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