Controlled Area Network Board

Controlled Area Network Board








High- can is chanel one




Low- can is channel two

if you cant see it well then click on the picture so u can see more clear.


The language and relatinship talks

can low is being pulled down about 2.4vs

can high is being pulled up about 2.5vs by the voltmeter



Right indicator


this is a right indicator you can see the wavform flowing .The starting is of the height is long and the width is short atfer two of thoses then it goes from hieght long and width long.

Left Inicator

The starting is of the width of thick then it goes to height long and width is thick atfer that it goes height long and wiThis is a Left indicator you can see the wavform flowingdth is short and carrys on it bit differnt to the right indicator

Rear Wiper


This is a Rear Wiper you can see the wavform flowing .The starting is of the width short and the height is long and next is long height but the width is thick atfer that is height is long and the width is short it carry on the waveform relationship talks

Stoplights

This is a Stoplight you can see the wavform going up and down. you can see from the starting it all squeeze then goes from height is long and the width is thick could be long. that how a stoplight relationship works.

Fuel Pump

This is a Fuel Pump you can see the wavform. You can see the hieght it long and the width is short it reapeat once then it a big one so the height is long and the widith is thick and after that is long hieght and the width is short.

Reverse Light

This is a Fuel Pump you can see the wavform from the start it a half side then it goes hieght is long and the width is short then carry goes 2 the bottom then next one is the hieght is long and the width is thick or long then the next one is long hieght and short width.

CAN board idenfity for right hand indicator and rear wipers

sorry sir i forgot to the take wire daigam well i wil use differnt wiring diagram for the right hand incicator and rear wipers

click on this http://arrc.epnet.com.libproxy.unitec.ac.nz/autoasp/framerq.asp

the rear wipe wire colour is blue and red

the switch off is blue and white to brown wire

the switch on blue wire

the pin is 1 and 3

the relay is the level switch

Can- Multiplexing worksheet

Range Rover 2001

located with the ABS module but a sperate terminals box connected into it

colour of wire yellow and black

time per vivison 100ms

voltage per visions 2v

The Aliasing is siginal too for the time setting and hard to get the accurate readings.

you can know why these waveforms are not aliasing it by the time gap of 100ms which is very small.

those stuff i use calucaite and osicillpe to find the readings

main voltages 0.127v

pulled up talk 4.8

main voltages on the line 2.34v

the last one is 1.8v

from checking the singals in 1.3 and 1.4 with a voltmeter. readings from a voltemeter DC would nt tell you if it switching, the reason for this beacuasue on the DC it only show the main voltage but somtimes ocillope and muitlmeter reading voltages can be differnt. the main voltages that is 2.64v.

LANDROVER

AUTOBOSS SCAN TOOLS

these are availble on the scan tools

Actuator test / acuations

actual valuese ( manual select

Actual baluves ( all select)

Faults codes

Live Data

Control unit

that are controlled by CAn

electronic damper control

electronic engine power control

vehicle immobilzer

cruise control

motor/petrol/electronics

onboard monitor

dynamic stability control

radio

park distance

ride control

body electroinics

SRS airbags

Anti lock brake from BWm

the high parts in the dagiam on the left side at the bottom
all the 4 wheel speeds sensor like RR and RL and FR and FL those part are high.

the lows parts in the dagiam on the top of the diagiam is
the brake switch exterior light and switch centre also brake fluid level switch

im not sure about the gateway i think it a inturvment cluster control module

my view i think it helpful in diangosis as finding faults this is helps that shows all amout of modlules that in the vehicle and in the wiring daigam

sleep is like a low thing like drive door module but it doesnt have in the wiring diagam

ABS Relays

This when i was checking the relay wiring dragram

Name of the relay or switch that power up the ABS ECU is Ignition Switch

Name of the relay or switch that powers up the ABS ECu pump is ABS motor relay

NAme of the relay or swtch that sens pwoer to the ABS Hcu soleniods is Fail Safe Relay

Relay wire Identifications

what is the ECU pin number for the wire that brings in the pwoer to the ABS ECU?
11F

what is the ECU pin number or other number, for the wire that controls the relay for the ABS ECU is 2h

What is the pin number for the wire that brings in the power to the ABS Pump
1L

what is the pin number or other number, for the wire that controls the relay for the ABS Pump?
2H

Relay Waveform
you can see 2 patterms in 1 waveform so it two triggers. startin is Relay off then goes 12 voltgs then relay on then supply the wirings switches to the ABS pump motor to the speed sensor then goes to earth. the bottom one is EMF supplyin through the big firing then swtch the relay on then goes to grounds.
A the top part is the a relay siwtch when the ecu grouds a point of the relay and there a quick voltage drop.

ABS Pump Relay Waveform

This waveform shows that the voltage has induced arocess the coil of the relay
so when it switchted there is a somthing i dont know wt u called it . but the current to pass it by switching.

ABS self test

when you the pwer on the orange warning light turns on for a few seconds after that i looked at the oscilloscape and it was showing like analgoe waveform and you can see the power supply on the postive side of the ABS system

A faults

when the breake system applied it force on one wheel sensors then the ABS activited on the pressure the pedal goes hard when the ABS is on and realse the speeds the vibration that i feel in the pedal which it could tell me the ABS was working and it ws releasing and increasing pressure in the certian times.


ABS soleniod

the pin number is 01- 04 RR mean right rear by looking wiring dagiam of the ABS system.

you can see the solenoiods is switched and then voltages climbbes up slowly pointin on the top becausie it going really faster n the voltages open to open it. and when the brake pedeal is released it striaght away then closed and carry on the earth in the ABS ECU points.

On Vehicle Testing

identify the componets

found all the component in the car the hard part i was loookin for the RPM sendsor and Mian ABS control unit fuse/
testing ABS Wheel Speed Sensor

it analogue the reason i found it because it was showing a anaglue waveform from wheel speed sensors.

Nw measuring the air gap and the visual condition of each wheel sensors

Front right good conidtion a few grease stand on the side of the teeth plate but nothing mayor to afffect the singal the gap is 0.022m

Front left , good condtion the gap is 0.024m

Rear Right unable to see as located in the brake drum the gap is 0.023m

Rear Left unable to see as located in the brake drum the gap is 0.024m



Wheel sesnor waveform

this pattern is analogue

11 time per a second and the volts is 1.17v that how the speed sensors work when you spining the tyre. the more faster u spin the analogues moves up and down quickly, you can see the differnt betweeen slow and fast.

Using a Scan tools

finding all the sensors using the sccan tools

1. ABS VAULVE CONTROL RELAY




2. ABS WARNING LAMP STATUS




3. BATTERY POSTIVE VOLTAGES




4. LF ABS IN VALVE




5. LF WHEEL SPEED SENSOR




6. RR ABS OUT VALVE




7. HYDRAULIC PUMP MOTOR




8. BRAKE WARNING LAMP




9. BRAKE SWITCH

Using a scan tool and click on actuator test screen On nissian aveniv

3 stages seloiends

keep - hold the postion

down- down pressure

up- presssure increased

on building up pressure is

FR RH SOINOIDS

FR LH SOLEINDS

RR RH SOLEONDS

RR RL SOLEINOIDS

when your into soleenoids test mode on the muiltcan you can go to each other solenoid and push eneter then liite screen thing comes up and press it 1 to tuirn the on and 2 to turn off the hold solenoid should click like a smal vibrate . in hold postion the inlet and outlet wil be both closed

Electronics Tranmission and Scan Tools
Abbreviations
PCM- powertrain control module

TCC- torgure converter clutch

TPS- throttle postion sensors

ECT-Engine coolant temperature sensors

VSS- vehicle speed sensors

PSA- Pressure Switch Assembly

TTS-Transmission Temperature Sensors

BLOCK Diagram from HOlden manuuel book

Sensors

gear selection switch
encomory/power sitch

Throttle postion sensors

vehicel seepd sensor

air condidtion switch

engine speed sensors

tranmission

temperature sensor

Powerstrian Control Module

shift patterns

shift duartions

adaptive controls

extreme heat protections

Actuators

shift solenoids

pressure control select

torqure conster clutch solenoids

Diagnostic

Wiring diagram

Mitsubishi Galant 1996

Air condition Heater

you can see a motor blower in the daigaim and the fuse but there two fuses they are 30a and other is one is 10a and there is a relay was. the big squre has a blow siwtch and addjustble that you turn the temperature low or high.. there two ground black wires bt im surwe there is a way to connect the battery to the cicuit but somewhere.














Using a holden Shift Chart

Shift soleniods

first gears is 1-2 and 2-3
second gear is 2-3
third both of them are off
fourth gear 1-2

the car would be stuck in the 3rd and it would nt change but the car could stil drive but it would have a a very slow take off like start driving and i dont think it would have the power to drive up to the hill . maybe would have to depend on the how high is the hill. the power from the engine and the speed you like how mch pressure you put on the pedal and the grear shift of the gear box could also make a difference.

CODES

Code 14

Engine Coolant temperature (ECT) sing voltage low

Code 21 Throttle Position Sensor singal voltages high

Daignosis

code 14

the problem could be the siginsl voltage been above 140c. well use a scan tool and display eingne coolant temperture of 140 c or higher. disconnect the wiring harnesss temperature sensors and then the scan tools should display like showing the engine coolant temperature below 30c if it does then need to be replace a engine coolant sensors

code 21

if the throttle closed then use a scan tools data and if it over 1.25 volts then disconnect the wiring harness from the throttle pistion sensors. then use the scan tools and check if the TPS below 0.2 volts then try probe the TPS then use a tester light and see if it on. if it on then there is a faults connections or faulty TPS sensors.

ON Car exerise

scan tool is Multscan

honda commodere

First gear 1-2 on 2-3 on

second gear 1 -2 off 2-3 on

third gear off off

fourth gear 1-2 on 2-3 off

Torgue conveter clutch on

it is on only the forth gear and in the third gear at high revs so it lock up by itself

Torgue conveter clutch off

it is off in the first and second and third gears and reverse and park

it goes on into forth gear all the time in the third gear at high as soon as the brake was touch it and it quickly turned off.

this is a base of shitfing gears

Antilock Brasking Systems Lab Workbook 4825

ABS Repair

• spiked by careless wlding i.e MIG welding without disconnecting the battery is true




• Encolsure seal damaged wid obvious sign of water ingress is true




• Obvious signs of mechanical damage to the encolsure is false




• Faults are more likely to be connections or sensors is true

You culd use the scan tool and have a look to see if there a diagnostic trouble code
Using ocillocpe or muiltmeter to test all the wheel speed sensors and do all the test that needed to be. Check all the connections expecially connnections to the ECU and check wiring for damage.

Components of the ABS wiring and operations

1. 1 disc





2. wheel speed sensors





3. Rotor





4. HCU/ ECu





5. master cylinder





6. Calliper /wheel cylinder





7. booster
   
   
   

Front right: white and black

Front left: green and red

Rear left : blue and pink

Rear right :yellow and brown

the reasons for braded wire: because it has anti interence and doesnt make the ECU confuse and stop the electrical going out

There 5 fuses in the ciurit

1. main fuse





2. gauge fuse





3. dome fuse





4. stop fuse





5. ECU

ABS Motor pin number is 1A

ABS control unti pin number is 10B and 7B

Wheel cylinders

Font right wheel

pin number 3B And 7B . wire colour Red and white + red and green

Front Left wheel

pin number .3B and 7B Wire colour blue and red +black and white

Rear Left Wheel

pin number 4b and 8b wire colour geen and black + green and yellow

Rear Right Wheel

pin number 1b and 5b wire colour brown and white + brown and red

The conditon of the inlet and outlet solsnoid valves under normal braking

the wrong answer is inlet valve closed - outlet valve open

The condition of the inlet and outlet solenoid valves when the ABS is operating to reduce wheel break pressure

the right answer is inlet valve closed - out let valve open

The condition of the inlet and outlet solenods valves when the ABS is operating to hold brake pressure

the correct was one the inlet valve closed - outlet valve closed

Condtion of the inlet and outlet sensoids valves when the ABS is operating to increase wheel breake pressure.

the wrong answer is inlet valvve closed - out valve open

The ABS motor wil be working


this a graph of the digital singal with 5 volts and every 2 seconds

Sorry sir i forgot to add the time for the second and the top it on and botom line is off.
so when the brake fluid goes through the outllet vlave it fills with resvoir and then the motor is used to operate like working as the pump pushing the fliud back to the chamber and into the brake tube lines from the master cylinder.

This a picture of the analogue signals wid a freuecny of 0.5HZ

ABS Demonstrators

Left Front ECU Pin 4 and 5

Left Rear ECU Pin 7 and 9

Right Front ECU Pin 11 and 21

Right Rear ECu Pin 24 and 26

the type of the speed sensor is Inductive

ABS speed sensors check the rotation of each tire, making sure that each wheel is rotating properly and working well. Any slippage or difference between the wheels triggers the ABS system.

Using a Ocillosope is a Tektronix type

Record a waveform for weheel speed sensors.

The all four wheel speeds sensors very same to me but nothing diffent pattern when testin the other 3 speed sensors. Because all 4 wheel is same and the air gap as well so they al of them are the same. The times period is the same on all these warforms bt the voltages varys and this can be the air betweeen the sensors and reduvtor so when the gap is smaller the voltage would be lower.

Measuring AC volts wid a multi-meter
Left Front 3.2v
Left Rear 2.7v
Right front 4.1v
Right Rear 2.9v
P/c x .707 =RMS
3.2/ .7097 =4
be as accurtate in finding with the wheel speed sensors is NO
well it bit strange all the wheel speed sensor voltages are differnt and i dont think that is not normal. could be some faults or maybe depend how mch pressure like pushin the brake down and put the somthing on the teeth and press it and find the readings well my view if there are a couple of teeth missing on the gear the mulitermter would nt really show and the oscillaope wil ahve a change in time.