Controlled Area Network Board

There are two pattern in above graph. Channel one graph is pulling down by channel two and channel two is by channel one. They are pulling up and down by each other in different interval of time. Channel two is pulling up to higher value than channel one to lower value by channel two. The base voltage for channel  one is  3.1V and for channel two is 1 V. Both voltages switch on and off simultaneously.

Right Indicator Pattern:

The pattern starts changing at A and B. This is the point where two signals start talking each others. At D and C, there is a big pulling between two signals.

Left Indicator:

The pattern of both waves start change at A and F. This the point where two signals start talking with each others. At B and just after H, the pattern is some different from its original. May be they stop talking with each others. At C and G, the signals again start talking with each others. At D and I, they stop talking as it looks like as a original pattern.

At A and D, the patterns start changing, the signals start talking to each other at this point. They patterns came back to its original form (upper B) and again start talking at lower B till C and E. After C and G, the patterns again come back to its original form.

Stoplights:

The patterns start changing at A and H. It is the point where two signals starts talking to each others. The patterns come back to their original form at B and H for a moment and again start talking at C and F. At D and G the waveforms came back to their original form for a long time.

Fuel Pump:

The signals start changing pattern at A and F. They start talking at this point. Then the came  back to their original pattern at B and J. They changed their pattern at G and C. Their is a big stationary pattern at E and I

Reverse Lights:

There is a change in pattern at A and E and it come back to its original form at B and H. C and F are the indistinguishable patterns. There is a big stationary pattern D and G.

Using the wiring diagram and CAN board identify the input/output pins, wire colours. Relay or transistor for the right hand indicator and rear wiper:
The pin number for right hand side indicator on board with respect to wiring diagram is 7 and for rear wiper is 9.
Transistor for right hand indicator is U7 but there is no relay for it.
There is no transistor for rear wiper. It has RL4s relay only.

Using the wiring diagram identify both voltage regulators that resemble the one that you built in TTEC4824. Note all the input pins and where the output are connected to

Input pins for regulator no.1 are 1 and 2. Output were connected to pin no. 14 of the IC (Intergreated chip)
Input pins for regulator no.2 are 1 and 2. Output were connected to pin no. 1 of the IC, resistor R17 and R20, diode D4 and D6.
  
Using the wiring diagram follow one circuit though from the input to the output. Note all the inputs/IC/ relay/transistors and describe how the circuit operates.


12 V input supply at pins 1 and 2 then it go to voltage regulator and then output goes to capacitor in parallel and to pin no.14. If pin 14 is connected to pin no.1 then it goes to resistance R29. After that it goes to another chip circuit and then connected to the resistor and transistor in parallel and the output goes to pin no. 1 which is for tail light.
The 12 V input is coming into voltage regulator, which regulate the voltage and cut it down to some lower value  it then charge the capacitor which is in parallel with IC. IC futher regulate the voltage and pass on the resistance R29. After that the current goes to the chip having light emitting diode which active the transistor in it to activate the another transistor U3 which is connected to a resistor R24 in parallel and this transistor takes the output voltage to the tail light.