User:Ahsanriaz6157/enes-100/project 3

My Instructor's user page which points to this.

week 1

 * 1) explored wires inside an ECU of "isuzu hombre"
 * 2) matched wires of ODB to the wires in ECU.

White brown (OBD wire) : B23, A16 (ECU wire)

brown : A14, A30

Black White : C17, B1

Purple : C9,B30,A13,A27

Orange : 3B

Orange wire in ECU is 3B

1.Fuel pump pressure switch

2.ECM| BAT fuse

3.Fuel Pump relay

3B connected to C18 (pink colored)

C18 further connected to B2 (pink)

Pink wires in schematic diagram

1. Pink wires goes into fuel injectors

2.Ignition coil assembly

3.CANster VENT valve (goes into C5 (white))

4.HOT N RUN bulb TEST or START engine fuse relays(15, 20A, 20A, 20A)

5.B3 (orange)<-> C18, B2 (pink wires) <-> B3(DK green)

Pink wires pass through engine fuse and fall into uel injectors. Purple wires in schematic diagram

C9 : vehicle speed sensor

B30 : missing

A13 : pre converter oxygen sensor

A27 : to instrument panel

Goes into various sensors

Black white wires in schematic diagram

C17 : missing

B1 : missing

black wires in diagram B11 (not in ECU) : fuel injectors and connects to A7(Blue Black) B10 (lt grey Black) A2 (purple Black)

B14 : map sensor, EGR valve sensor, tank vacuum sensor, intake air temp sensor <-> A30

A23 : missing in diagram

B12 : Throttle position sensor <-> Engne coolant Temp. sensor (leads to A8(yellow))

Tan wires in schematic diagram

A14 : missing (diagram)

A30 : intake air temperature sensor <-> connected with Black; Black runs into tank vacuum sensor, egr sol valve,map sensor; <-> grey originates from black.

Grey wires : A1, B29, B13 (sensors and valves)

skin white wires in schematic diagram

B23 : missing

A16 : purple white in diagram

A15 : post converter oxygen sensor

hypothesis

1 single colored wires are connected to various sensors,valves, switch,fuel pump and its relay and connectors.

2. multi colored wires goes into control units, ignition coil assembly, fuel injectors, and also into sensors.

3. B17- B29 are connected to sensors.

 File:"A" ECU portal 3.JPG|thumb|"A" ECU portal 3 File:A portal of ECU.JPG|thumb|"A" portal of ECU File:A portal of ECU 1.JPG|thumb|A portal of ECU 1 File:"B" portal of ECU.JPG|thumb|"B" portal of ECU File:"B" portal of ECU 2.JPG|thumb|"B" portal of ECU 2 File:"C" portal of ECU.JPG|thumb|"C" portal of ECU File:"C" portal of ECU 3.JPG|thumb|"C" portal of ECU 

Next steps
1. make ECU active

2. Chase power in the ECU with the help of a multimeter and probe.

3.Connect ECU to the OBD wires and perform experiments for having a different message on the ODB scanner screen.

 File:Diagram145163105.JPG|next experiment diagram 

Week2 Narrative
1. Performed experiment for finding a different message on ODB scanner screen

2. Performed experiment for powering ODB through CANbus shield- arduino, charger, ECU.

3. Bought a seat belt system, ECU of corolla, Viper system and the CANbus related device having fuse relays.

problems
1. The crazy rays did not give receipt; hence, could not use college money there.

2. Went to another auto part store, They were expensive and were not having our desired parts.

3. Had to explain about CANbus to every retailer, to get our desired parts.

next steps
1. Got the new ECU, study its wirring schematics and replace it with our old ECU 2. Document the structure of a CANbus and its operation.

Week3 Narrative
1. figured out the model of a new ECU bought from a used auto part store.

2. Found the wiring table of the ECU

3. powered ODB through ECU(isuzu hombrei)

4. found wiring structure of CANbus shield

5. prepared for the Project day presentation

Problems
Could not find the exact schematic diagram of Jetta 2003 1.8t

ECU

 * | ECU jetta number

ECU wiring table

 * | ECU wiring table of Jetta 1.8t 2003

CAnbus shield circuit

 * | CANbus shield structure


 * | CANbus shield working example

CANbus in a "recovery node" in a parachute. Its working is shown in this article.
 * | CANbus in recovery node in parachute

Appartaus
ECU (isuzu hombrei), ODB scanner, Arduinos, CANbus shields and walmart charger.

Procedure
1.Connected orange wires (power wires) and black wires(ground wires) of ODB scanner and ECU in Vin and Ground of CANbus shield- arduino structure respectively, and connected a walmart charger to an arduino.

2.The ODB scaner was powered on, and now went to the "ISUZU HOMBREI" in main menu and started the diagnostic test.

3.Later on, we disconnected the ECU for 10 seconds and then plugged back in after 10 seconds.

Result
1.As soon we pluged out the orange wire from Vin; the ODB scanner was powered off.

2. After disconnecting only the ECU for 10 seconds and connecting it back again, we pressed the "diagnostic test", the ODB scanner remained powered onn and although the error was similar bt it took a much longer time.

video of the experiment

 * | complete video of powering ODB with addition of ECU


 * | short video of the experiment

NExt steps
1. Find the schematic diagram of ECU

2. replace the "Hombrei" ECU with VW jetta 1.8 ECU in all the experiments.

3. Figure out CANbus in "seat belt system" in a seat bought from the auto part store

4. Connect the CANbus arduino shield structure to ECU and also to the seat belt system

5. If it works, then change the coding of the seat belt system and try hacking into it.

week 5 narrative
1. Looked through DARPA files about specifics of transmission etc.

2. Developed theory of operation for CANbus.

3. searched for CANbus in college.

4. Found the ECU name and its manufacturing company

5. searched its schematic wiring

6. Got and Fixed the new CANbus shields.

Problems
1. could not find the exact wiring schematics for ECU of Jetta 1.8 2003

Next steps
1. Find the language of CANbus connector

2. Connect the ECU with CANbus shield-arduino structure and the ODB scanner.

3. Connect window viper and the seat with CANbus shield- Arduino structure.