中央控制器的功能介绍.doc

STROUDLEY ROAD
DANESHILL IND EST
BASINGSTOKE
HAMPSHIRE
RG24 8UG
DRAWN BY
BJ & GS
APPROVED BY
&
MAY

SCOFIELD

LONDON TAXIS INTERNATIONAL LTD (LTI)

ELECTRICAL SPECIFICATION &

CONNECTOR INTERFACE DETAILS

FOR THE CENTRAL CONTROL UNIT &

ANCILLARIES

Lower Cost VERSION – MASIE 2

Includes Euro III & IV Engine support

GENERAL ELECTRICAL SPECIFICATION

MINIMUM OPERATING VOLTAGE
9V (at CCU)
MAXIMUM OPERATING VOLTAGE
16V (at CCU)
NOMINAL OPERATING VOLTAGE (engine off)
12.5V (at battery)
NOMINAL OPERATING VOLTAGE (engine on)
14.4V (at battery)
TARGET QUIESENT CURRENT FOR CCU
<20mA
LOAD DUMP PROTECTION
<40V for 400mS

All power ratings of lamps are nominal @ 12V. Current consumption figures presented in this document should be measured with the vehicle operating voltage of 14.4V as measured at the battery terminals whilst the engine is running.

TRANSIT LINK HARNESS – CCU must power up normally when the normal battery signal is removed and only and Ignition feed is provided.

NOTE 1 : The information presented in this document provides all pinout options. These features are not necessarily provided for all market variations.

NOTE 2 : Where possible unique connectors have been chosen to eliminate the possibility of the incorrect cable being used. Where this has not been possible it is required that the wiring loom is manufactured in such a way that it is very difficult to insert a plug in the wrong socket.

NOTE 3 : The AMP 070 series of connectors have current limitations per pin according to the information provided below (supplied by the manufacturer). Multiple contacts have been provided where high current circuits connect to the ECU. It is the responsibility of the vehicle manufacturer to ensure that the multiple contacts are used appropriately so that individual contacts are not overstressed.

Wire size (mm2)
Maximum current (Amps DC)
0.2
6
0.3
8
0.8
11
0.85
15
1.25
19

Number of positions
Reduction coefficient
1
1
2-3
0.75
4-5
0.6
6-8
0.55
9-12
0.5
13 and over
0.4

NOTES - ALL ECU CONNECTORS ARE CAP HOUSINGS (PLUG TYPE BLADE CONTACTS IN A SOCKET RECEPTACLE BODY)

The following table shows the inputs required by the various parts of the system in order to generate the required outputs

‘MOM’ indicates that the input comes from a ‘biased off’ switch, button or pulsed signal that may only activate for a short time (EG the front wiper park signal would signal would only occur as the wiper passed through the park position) ‘CONT’ indicates that the input comes from a latching type switch or continuous signal when activated) :-

TABLE 1
STATIC SIGNALS – EG SWITCH INPUTS ETC
INPUT NUMBER
INPUT
DESCRIPTION
SWITCH TYPE
( HIGH / LOW, MOM / CONT )
SIGNAL TYPE/LEVEL
MIN SWITCH CONTACT CURRENT REQUIRED
COMMENTS
1
INDICATOR STALK LEFT
LOW CONT
0V EARTH
15mA
LOW = FLASH
2
INDICATOR STALK RIGHT
LOW CONT
0V EARTH
15mA
LOW = FLASH
3
LIGHTS SWITCH SIDE
HIGH CONT
+ BATT
5mA
HIGH = ON
4
LIGHTS SWITCH MAIN
HIGH CONT
+ BATT
15mA
HIGH = ON
5
LIGHTS FRONT FOG
HIGH CONT
+ BATT
15mA
HIGH = ON
6 **
IGNITION SWITCH
HIGH CONT
+ BATT
5mA
HIGH = ON
7 **
ACCESSORY SWITCH
HIGH CONT
+ BATT
5mA
HIGH = ON
8 **
VEHICLE BATTERY DIRECT
DC
+ BATT

INTERNAL SUPPLY
9
REVERSE GEAR SWITCH
HIGH CONT
+ BATT
5mA
HIGH = REVERSE
10***
FOOTBRAKE SWITCH
HIGH CONT
+ BATT
10A
HIGH = BRAKING
11
INTERCOM ENABLE
HIGH CONT
+ BATT
15mA
HIGH = ENABLE
12
TAXIMETER ‘STOPPED’
HIGH CONT
+ BATT
5mA
HIGH = STOPPED
13
MAIN BEAM SWITCH INPUT
HIGH CONT
+ BATT
5mA
HIGH=ACTIVE

14
WASHER FRONT
LOW MOM
0V EARTH
15mA
LOW = WASH
15
LIGHTS REAR FOG
LOW MOM
0V EARTH
15mA
LOW = ON
16
WASHER REAR
LOW MOM
0V EARTH
15mA
LOW = ON
17
WINDOWS FRONT LEFT UP
LOW MOM
0V EARTH
15mA
LOW = UP
18
WINDOW FRONT LEFT DOWN
LOW MOM
0V EARTH
15mA
LOW = DOWN
19
WINDOW FRONT RIGHT UP
LOW MOM
0V EARTH
15mA
LOW = UP
20
WINDOW FRONT RIGHT DOWN
LOW MOM
0V EARTH
15mA
LOW = DOWN
21
WINDOWS REAR LEFT UP
LOW MOM
0V EARTH
15mA
LOW=UP
22
WINDOWS REAR LEFT DOWN
LOW MOM
0V EARTH
15mA
LOW=DOWN
23
WINDOWS REAR RIGHT UP
LOW MOM
0V EARTH
15mA
LOW=UP
24
WINDOWS REAR RIGHT DOWN
LOW MOM
0V EARTH
15mA
LOW=DOWN
25
HEATED REAR SCREEN
LOW MOM
0V EARTH
15mA
LOW = ON
26
CDL FRONT LOCK
LOW MOM
0V EARTH
15mA
LOW = LOCK
27
CDL FRONT UNLOCK
LOW MOM
0V EARTH
15mA
LOW = UNLOCK
28
CDL REAR LOCK
LOW MOM
0V EARTH
15mA
LOW = LOCK
29
CDL REAR UNLOCK
LOW MOM
0V EARTH
15mA
LOW = UNLOCK
30
CDL ALL LOCK
LOW MOM
0V EARTH
1mA
LOW = LOCK
31
CDL ALL UNLOCK
LOW MOM
0V EARTH
1mA
LOW = UNLOCK

32 **
VEHICLE GROUND

0V EARTH

INTERNAL SUPPLY
33
WHEELCHAIR BELT SWITCH
LOW CONT
0V EARTH
15mA
LOW = WARNING
34
HAZARD SWITCH
LOW CONT
0V EARTH
15mA
LOW = FLASH
35
DOOR FRONT RIGHT SWITCH
LOW CONT
0V EARTH
15mA
LOW = OPEN
36
DOOR FRONT LEFT SWITCH
LOW CONT
0V EARTH
15mA
LOW = OPEN
37
DOOR REAR RIGHT SWITCH
LOW CONT
0V EARTH
15mA
LOW = OPEN
38
DOOR REAR LEFT SWITCH
LOW CONT
0V EARTH
15mA
LOW = OPEN
39
BONNET SWITCH
LOW CONT
0V EARTH
15mA
LOW = OPEN
40
BOOT SWITCH
LOW CONT
0V EARTH
15mA
LOW = OPEN
41
WIPER FRONT FAST
LOW CONT
0V EARTH
15mA
LOW = ON
42
WIPER FRONT SLOW
LOW CONT
0V EARTH
15mA
LOW = ON
43
WIPER FRONT INTERMITTENT
LOW CONT
0V EARTH
15mA
LOW = ON
44
WIPER REAR INTERMITTENT
LOW CONT
0V EARTH
15mA
LOW = ON
45
WIPER REAR SLOW
LOW CONT
0V EARTH
15mA
LOW = ON
46
MOTION LOCK RIGHT OK
LOW CONT
0V EARTH
15mA
LOW = LOCKED
47
MOTION LOCK LEFT OK
LOW CONT
0V EARTH
15mA
LOW = LOCKED
48
LOW WASHER SENSOR
LOW CONT
0V EARTH
15mA
LOW = WARNING
49
FRONT INTERIOR LAMP SWITCH
LOW CONT
0V EARTH
15mA
LOW = ON
50
REAR INTERIOR LAMP SWITCH
LOW CONT
0V EARTH
15mA
LOW = ON
51
DRIVERS SEAT BELT
LOW CONT
0V EARTH
15mA
LOW=BELT ENGAGED
52
KEYSWITCH
LOW CONT
0V EARTH
15mA
LOW=ACTIVE
53
HANDBRAKE
LOW CONT
0V EARTH
5mA
LOW=ACTIVE

** means signal is used for internal ECU power feed.
*** input used to power brake lamps as well as signal to ECU for motion locking.

NOTE: Switch wetting current can be reduced if the switch is permanently attached to an external load, e.g lamp, motor. ECU only needs to provide a pull up/down in the event that the load is disconnected. Minimum wetting current specified with a supply Voltage of 12V to the ECU.

TABLE 2
DYNAMIC SIGNALS – EG AC AUDIO, DC PULSED ETC
INPUT NUMBER
INPUT
DESCRIPTION
SIGNAL FORM
SIGNAL TYPE/LEVEL
VOLTAGE RANGE
COMMENTS
54
SPEED TRANSDUCER SIGNAL (+)
DIGITAL
PULSE TRAIN
<11V PK SQ WAVE
-
55
ENGINE MANAGEMENT INPUT
DIGITAL
OPEN COLLECTOR
CCU PULL UP TO 12VOLTS

56
FRONT WIPER INTERMITTENT SPEED CONTROL
ANALOGUE
RESISTANCE WRT GROUND
1K OHMS MIN TO 0 OHMS MAX
ADC INPUT
57
MICROPHONE FRONT SIGNAL IN + BIAS OUT
ANALOGUE
AUDIO
<10mVac
-
58
MICROPHONE FRONT SCREEN
-
-
GROUND
-
59
MICROPHONE REAR LEFT SIGNAL IN + BIAS OUT
ANALOGUE
AUDIO
<10mVac
-
60
MICROPHONE REAR LEFT SCREEN
-
-
GROUND
-
61
MICROPHONE REAR RIGHT SIGNAL + BIAS
ANALOGUE
AUDIO
<10mVac
-
62
MICROPHONE REAR RIGHT SCREEN
-
-
GROUND
-
63
ULTRASONICS RX HIGH
ANALOGUE
DC LEVEL (OUT) WITH SUPERIMPOSED CURRENT MODULATED INPUT (VIOLATION INPUT)
>11VDC
RX POWER (OUT), AND SIGNAL INPUT
64
ULTRASONICS RX LOW
ANALOGUE
DC LEVEL (OUT) WITH SUPERIMPOSED CURRENT MODULATED INPUT (VIOLATION INPUT RETURN)
<1VDC
RX POWER (OUT), AND SIGNAL INPUT RETURN
65
ULTRASONICS RX SCREEN
-
-
GROUND
MAY NOT BE REQUIRED – INCLUDE FOR ‘BELT AND BRACES’
66
INTERCOM VOLUME FRONT SIGNAL
ANALOGUE
DC
2 mA CONSTANT CURRENT FEED
-
67
INTERCOM VOLUME GROUND
-
-
GROUND
-
68
USB DIAGNOSTICS COMMS USBDP
DIFFERENTIAL SIGNAL POSITIVE BI DIRECTIONAL

DIGITAL
USB
4.9 VOLTS PEAK WRT GROUND
-
69
USB DIAGNOSTIC COMMS USBDM
DIFFERENTIAL SIGNAL NEGATIVE,BI DIRECTIONAL
DIGITAL
USB
4.9 VOLTS PEAK WRT GROUND
-
70
TOUCHKEY SIGNAL
DIGITAL
COMMS
5V PEAK WRT GROUND

71
TOUCHKEY RETURN

GROUND
SIGNAL RETURN

4.1.1 Outputs

The following table details the outputs required from the main ECU:-

OUTPUT NUMBER
OUTPUT
DESCRIPTION
OUTPUT DRIVE
SIGNAL VOLTAGE / CURRENT REQUIREMENT
COMMENTS
1
LEFT TURN INDICATORS/
HAZARDS AND LEFT INDICATOR TELLTALE
SOLID STATE HIGH SIDE DRIVE
12VDC @ 4.1A CONTINUOUS,
PEAK INRUSH CURRENT LIMITED TO <50A
LAMPS = 2 x 21W + 1 x 5W +1 x 1.2W
1HZ FLASH RATE NOM,
2HZ FLASH RATE IF CURRENT DRAW <3.45A
2
RIGHT TURN INDICATORS/
HAZARDS AND RIGHT INDICATOR TELLTALE
SOLID STATE HIGH SIDE DRIVE
12VDC @ 4.1A CONTINUOUS,
PEAK INRUSH CURRENT LIMITED TO <50A
LAMPS = 2 x 21W + 1 X 5W + 1 x 1.2W
1HZ FLASH RATE NOM,
2HZ FLASH RATE IF CURRENT DRAW <3.45A
3
HAZARD TELLTALE INDICATOR
SOLID STATE HIGH SIDE DRIVE
12VDC @ 0.1A CONTINUOUS,
CURRENT LIMITED TO <=1A MAX
LAMPS = 1 x 1.2W
MUST BE OPPOSITE PHASING TO LEFT/RIGHT INDICATOR TELLTALE
4
FRONT FOG LAMPS &
TELLTALE LAMP
SOLID STATE HIGH SIDED DRIVE
12VDC @ 10A CONTINUOUS,
100A MAX SURGE
LAMPS = 2 x 55W + 1 x 1.2W
5
REAR FOG LAMP AND REAR FOG LAMP TELLTALE
SOLID STATE HIGH SIDED DRIVE
12VDC @ 4A CONTINUOUS,
30A MAX SURGE
LAMPS = 2 x 21W + 1 x 1.2W
6
WIPER FRONT FAST
SOLID STATE HIGH SIDED DRIVE
12VDC @ 6A CONTINUOUS,
15A MAX SURGE
DRIVES FAST WINDING ONLY
7
WIPER FRONT SLOW/
INTERMITTENT
SOLID STATE HIGH SIDED DRIVE
12VDC @ 6A CONTINUOUS,
15A MAX SURGE
DRIVES SLOW WINDING ONLY
8
WIPER FRONT PARK SWITCH 'COMMON'
RETURN INPUT FROM WIPER MOTOR
12VDC @ 6A CONTINUOUS,
15A MAX SURGE

FEEDBACK FROM MOTOR
9
WIPER REAR
SLOW/
INTERMITTENT
SOLID STATE HIGH SIDED DRIVE
12VDC @ 5A CONTINUOUS,
15A MAX SURGE
DRIVES SLOW WINDING ONLY
10
WIPER REAR PARK SWITCH
RETURN INPUT FROM WIPER MOTOR
12VDC @ 5A CONTINUOUS,
15A MAX SURGE

FEEDBACK FROM MOTOR
11
MOTION LOCK LEFT ACTUATOR
DC INDUCTIVE, SOLID STATE, HIGH SIDE DRIVE
12VDC @ 1.5A CONTINUOUS,
10A MAX SURGE,

ON = LOCKED
12
MOTION LOCK RIGHT ACTUATOR
DC INDUCTIVE, SOLID STATE HIGH SIDE DRIVE
12VDC @ 1.5A CONTINUOUS,10A MAX SURGE

ON = LOCKED
13
FRONT COURTESY LAMPS
DC, RESISTIVE, HIGH SIDE SOLID STATE PWM DRIVE
12V PULSED DC,
MAX CURRENT 2A. SQUAREWAVE, WITH 0% TO 100% PWM VARIABLE MARK SPACE RATIO
LAMPS = 26W.
INSTANT ‘ON’ WITH SLOW ‘OFF’ FADE
14
REAR COURTESY LAMPS
DC, RESISTIVE, HIGH SIDE SOLID STATE PWM DRIVE
12V PULSED DC
MAX CURRENT 4A.
SQUAREWAVE, WITH 0% TO 100% PWM VARIABLE MARK SPACE RATIO
LAMPS = 40W
INSTANT ‘ON’ WITH SLOW ‘OFF’ FADE
15
HEATED REAR SCREEN
DC RESISTIVE, HIGH SIDE SOLID STATE DRIVE
12VDC @ 16A CONTINUOUS,
CURRENT LIMITED TO <=22A MAX
INCLUDES TELLTALE & HEATED MIRRORS
16
LEFT DIPPED BEAM
HIGH SIDED SOLID STATE SWITCH
12VDC @ 5A CONTINOUS, CURRENT LIMITED TO >=5A
MAX INRUSH CURRENT =50A
LAMP = 55W HEADLAMP BULB
17
RIGHT DIPPED BEAM
HIGH SIDED SOLID STATE SWITCH
12VDC @ 5A CONTINOUS, CURRENT LIMITED TO >=5A
MAX INRUSH CURRENT =50A
LAMP = 55W HEADLAMP BULB
18
BRAKE LAMPS
NOT SWITCHED CURRENT MONITORING ONLY
10A FUSED FEED FROM BRAKE PEDAL SWITCH
LAMPS = 2 x 21W + 4 x 5W
19
WASHER FRONT/REAR HI
SOLID STATE ‘H’ BRIDGE
12VDC @ 6A CONTINUOUS,
10A MAX SURGE
BIPOLAR PUMP DIRECTS FLOW TO FRONT OR REAR
20
WASHER FRONT/REAR LO
SOLID STATE ‘H’ BRIDGE
12VDC @ 6A CONTINUOUS,
10A MAX SURGE
BIPOLAR PUMP DIRECTS FLOW TO FRONT OR REAR
21
WINDOW FRONT LEFT MOTOR HI
SOLID STATE ‘H’ BRIDGE
12VDC @ CURRENT LIMITED TO 12A (SOFTWARE DEFINED)
BIPOLAR BRIDGE MOTOR DRIVE
22
WINDOW FRONT LEFT MOTOR LO
SOLID STATE ‘H’ BRIDGE
12VDC @ CURRENT LIMITED TO 12A (SOFTWARE DEFINED)
BIPOLAR BRIDGE MOTOR DRIVE
23
WINDOW FRONT RIGHT MOTOR HI
SOLID STATE ‘H’ BRIDGE
12VDC @ CURRENT LIMITED TO 12A (SOFTWARE DEFINED)
BIPOLAR BRIDGE MOTOR DRIVE
24
WINDOW FRONT RIGHT MOTOR LO
SOLID STATE ‘H’ BRIDGE
12VDC @ CURRENT LIMITED TO 12A (SOFTWARE DEFINED)
BIPOLAR BRIDGE MOTOR DRIVE
25
WINDOW REAR LEFT MOTOR HI
SOLID STATE ‘H’ BRIDGE
12 VDC @ CURRENT LIMITED TO 12A (SOFTWARE DEFINED)
BIPOLAR BRIDGE MOTOR DRIVE
26
WINDOW REAR LEFT MOTOR LO
SOLID STATE ‘H’ BRIDGE
12 VDC @ CURRENT LIMITED TO 12A (SOFTWARE DEFINED)
BIPOLAR BRIDGE MOTOR DRIVE
27
WINDOWS REAR RIGHT MOTOR HI
SOLID STATE ‘H’ BRIDGE
12 VDC @ CURRENT LIMITED TO 12A (SOFTWARE DEFINED)
BIPOLAR BRIDGE MOTOR DRIVE
28
WINDOWS REAR RIGHT MOTOR LO
SOLID STATE ‘H’ BRIDGE
12 VDC @ CURRENT LIMITED TO 12A (SOFTWARE DEFINED)
BIPOLAR BRIDGE MOTOR DRIVE
29
CENTRAL DOOR LOCK FRONT MOTOR HI
SOLID STATE ‘H’ BRIDGE
12VDC @ 8A TYPICAL PULSE
(2 MOTORS)
BIPOLAR BRIDGE MOTOR DRIVE
30
CENTRAL DOOR LOCK FRONT
MOTOR LO
SOLID STATE ‘H’ BRIDGE
12VDC @ 8A TYPICAL PULSE
(2 MOTORS)
BIPOLAR BRIDGE MOTOR DRIVE
31
CENTRAL DOOR LOCK REAR MOTOR HI
SOLID STATE ‘H’ BRIDGE
12VDC @ 8A TYPICAL PULSE
(2 MOTORS)
BIPOLAR BRIDGE MOTOR DRIVE
32
CENTRAL DOOR LOCK REAR
MOTOR LO
SOLID STATE ‘H’ BRIDGE
12VDC @ 8A TYPICAL PULSE
(2 MOTORS)
BIPOLAR BRIDGE MOTOR DRIVE
33
MOTION LOCK LEFT DASH TELLTALE LAMP
LOW SIDED SOLID STATE SWITCH
12VDC @ 0.1A CONTINUOUS,
CURRENT LIMITED TO <=1A MAX
LAMP = 1.2W MAX OR LED DRIVE
34
MOTION LOCK RIGHT DASH TELLTALE LAMP
LOW SIDED SOLID STATE SWITCH
12VDC @ 0.1A CONTINUOUS,
CURRENT LIMITED TO <=1A MAX
LAMP = 1.2W MAX OR LED DRIVE
35
MOTION LOCK SYSTEM ‘OK’ DASH TELLTALE LAMP
LOW SIDED SOLID STATE SWITCH
12VDC @ 0.1A CONTINUOUS,
CURRENT LIMITED TO <=1A MAX
LAMP = 1.2W MAX
OR LED DRIVE
36
LOW WASHER
WARNING LAMP
LOW SIDED SOLID STATE SWITCH
12VDC @ 0.1A CONTINUOUS,
CURRENT LIMITED TO <=1A MAX
LAMP = 1.2W MAX OR LED DRIVE
37
ALARM SIREN COMMUNICATIONS
COMMS SIGNAL
5V PK TO PK @ 20mA MAX
BI-DIRECTIONAL COMMS
38

4028PPM SCALED TAXIMETER SIGNAL
CURRENT LIMITED, LOW SIDE, SQUARE WAVE DRIVE WRT GROUND, WITH INTERNAL PULL-UP
12VDC PEAK SQUAREWAVE
NO TAMPER PROTECTION REQUIRED BY PCO.
39
ULTRASONICS TX POWER HI
SWITCHED POWER LINE
12VDC @ <20mA
CPU CONTROLLED TX POWER LINE
40
ULTRASONICS TX POWER LO
GROUND
GROUND
-
41
FRONT INTERCOM SPEAKER +VE
ANALOGUE
12V PK to PK
POWER FUSED WITH 2.5A THERMAL FUSE
42
FRONT INTERCOM SPEAKER –VE
GROUND
GROUND
-
43
REAR INTERCOM SPEAKER +VE
ANALOGUE
12V PK to PK
-
44
REAR INTERCOM SPEAKER -VE
GROUND
GROUND
-
45
INDUCTION LOOP
+VE
ANALOGUE
24V PK to PK
-
46
INDUCTION LOOP
–VE
ANALOGUE
24V PK to PK
-
47
BATTERY DISCHARGE PROTECTION
LOW SIDED OUTPUT
OUTPUT PULSED TO CONTROL BISTABLE RELAY
NOT USED

Siren – Connections external to CCU required

48
ALARM SIREN POWER
PERMANENT DC SUPPLY
12V SUPPLY @ 1.5A MAX
ONLY USED IF ALARM SYSTEM FITTED
49
ALARM SIREN GROUND
0V EARTH
GROUND
"

KEY TO COLUMN ‘S’ (ACTIVE SIGNAL STATE)

­ = HIGH SIDE SIGNAL, INPUT / OUTPUT SWITCHES TO +12V
¯ = LOW SIDE SIGNAL,