Wednesday, November 17, 2010

Controlled Area Network Board

Using the dual trace feature on the oscilloscope capture the full pattern of the H-CAN and L-CAN. Identify which wire is the H-CAN and which is for the L-CAN 
Blue wire is for H CAN
Yellow wire is for L-CAN
Black wire is earth
On Board CAN system

On your capture also identify were the data pattern start and finishes


with red highlight the data pattern starts and with blue highlight finish.

Right indicator
Lift indicator

Rear Wiper
Stoplights
Fuel pump
Revers light
These pictures are shown patterns which is individual for every load. like right indicator, left indicator, rear wiper, stoplight, fuel pump and revers light.In these picture above the both channels means mirror of each
others.
this board is kind of CAN nod and network, which these node have with I/O circuit and also have CAN contrroler and a line driver which interfaces the CAN L and CAN H different current to the controlling.

Saturday, November 13, 2010

2.0 Scan Tool Obervations

2.2 which scan tool are you using? Quackscan.
2.2 What different functions are available on the scan tool to examine the CAN system? EHC/ EH2 Electrical high. manual Scan

2.3 List the different system that are controlled by CAN?
EHC/EHC2 electrical ride  highest level (fast)
ABS stability control (fast)
EDC Electrical Damper Control (fast)
SRS air bag (slow)
2KE body electrical slow
IHKR Heater/Air condition (slow)
IkE Instrument Cluster (slow)
Steering angle sensor (slow)
DME/DDE motor and petrol (slow)
EMC (fast)
EGC (fast)
EWS vehicle immobilizer (slow)
CR Crous conrol (slow)

Thursday, November 4, 2010

Shift Chart 4L60-E

Use the following Holden shift chart for questions below.


Shift Solenoid
Which solenoids are "on" when this vehicle is shifted into Drive and start out in first gear?
1st-2nd and 2nd- 3rd gear


Which solenoids are "on" when this vehicle automatically shifts into second gear?
2nd and 3rd gear


Which solenoids are "on" when this vehicle automatically shifts into third gear?
None both solenoid off


Which solenoids are "on" when this vehicle automatically shifts into fourth gear?
1st and 2nd


Shift Solenoid Malfunction: Describe what would happen if none of the solenoids came "on" would the vehicle drive? What gear would it be in? How fast could the vehicle go? Could it have the power  to climb a hill?
If all the solenoids were off  then the only available gear on the vehicle could be 3rd gear to be used . this because the 3rd gear does not need any solenoid to be "on" therefore the vehicle slow during the initial start and can be use 3rd gear. the drive up the hill only the vhicle is on uning start

Wiring Diagram

Now you have identified all the appropriate inputs and outputs , sketch a wiring diagram to include all of these components , note include all fuses and power and grounds.



Block Diagram

Obtain the appropriate workshop manual or identify all the sensor and actuators for the vehicle you are working on and fill in the following Block diagram.







Electronic transmission and Scan Tools

Before we began this lesson lets start with some terminology .
Note: these abbreviations are from the GM work shop manual but are fairly common for most makes and models.Describe what they mean below.


Abbreviations


PCM= Power Control Module
TCC=  Torque Converter Clutch 
TPS =  Throttle Position Sensor
ECT  = Engine Coolant Temperature Sensor
VSS =  Vehicle Speed Sensor
RSA = Transmission Range Fluid Pressure Switch Assembly 
TTS =  Transmission Temperature Sensor



Using a Scan Tool

Using a scan tool go to the ABS live data screen and note all the sensors, data and what it is telling you.
All the data record on the picture
If we using the scan tool for testing wheel speed sensor, the scan tool gave us the current data read out speed sensor reading KM/h.
The car was Honda Accord 2006 with OBD2 system . we used the scan tool and spun the wheel and got these data.

Using the scan tool on the vehicle you have been assigned to. Go to the actuator test screen.
Note below what component you have tested and what happened when you tested that component and the test results.


These are the actuators condition which are shows on the scan tool and the result shows that are good conditions.