PAS(Parking Assist System) is an electronic driving aid
device warning driver to be cautious when they park or speed low after
detecting an object on side and behind of vehicle by using the feature
of ultrasonic waves.
PAS consists of four PS sensors which are detecting the
obstacles and transmit the result separated into three warning levels,
the first, second and third to BCM by Lin communication.BCM decides the
alarm level by the transmitted communication message from the slave
sensors, then operate the buzzer or transmits the data for display.
System Operation Specification.
1.
INIT mode
(1)
System initializing time is 500ms after IGN1+ R Gear.
(2)
PAS recognizes LID and sets the sensor ID up during initialization.
(3)
PAS activates each sensor and then executes the diagnosis after finishing initialization of BCM
(4)
PAS Starting buzzer” is normally worked, when sensor does not send an error message and after finishing error diagnosis.
(5)
If any failure is received from the any sensors, PAS Starting
Buzzer” does not work but the failure alarm is operated for a moment.
If you have display option, warning sign is also shown on it.
(6)
Buzzer for sensor failure is operated once, but display is shown continuously until it is repaired completely.
2.
NORMAL Mode
(1)
Lin communication starts and keeps the routine after IGN1 ON+R gear
(2)
BCM send a message once to each sensor for operating request
to check the initial status of the system and four sensors response at a
time. At this time, if there is no problem, the alarm starts after
500ms of R gear shifting at 300ms intervals.
(3)
After initialization, normal mode starts 100ms later after finishing alarm output.
(4)
Alarm for obstacles is divided into 3 levels.
The first and second are intermittent sound, and the third alarms continuously
(5)
In display, the data of each sensor is sent from BCM to display, for example Cluster.
CAN communication is used for transmission and maximum gateway time is 50ms.
(6)
The efficient vehicle speed of PAS operation is under 10Km/h.
(7)
Refer to ‘Digital PAS Project LIN communication’ for the more detailed communication specification.
3.
TUNNING MODE
(1)
Basically, start condition is the same as NORMAL MODE and use TUNING TOOL as a MASTER instead of BMC MASTER.
(2)
Therefore, BCM is not connected with LIN BUS
(3)
TUNING TOOL displays the way of analog after receiving the
reference and envelop data as a format of LIN Diagnostic frame by
communicating with sensors.
(4)
Refer to ‘Digital PAS Project_LIN_communication’ for the more detailed communication Specification.
4.
CONFIGURATION MODE
(1)
Purpose of CONFIGURATION MODE is following.
–
Check assigned ID for each sensor
–
Check variant ID for each sensor
(2)
Basically, start condition is the same as NORMAL MODE and use TUNING TOOL as a MASTER instead of BCM MASTER.
(3)
Therefore, BCM is not connected with LIN BUS.
(4)
TUNING TOOL checks and assign Supplier ID and Function ID.
(5)
Refer to ‘Digital PAS Project LIN communication’ for the more detailed communication Specification.
Sensing Area
1.
Measurement condition – PVC pole (diameter 75mm, length 1m), normal temperature
2.
Distance range detected objects (Measured directly in front of sensor)
61cm(24.0in) ~ 100cm(39.4in) : ±15cm(5.9in)
31cm(12.2in) ~ 60cm(23.6in): ±10cm(3.9in)
Less than 30cm(11.8in) : ± 10cm(3.9in)
Horizontal Sensing Area
Vertical Sensing Area
Distance Measurement
Direct Measurement
Transmission and Reception are executed with one sensor
With two or three sensors, one of them sends the transmission and the others get the reception.
Direct and Indirect Measurement at once
With two or three sensors, the one sensor performs both transmission and reception, and the others perform only reception.
PAS alarm system
When the RPAS sensor detects the object, warning is operated
by audible alarm device as like buzzer. PAS sensor sends data to BCM
with LIN communication and BCM implements audible warning for each PAS
SENSOR by priority. And it performs a role of gateway only when it sends
visible alarm device such as Cluster.
–
Sensor buzzer/display information processing method of BCM In
case of RL/RR sensor information, the BCM handles each sensor
information directly about Display and buzzer output function. Buzzer
output of CL/CR sensor, BCM handles center combination information by
priority both sensor, Otherwise, about fail display information,BCM send
that to cluster each sensor information.
System Operation Spec
When the system has the power (after IGN ON and R gear),
MICOM checks every sensor channel.In case it is not find any error, it
sounds 300ms buzzer 500ms afterward.But it finds any error even a
sensor, it sounds buzzer corresponding fault sensor instead of initial
starting alarm. Function for normal mode entrance is as below
With R Gear, system function is as below
With R gear releasing, system function is as below
?acceptable error range on waveform ±10%
Alarm Output Specification classified by distance between sensors
Condition logic according to priority of alarm level is as below. (the identical sensor)
When the gear is applied to R, cluster lights the indicator as below figure.
When the system finds an object, it lights indicator
immediately. During sensing an object, if there is no object, it lights
indicator that is no alarm status for two seconds and then turns out
afterward detecting an object.
(But when it turns third step alarm to No alarm status, it lights third step alarm for two second and turns out.)
–
It shows only the detecting position of obstacles.
–
In third level alarm, indicator flickers at intervals of a second.
–
n normal alarm level display, RCR/RCL indicator is combinated by priority.
Error Handling
LIN BUS Off error case
Section
Error recognition condition
Error releasing condition
InitialRoutine
LIN BUS OFF sensing once
Error is not released in initial mode.
Normal Routine
LIN BUS OFF is sensed times in a row
The fault is released when BCM or LIN Master senses LIN BUS ON four times in a row in normal mode
? Remark :
1.
In fault counting, output message or signal should be transmitted as a Last Valid value.
2.
Error in initial mode, fault buzzer (BCM) is operated with fault display(Cluster)
3.
Error in normal mode, fault is only displayed on Cluster without buzzer.
Sensor fault (LIN Msg : 0x08)
Section
Error recognition condition
Error releasing condition
InitialRoutine
Sensor fault Message sensing once
Error is not released in initial mode.
Normal Routine
Sensor fault Message sensing four times in a row
The fault is released when BCM or LIN Master senses LIN BUS ON four times in a row in normal mode
? In fault display, RCR/RCL indicator is displayed individually
? Remark :
1.
In fault counting, output message or signal should be transmitted as a Last Valid value.
2.
Error in initial mode, fault buzzer (BCM) is operated with fault display (Cluster)
3.
Error in normal mode, fault is only displayed on Cluster without buzzer
4.
When the error occurs in direct condition, the sensors sent the same status of error for indirect condition
Communication Standard
PAS send a detecting result of object and sensor diagnosis
result to BCM according to this document, and BCM takes a role to alarm.
Indicator shows the transmitted position and alarm data, in
alarm case, it finds the nearest DATA and alarms the nearest DATA first.
(Ex. In case, RL is first step alarm and RR is third step, RR alarm has priority.)
Replacement Front Seat Belt Replacement • When installing the belt, make sure not to damage the pretensioner. 1. Remove the following items first : • Front seat assembly (Refer to the BD group - "Front Seat") • Front door scuff trim & rear door scuff trim (Refer to the BD group ...
Components Connector Pin Information Pin No.Connector A (18pin)Connector B (24pin)1Rear left speaker (+)-2Front left speaker (+)-3Front right speaker (+)-4Rear right speaker (+)Steering remocon5--6-USB D (+)7-USB/iPod VDD8Illumination (+)AUX right input9DetentAUX ground10Rear left speaker (-)MIC (+) ...