Body Control Systems: Description and Operation
ETACS (ELECTRONIC TIME AND ALARM CONTROL SYSTEM)BODY CONTROL MODULE
DESCRIPTION
Body control module (A) receives various input switch signals controlling time and alarm functions for tail lamp, rear fog lamp, tail lamp auto cut, auto light, DRL, seat belt reminder warning, key operated warning, parking brake warning, over speed warning, ignition key hole illumination, room lamp control, power window delay time control, keyless entry control, burglar alarm control, auto door lock/crash door unlock, key reminder & front (rear heated control.
BCM BLOCK DIAGRAM
BCM Block Diagram:
OPERATION
1. WASHER INTERLOCKING WIPER
1. If the Washer SW is ON in the IGN2 SW ON state, then the Wiper output shall be ON after T1, and if the Washer SW input is ON for 0.2 - 0.6 seconds, then the Wiper output shall be OFF after T3. However, WASHER SW input shall be disregarded during the Washer Wiper operating, but after operating the Washer Wiper, WASHER SW input shall be accepted first.
2. If the Washer SW is ON in the IGN2 SW ON state, then the Wiper output shall be ON after T1, and if the Washer SW is ON over 0.6 seconds, after the Washer SW is OFF and the Wiper output shall be ON for 2.5 - 3.8 seconds and then, the Wiper output shall be OFF However, WASHER SW input shall be disregarded during the Washer Wiper operating, but after the Washer Wiper operating, WASHER SW input be accepted first.
3. During INT Wiper operating, if the Washer SW is ON over 0.6 seconds, then the Washer Interlocking Wiper output shall be ON. If the Washer SW is ON for 0.2 - 0.6 seconds, then the Wiper output shall be ON once.
2. MIST INTERLOCKING WIPER
1. In IGN2 SW ON, if the MIST SW is ON for 60 ms or more, within 100 ms, and then, wiper output shall be ON for 700 ms within 100 ms.
2. If MIST SW input is continued, WIPER output shall be maintain the ON state, and then it MIST SW is OFF, the Wiper output shall be ON for 700 ms since OFF time.
3. Mist SW input shall be disregarded by INT WIPER, WASHER interlocking WIPER during operating WIPER.
3. HEADLAMP WASHER
1. In the state that IGN2 SW is ON and HEADLAMP is ON, if the headlamp washer SW is ON, the headlamp washer relay shall be ON.
2. After the operation by inputting the operation condition, the output shall be inhibited by disregarding the input condition occurred for 10 seconds.
4. VEHICLE SPEED (SENSITIVE TYPE) INT WIPER
According to the vehicle speed, control intermittent time of the Intermittent Wiper.
- IGN1 SW ON state
- WIPER SW INT State
- INPUT the vehicle speed, intermittent time set VOLUME value
- Change the WIPER by calculating the intermittent time according to the vehicle speed.
1. Input of Vehicle speed
Calculate the vehicle speed by the number of Input PULSE for 1 second.
1 [PULSE/sec] = (60 [Km/h] x 60 [sec) 1 (637 x 4 PULSE) = 1.41 [Km/h]
2. Output of Vehicle speed
Count the number of the PULSE for 1 second, and compare with the former value, and then define the higher value of the vehicle speeds as the vehicle speed for intermittent time output.
V = max (Vnew, Vold)
But, Vnew: the present vehicle speed, vold: the former vehicle speed
3. Output of Intermittent time ratio (vehicle speed: 0 Km/h)
Calculate the INT time rate by inputting the INT Time set Volume value (input voltage) The INT Time Rate is to indicate the position where the Volume is located from the Slow (100%) to the Fast (0%) of the Knob. Therefore the Volume shall be linearly calibrated about the input voltage.
4. Output of Standard Intermittent Time Calculate the intermittent time of the intermittent time ratio 100% and 0% at the vehicle speed (V) computed above by linear correction and then, calculate the standard intermittent time by the proportional distribution of the intermittent time ratio computed in (3) item.
- If the variation of the standard intermittent time is less than 0.3 sec, should not renew the intermittent time.
- If the standard intermittent time is less than 0.2 sec, continually operate.
- When the INT Time Timer (passed time) is over 10 seconds, if the vehicle is speeded up (from 0 km/h to 7 km/h and more), then the Wiper shall be operated.
5. TAIL LAMP AUTO CUT
After Key IN SW is On, if Tail SW is On, then Key IN SW shall be OFF; when the driver's door is opened, then the Tail Lamp shall be OFF automatically. Also, in the state that the KEY IN SW is ON, after the driver's door is opened, if the KEY IN SW is OFF then the Tail Lamp shall be OFF automatically. After the Auto Cut, if the Tail SW is ON after OFF again, the Tail Lamp shall be ON, and the Auto Cut function shall be canceled.
After the Auto Cut, when KEY IN SW is ON again, TAIL LAMP shall be ON, and the Auto Cut function shall be canceled.
In the state of the AUTO CUT; if mounting or removing the BATTERY, then the AUTO CUT state shall be continued.
6. HEAD LAMP LOW CONTROL
If HEAD LAMP LOW SW is On in the IGN1 On state, HEAD LAMP HIGH RELAY shall be ON so that HEAD LAMP HIGH can be controlled by HEAD LAMP RELAY and MIF SW.
7. AUTO LIGHT CONTROL
1. It shall be able to operate only in case of AUTO LIGHT is active, and comply with CALIBRATION PARAMETER TABLE of each spec.
2. In GN1 SW ON state, if the supply voltage of the AUTO LIGHT SENSOR is less than 4 V or more than 6 V, it is determined as the fault. In the fault state, in case of the AUTO LIGHT SW is ON, always HEAD LAMP RELAY shall be ON regardless of the Sensor value. FILTERING TIME for the fault and recovery with regard to the supply voltage is 300 msec respectively.
3. In the condition of LIGHT ON, when the AUTO LIGHT SENSOR value is entered into AUTO LIGHT control condition, then LIGHT shall be ON immediately.
4. If IGN1 SW is ON, and AUTO LIGHT SW is ON, and in LIGHT OFF state, and in case of AUTO LIGHT SENSOR value is the input value of the LIGHT ON, LIGHT shall be ON after 2.5 ± 0.2 sec.
5. In LIGHT ON state, in case of the AUTO LIGHT SENSOR value is the input value of the LIGHT OFF LIGHT shall be OFF after 2.5 ± 0.2 sec.
6. If the SENSOR value is the input value of the TAIL LAMP ON, then TAIL LAMP RELAY shall be ON only, and if it is the input value of the HEAD LAMP ON, then HEAD LAMP HIGH RELAY shall be ON so that HEAD LAMP HIGH can be controlled by TAIL LAMP RELAY HEAD LAMP RELAY, and multifunction (MIF) SW.
7. In the condition of LIGHT ON, when AUTO LIGHT SW is ON, HEAD LAMP RELAY shall be ON immediately, and when AUTO LIGHT SW is OFF LIGHT shall be OFF immediately.
The LIGHT ON value of the AUTO LIGHT SENSOR shall be complied with the table below.
8. The time chart according to filtering time and sensor for each applicable area shall be as follow.
8. DAYTIME RUNNING LIGHT
DRL (DAYTIME RUNNING LIGHT) OPTION is classified into the following two cases by the DRL OPTION LINE input.
1. NON-DRL OPTION: In the case that DRL OPTION LINE is not connected.
2. DRL OPTION: In the case that DRL CANADA OPTION LINE is connected and electrically grounded.
9. DRL (CANADA)
If the IGN2 is ALT "L" are On, supply the power to the HEAD LAMP HIGH LAMP by turning the DRL CANADA RELAY ON.
If HEAD LAMP LOW RELAY is On by the HEAD LAMP switch, the DRL function shall be canceled. If the HEAD LAMP HIGH RELAY is On by the HEADLAMP HIGH switch or PASSING switch, the DRL function shall be canceled.
If P/BRAKE switch is ON (PARK), the DRL function shall be canceled.
In IGN2 state, if the HEAD LAMP HIGH RELAY is On by the HEADLAMP HIGH switch or PASSING switch, the HEAD LAMP HIGH INDICATOR shall be ON.
10. BUZZER SOUND
1. BUZZER SOUND SPECIFICATION
2. The Priority Order: OVER SPEED WARNING > S/BELT WARNING > KEY OPERATED WARNING > PARKING START WARNING
3. If the output is OFF, maintain the output until the OFF cycle
4. Sound pressure measurement distance: 1.0 m
11. SEAT BELT REMINDER
Part 1:
Part 2:
Part 3:
12. KEY OPERATED WARNING
1. In state of KEY IN SW is IN, if the DRIVER DOOR is opened, then the CHIME BUZZER output shall be continued with the cycle of 0.7 seconds.
2. If KEY IN SW is OUT or the driver's door is closed during the Chime Buzzer output, then the output shall be OFF
13. PARKING START WARNING
In the state that the IGN1 is ON or the Parking Brake is pulled, if the speed of vehicle is maintained over 10 km/h for 2 - 3 seconds or more, then the Chime Buzzer output shall be continued with 1 second cycle of the ON/OFF (0.3/0.7 seconds). But, after the speed of vehicle is maintained over 10 km/h for 2 - 3 seconds or more, if the Parking Brake is pulled, output immediately.
14. IGN KEY HOLE ILLUMINATION
1. If the driver's door (or assist' 5 door) is opened in the state that the IGN1 SW is OFF; then the IGN Key Hole Illumination shall be ON.
2. In the (1) state, if the driver's door (or assist's door) is closed, then the IGN Key Hole Illumination shall be OFF after it is in the ON state for 30 seconds.
3. During the (1) and (2) operating, if the IGN1 SW is On, the IGN Key Hole Illumination shall be OFF immediately.
4. But, if it is in the ARM Mode, then the IGN Key Hole Illumination shall be OFF immediately.
15. DEFOGGER TIMER
1. If the Defogger SW is ON after the ALT "L" is ON in the state that the IGN1 SW is ON, then the Defogger output shall be ON for 20 minutes. (Operating in the state of the ENGINE RUNNING)
2. If the DEFOGGER SW is ON again while the DEFOGGER output is ON, then the DEFOGGER output shall be OFF.
3. If the ALT "L" is OFF or IGN1 is OFF while the DEFOGGER output is ON, then the DEFOGGER output shall be OFF.
4. If the ALT "L" > 10 volts, then it shall be in the Engine Running State (ALT "L" shall be ON); if the ALT "L" < 5 volts, then it shall be in the Engine Stop State (ALT "L" shall be OFF). Also, if the ALT "L" is more than 5 and less than 10 volts, then the former state shall be maintained.
5. If the defogger SW is pressed and the ALT "L" is ON, there shall be no the DEFOGGER RLY output.
16. DELAY ROOM LAMP & KEYLESS UNLOCK TIMER
Part 1:
Part 2:
Part 3:
Part 4:
Part 5:
NOTE:
1. When the IGN1 is ON, there shall be no blinking of the ROOM LAMP
2. The decaying of the ROOM LAMP should be more than 32 steps.
17. POWER WINDOW TIMER
1. When the IGN2 SW is ON, then the Power Window Relay output shall be ON.
2. When the IGN2 SW is OFF then the Power Window output shall be OFF after the output is maintained ON for 30 seconds.
3. Maintained ON for 30 seconds.
4. In the condition of the above (2), if the driver's or assist's door is opened, then the output shall be OFF immediately.
5. In the state that the driver's or assist's door is opened, if the IGN is OFF, then the Power Window output shall be OFF.
6. The SAFETY POWER WINDOW ECU Output- port shall be controlled the same as the POWER WINDOW RELAY does.
18. DOOR LOCK/UNLOCK RELAY CONTROL
1. 2-TURN UNLOCK SPECIFICATION
19. CENTRAL DOOR LOCK/UNLOCK
1. After the drivers door key lock SW is on, if the drivers door ACTUATOR UNLOCK SW changes from UNLOCK to LOCK within 3 s, ALL DOOR LOCK output shall be ON for Ti. But, in case of KEY IN and IGN1 SW ON, output shall be inhibited.
2. After the drivers door key unlock SW is on, if the driver's door ACTUATOR UNLOCK SW changes from LOCK to UNLOCK within 3 s, ALL DOOR UNLOCK output shall be ON for T1.
3. When the TX (Transmitter)) LOCK signal is received, all DOOR LOCK output shall be ON for T1.
4. When the TX UNLOCK signal is received, all DOOR UNLOCK output shall be ON for T1.
5. If the Door LOCK Switch (Power window) is locked , all DOOR LOCK output shall be ON for T1.
6. If the Door UNLOCK Switch (Power window) is unlocked, all DOOR UNLOCK output shall be ON for T1 .But, in ARM state, the operation by POWER WINDOW UNLOCK Switch shall be inhibited.
7. The LOCK/UNLOCK by the SAFETY KNOB is non-interlocking. (Mechanical operation)
8. When connected to the BATTERY there shall be no malfunction. (there shall be no malfunction in the KEY IN position)
9. Don't receive the input with less than 60 msec (KEY LOCK/UNLOCK SW).
10. During output, if there are the output request, the current output shall be OFF immediately, and after 100 ms delay, and then, perform the reverse direction output. But, if there are the output request during 100 ms delay, perform the output for the last output request occurred.
11. In case of the Lock output and Unlock output condition are occurred at the same tine, perform the lock output and disregard the unlock output.
12. In case of all DOOR UNLOCK (UNLOCK) Switch is LOCK (UNLOCK) state, the LOCK (UNLOCK) request in power window always output does not output.
13. In case of DRIVER DOOR UNLOCK Switch is UNLOCK state, the request of DRIVER DOOR UNLOCK does not output.
14. During DRIVER DOOR UNLOCK output, in case of the output request of ALL DOOR UNLOCK, perform DRIVER DOOR UNLOCK output according to ALL DOOR UNLOCK output.
20. TURN UNLOCK
1. IF DRIVER KEY UNLOCK SW is OFF > ON (DRIVER DOOR LOCK SW is UNLOCK mechanically and BCM doesn't output) and then the Driver's ACTUATOR UNLOCK SW is LOCK> UNLOCK within 0.5 s and Driver key unlock SW is OFF > ON within Ti, all door unlock output shall be ON for T2.
2. IF DRIVER KEY UNLOCK SW is OFF > ON (DRIVER DOOR LOCK SW is UNLOCK mechanically and BCM doesn't output) and then the Driver's ACTUATOR UNLOCK SW is LOCK> UNLOCK within 0.5 s and receives TX UNLOCK within T1, the UNLOCK output shall be ON to all doors for T2.
3. When the TX UNLOCK signal is received, the DRIVER DOOR UNLOCK output shall be ON for T2. But, if the TX UNLOCK signal is received within T1, the UNLOCK output shall be ON to all doors for T2.
4. If after the TX UNLOCK signal is received, the DRIVER KEY UNLOCK SW is turned to ON from OFF within Ti, the UNLOCK output shall be ON to all doors for T2.
5. Even if other registered TX signal within T1 is received, the signal shall regard as the same TX signal.
6. The DOOR LOCK (UNLOCK) output produced by the change of the DRIVER DOOR LOCK SW (KNOB) shall be not output.
21. IGN KEY REMINDER
1. If the Vehicle speed is over 3 Km/h, then this function doesn't act on.
2. If KEY IN Switch is IN & the driver's door is opened & the driver's DOOR UNLOCK Switch is locked, then after 0.5 seconds, the unlock signal shall be output to the drivers door for is.
3. If it is in state of that KEY IN SW is IN & assist's DOOR is OPEN & assist's DOOR UNLOCK SW is LOCK, and after 0.5 s, and then perform the ALL DOOR UNLOCK output for 1 second.
4. When (2) items are met at the same time, after 0.5 seconds, the unlock signal shall be output to all doors for 1 second in conformity with (3) item.
5. Although the unlock signal is output for 1 s by the (2) items, if the lock state is maintained, the unlock signal shall be output at maximum three times (except for is output). (is cycle: 0.5 s ON/OFF)
6. After perform (5) items, in case of LOCK state is maintained, and in case of DOOR CLOSE, and then attempt the ALL DOOR UNLOCK one time.
7. In the KEY IN Switch is IN state, if the driver's door is closed within 0.5 seconds as soon as the driver's DOOR UNLOCK SW is turned to the LOCK from the UNLOCK, the unlock signal shall be output to the driver's door for 1 s one time.
8. In the KEY IN Switch is IN state, if the driver's door is closed within 0.5 seconds as soon as the driver's DOOR UNLOCK Switch is turned to the LOCK from the UNLOCK, and after output DEAD UNLOCK for 0.5 s and 20 msec, and then, the unlock signal output shall be ON to all doors for 1 s one time.
9. In the KEY IN Switch is IN state, if the assist's door is closed within 0.5 seconds as soon as the assist's DOOR UNLOCK Switch is turned to the LOCK from the UNLOCK, the unlock signal shall be output to all doors for 1 s one time.
10. In the KEY IN Switch is IN state, if the driver's DOOR UNLOCK Switch is turned to the LOCK from the UNLOCK within 0.5 seconds as soon as the driver' 5 door is turned to the closed state from the opened state, then the Unlock signal shall be output to the driver's door for 1 second one time.
11. In the KEY IN Switch is IN state, if the assist's DOOR UNLOCK Switch is turned to the LOCK from the UNLOCK within 0.5 seconds as soon as the assist's door is turned to the closed state from the opened state, then the Unlock signal shall be output to all doors for 1 second one time.
12. In the KEY IN state, after the DRIVER DOOR or ASSIST DOOR are opened, if the doors are locked by the Power window LOCK Switch, the unlock signal shall be output to all doors.
13. To determine whether the RETRY signal is output or not performs at the beginning time of the RETRY output. (After 1.5 seconds from the first UNLOCK output)
14. Even if the condition is not maintained for 0.5 s after the UNLOCK condition is satisfied, the unlock signal shall be output. But, after the condition is satisfied as the result that the DOOR LOCK Switch is turned to the LOCK from the UNLOCK, if the KEY IN Switch is OFF at the passage time of 0.5 s, the unlock signal shall not be output.
22. CRASH DOOR UNLOCK
1. In the IGN SW ON state, whenever the AIR BAG signal is received, the unlock signal shall be output always.
2. During the unlock output, even if the IGN SW is turned to the OFF from the ON, the unlock output is maintained for the remained time.
3. If the air bag signal is received first and then, the IGN SW is turned to the ON from the OFF, the unlock signal shall not be output.
4. After the UNLOCK output, if the DRIVER or ASSIST, REAR DOOR LOCK SW are turned to the LOCK from the UNLOCK, the unlock signal shall be output for T3.
5. The AUTO DOOR LOCK function is not performed in the CRASH UNLOCK condition.
6. The CENTRAL DOOR LOCK function is not performed during the CRASH UNLOCK output or after it. But, after the IGN is OFF if the crash unlock function is reset, the CENTRAL DOOR LOCK function is normally performed.
7. The CRASH DOOR UNLOCK function is prior to the LOCK/UNLOCK control by the other functions.
8. The LOCK/UNLOCK requirement by the other functions is disregarded during the CRASH DOOR UNLOCK output or after it. But, if the IGN1 SW is OFF and IGN2 SW is OFF, the LOCK/UNLOCK control by the other functions shall be performed.
23. AUTO DOOR LOCK
1. The function of the AUTO DOOR LOCK shall be operated in case of the AUTO DOOR LOCK is active only.
2. In case of the vehicle speed set in the state of that IGN1 SW is ON than the standard is maintained for 2 - 3 seconds, perform the LOCK output. But, if the all DOOR is LOCK state, or all DOOR is FAIL, do not perform the LOCK output.
3. After the lock output of the (1) item, if any one of all doors is unlocked, the lock signal shall be output at maxim three times. (is cycle) But, during the 3-output operating, if the door state is turned to the LOCK from the UNLOCK, disregard it.
4. After the 3-output operating, if a door is Unlocked, the door equivalent for the UNLOCK state shall be treated as FAIL.
5. After the door treated as Fail is turned to the LOCK from the UNLOCK, and then if the door is unlocked, the lock signal shall be output once.
6. After the LOCK output of (2) item, if the locked door is unlocked, the lock signal shall be output once.
7. But, after the LOCK output, even if the unlock state is maintained, the lock signal shall be output to the door (the unlock state) once.
8. When the IGN SW is OFF, the door treated as Fail performs the CLEAR function.
9. The AUTO DOOR LOCK function is not performed in the CRASH UNLOCK condition.
24. 3KM SIGNAL OUTPUT CONTROL
If the vehicle speed is maintained at more than 3 km/h for 2 - 3 seconds in the IGN1 ON state, the signal of 3 KM Output-port shall be ON.
