 9
3. to side turn signal lamp LH terminal 2
4. to side turn signal lamp RH terminal 2
5. through grounds E22 and E43
6. to rear combination lamp LH (turn signal) terminal 4
7. to rear combination lamp RH (turn signal) terminal 4
8. through grounds B5, B40 and B131.

The BCM also supplies input to unified meter and A/C amp. terminals 56 and 72 across the CAN communication lines.

The unified meter and A/C amp. which received the turn indicator signal makes the left and right turn signal indicator turn on in combination meter.

With power and input supplied, the BCM controls the flashing of the hazard warning lamps.

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.

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.

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

1. through IPDM E/R terminal 21
2. to front combination lamp LH and RH terminals 5 (parking)
3. to front combination lamp LH and RH terminals 7 (side marker)
4. to rear combination lamp LH and RH terminals 1 (tail and side marker)
5. to license plate lamp LH and RH terminals 1.

Ground is supplied at all times

1. to front combination lamp LH and RH terminals 1 (parking and side marker)
2. through grounds E22 and E43
3. to rear combination lamp LH and RH terminals 4 (tail and side marker)
4. through grounds B5, B40 and B131.
5. to license plate lamp LH and RH terminals 2
6. 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.

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.

BCM (body control module) controls interior lamp, room lamp timer and interior lamp battery saver. The following signals are input to BCM

1. Door lock/unlock trunk open request signal from the Intelligent Key unit via CAN communication
2. Key cylinder switch status signal from power window main switch via power window serial link
3. Door switch signal from door switches (driver side, passenger side, rear LH and RH)
4. IGN power supply (signal) from PDU (power distribution unit)
5. ACC power supply (signal) from PDU

ROOM LAMP TIMER BASIC OPERATION

Applicable lamps

1. Room lamp system: map lamp, foot lamp (driver side and passenger side) and personal lamp (rear LH and rear RH).

1. When getting on the vehicle Lamps illuminate by timer operation when driver side door or passenger side door is unlocked.* Lamps illuminate by timer operation after any door is open and then all doors are closed.* Timer operation stops and lamps are OFF, when driver side door is locked or the push-button ignition switch (push switch) is turned to ACC or ON from OFF. *: This setting can be changed by CONSULT-III. Refer to " «CONSULT-III FUNCTIONS (BCM - INT LAMP)»(ref-356281-S00427217432010021300000) ".
2. When getting off the vehicle Lamps illuminate by timer operation when the push-button ignition switch (push switch) is turned OFF.* Lamps illuminate by timer operation after any door is open and then all doors are closed.* Timer operation stops and lamps are OFF, when driver side door is locked. *: This setting can be changed by CONSULT-III. Refer to " «CONSULT-III FUNCTIONS (BCM - INT LAMP)»(ref-356281-S00427217432010021300000) ".

SWITCH OPERATION

When any front door switch is ON (door is opened), ground is supplied

1. to step lamp (driver side, passenger side, rear LH and RH) terminals 2
2. to kicking plate illumination (driver side and passenger side) terminals 2
3. through BCM terminal 47.

And power is supplied

1. through BCM terminal 41
2. to step lamp (driver side, passenger side, rear LH and RH) terminals 1
3. to kicking plate illumination (driver side and passenger side) terminals 1.

When any door switch is ON (door is opened) and personal lamp and map lamp is DOOR position, ground is supplied

1. to personal lamp LH and RH terminal 1
2. to map lamp terminals 2 and 5
3. through BCM terminal 48.

And power is supplied

1. through BCM terminal 41
2. to personal lamp LH and RH terminals 3
3. to map lamp terminal 3.

When map lamp switch is ON, ground is supplied

1. to map lamp terminal 1
2. through grounds M16 and M70.

And power is supplied

1. through BCM terminal 41
2. to map lamp terminal 3.

When personal lamp LH and RH switch is ON, ground is supplied

1. to personal lamp LH and RH terminals 2
2. through grounds M16 and M70.

And power is supplied

1. through BCM terminal 41
2. to personal lamp LH and RH terminals 3.

When trunk lid lock assembly (trunk room lamp switch) is ON, ground is supplied

1. to trunk room lamp (upper and lower) terminals 2
2. through trunk lid lock assembly (trunk room lamp switch) terminals 1 and 2
3. through grounds B405 and B402.

And power is supplied

1. through BCM terminal 41
2. to trunk room lamp (upper and lower) terminals 1.

When vanity mirror lamp LH and RH switch is ON, ground is supplied

1. to vanity mirror lamp LH and RH terminals 2
2. through grounds M16 and M70.

And power is supplied

1. through BCM terminal 41
2. to vanity mirror lamp (LH and RH) terminals 1.

ROOM LAMP TIMER OPERATION

BCM controls applicable lamps to illuminate for 15 seconds (can be set maximum 30 seconds) by timer operation under following conditions. BCM also controls applicable lamps to brighten for 1 second (can be set maximum 5 seconds) when turned ON, or to dim for 3 seconds (can be set maximum 5 seconds) when turned OFF. (Timer operating time and dimming/brightening time can be changed with CONSULT-III. Refer to " CONSULT-III FUNCTIONS (BCM - INT LAMP) ".) This control operates as follows.

Applicable lamps

1. Room lamp system: map lamp, foot lamp (driver side and passenger side) and personal lamp (rear LH and rear RH).

BCM controls room lamp timer operation under following condition.

1. Condition 1: Door lock state changes.*

BCM judges as the door lock is unlocked under either case below.

1. The Intelligent Key unit sends door lock/unlock trunk open request signal (driver side unlock or passenger side unlock) to BCM through CAN communication line by unlock operation of intelligent key, outside key antenna and front door request switch (driver side) or outside key antenna and front door request switch (passenger side).
2. Key cylinder switch state (unlock) signal is sent to BCM through power window serial link when front door lock assembly (driver side) (key cylinder switch) is unlocked (ON) by power window main switch unlock operation.

And fulfills all the conditions below.

1. The engine switch (push switch) is OFF.
2. All the doors are closed.

*: This setting can be changed by CONSULT-III. Refer to " CONSULT-III FUNCTIONS (BCM - INT LAMP) ".

1. Condition 2: Any door switch state changes.*

The BCM terminal value of operated door switch is changed when any door is opened and then closed. From that BCM judges as the door is opened and then closed.

And fulfills all the conditions below.

1. The engine switch (push switch) is OFF.
2. All the doors are closed.

*: This setting can be changed by CONSULT-III. Refer to " CONSULT-III FUNCTIONS (BCM - INT LAMP) ".

1. Condition 3: Engine switch (push switch) state changes.*

The Intelligent Key unit judges as the engine switch (push switch) is OFF and sends push-button ignition switch (push switch) signal to PDU (power distribution unit) when push-button ignition switch (push switch) turned OFF. Then PDU (power distribution unit) turns OFF, IGN power supply and ACC power supply.

And fulfills the conditions below.

1. All the doors are closed.

*:This setting can be changed by CONSULT-III. Refer to " CONSULT-III FUNCTIONS (BCM - INT LAMP) ".

Note. When timer operation signal is input during former timer operation, BCM goes for latter timer operation.

Scheme 16

ROOM LAMP TIMER INAPPLICABLE LAMPS OPERATION

1. Step lamp system: step lamp (driver side, passenger side, rear LH and rear RH) and kicking plate illumination (driver side and passenger side). Step lamp system lamps are ON/OFF linked with any door (driver side, passenger side, rear LH and rear RH) opened and then closed.
2. Vanity mirror lamp LH and RH. Operated side vanity mirror lamp is ON/OFF linked with vanity mirror opened and then closed.
3. Trunk room lamp (lower) and trunk room lamp (upper). Trunk room lamps (lower and upper) are ON/OFF linked with trunk opened and then closed.

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) 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.

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 located in the IPDM E/R controls the tail lamp relay coil, which, when energized, directs power

1. through IPDM E/R terminal 21
2. to combination meter terminal 13
3. to LDW switch (illumination) terminal 5 (with lane departure prevention)
4. to VDC off switch (illumination) terminal 3
5. to trunk lid opener switch (illumination) terminal 3
6. to combination switch (spiral cable) terminal 25
7. to door mirror remote control switch (illumination) terminal 16
8. to AFS switch (illumination) terminal 5 (with AFS)
9. to rear sunshade front switch (illumination) terminal 5 (with rear control switch)
10. to A/T illumination terminal 1
11. to snow mode switch (illumination) terminal 5 (AWD models)
12. to rear control cancel switch (illumination) terminal 4 (with rear control switch)
13. to clock terminal 3
14. to multifunction switch terminal 3
15. to DVD player terminal 18 (with DVD player)
16. to AV control unit terminal 9
17. to climate controlled seat switch driver side (illumination) terminal 7
18. to climate controlled seat switch passenger side (illumination) terminal 7
19. to ashtray illumination (rear LH) terminal 1
20. to ashtray illumination (rear RH) terminal 1
21. to illumination control switch terminal 1
22. to cigarette lighter socket (illumination) terminal 2
23. to map lamp (illumination) terminal 8
24. to power window main switch illumination terminal 1
25. to glove box lamp terminal 1
26. to rear control switch terminal 2 (with rear control switch)
27. to rear power seat switch RH (illumination) terminal 4 (with rear control switch)
28. to rear heated seat switch RH (illumination) terminal 7 (with rear control switch)
29. to rear sunshade cancel relay terminal 6 (with rear control switch)
30. to automatic return cancel switch (illumination) terminal 4 (with rear control switch)
31. to rear power seat switch LH (illumination) terminal 4 (with rear control switch) and
32. to rear heated seat switch LH (illumination) terminal 7 (with rear control switch)
33. through Intelligent Key unit terminal 64
34. to push button ignition switch (illumination) terminal 3.

Ground is supplied

1. to combination meter terminal 9, 10 and 11
2. through grounds M16 and M70
3. to combination meter terminal 14
4. to push button ignition switch (illumination) terminal 2
5. to LDW switch (illumination) terminal 4 (with lane departure prevention)
6. to VDC off switch (illumination) terminal 4
7. to trunk lid opener switch (illumination) terminal 4
8. to combination switch (spiral cable) terminal 24
9. to door mirror remote control switch (illumination) terminal 15
10. to AFS switch (illumination) terminal 6 (with AFS)
11. to rear sunshade front switch (illumination) terminal 6 (with rear control switch)
12. to A/T illumination terminal 2
13. to snow mode switch (illumination) terminal 6 (AWD models)
14. to rear control cancel switch (illumination) terminal 5 (with rear control switch)
15. to clock terminal 4
16. to multifunction switch terminal 4
17. to AV control unit terminal 8 (with navigation system)
18. to AV control unit terminal 18 (without navigation system)
19. to climate controlled seat switch driver side (illumination) terminal 8 and
20. to climate controlled seat switch passenger side (illumination) terminal 8
21. through illumination control switch terminal 2
22. to illumination control switch terminal 3
23. through grounds M16 and M70
24. to DVD player terminal 17 (with DVD player)
25. through grounds M16 and M70
26. to cigarette lighter socket (illumination) terminal 1
27. to map lamp (illumination) terminal 4
28. to power window main switch illumination terminal 2 and
29. to glove box lamp terminal 2
30. through grounds M16 and M70
31. to ashtray illumination (rear RH) terminal 2
32. through grounds B402, B405
33. to ashtray illumination (rear LH) terminal 2
34. through grounds B5, B40 and B131
35. to automatic return cancel switch (illumination) terminal 2 (with rear control switch)
36. to rear power seat switch LH (illumination) terminal 3 (with rear control switch)
37. to rear heated seat switch LH (illumination) terminal 8 (with rear control switch)
38. through grounds B5, B40 and B131
39. to rear sunshade cancel relay terminal 7(with rear control switch)
40. to rear sunshade rear switch (illumination) terminal 5 (with rear control switch)
41. to rear control switch terminal 4 (with rear control switch)
42. through grounds B5, B40, B131 and B559.
43. to rear power seat switch RH (illumination) terminal 3 (with rear control switch)
44. to rear heated seat switch RH (illumination) terminal 8 (with rear control switch)
45. through grounds B5, B40, B131 and B559.

With power and ground supplied, illumination lamps illuminate.

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.

See also:
• SYSTEM DESCRIPTION
• CHECK DOOR SWITCH
• CONSULT-III FUNCTION (TRANSMISSION)
• EXPLODED VIEW