Honda Multiplexing Board Worksheet
This multiplex system was used for body controlled functions on 1996 to 2002 Honda
accord and 1996 onward prelude. It utilises three nodes (control units) drivers door,drivers
side and passenger side.The testing procedure is divided in to three sections
Communication lines and nodes from mode 1,inputs from mode 2. If the system passes
these tests from mode 1 and 2, but is still faulty the problem is likely to be an output.
1: Using the wiring diagram identify the plugs/ pins and wire colours for the communication
lines between the nodes.
Door . Brown A15-A2
Passengers. Pink B1-B9
2: Using the wiring diagram identify the plugs/ pins and wire colours for the Earths and
voltage supply lines between the nodes.
The blacks wires are all earthed.
Power is Pink wire A1 to the Door
Door - A12 to Ground G401 , A19 to ground G551 (LHD) , and to G581 (RHD)
B22 to Ground
Passenger -A24 Pink wire and Yellow A22
A8 to G401
3: Ask your instructor to create a fault in the unit
Describe in detail how this fault is affecting the normal operation of this system
The drivers side rear door light wasnt working , so when the door is open it wouldnt light up like the rest
4: Using the wiring diagram analyze the fault and describe in detail what may be causing
this fault.
It could be that the grounding is bad , or the wire being broken also there could be a break from the multiplex to the rear door switch
5: After reading the manual put the system in to test mode 1. Note the codes (if any) and
possible faults that the system gives you.
There were no codes
6: Do the codes concur with what you thought the problem might be from question 4,
6: Do the codes concur with what you thought the problem might be from question 4,
explain.
There are no codes coming up
7: Go to step 5, can you conduct this test? Why /why not.
7: Go to step 5, can you conduct this test? Why /why not.
Yes , all the communacation lines were good
8: Conduct the tests in step 6, what is your results and conclusions.
8: Conduct the tests in step 6, what is your results and conclusions.
Communication line
Door- Drivers , Brown wire was good , it was 5.2v and with the spacification of 3.5-9.5v
Drivers passenger side , pink wire was also good and was 5.2v aswel within the spec of 3-10v
9: Put the system in to diagnostic Mode 2, conduct the input tests and note the results.
We just turned the ignition on to wake up the system
On your capture also identify were the data pattern starts and finishes
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 right hand indicator is connected to pin 7 , it goes to a resistor R5 then goes into the chip 18F258 in pinout 6 , RA4/TOCKI. It then comes out from RB2/CANTx pin 23 and Rb3/CANRX pin 24 . CAN-H comes out of pin 7 to chanel 1 and can low to pin 6 to channel 2. Then comes out of pin 4 & 5 to chip IC5-UC335ON . 7 Can H and 6 Can L goes into the input pin 13 TXCAN and 4 to 12 RxCAN then comes out from GP4/REF 5 to a 1k Resistor R32 then goes to a opticoupler IC9 then to a pull donw resistor on its way to the transistor and then goes to the output connector 5 which is right hand indicator.
Fill in the blanks with the name of the part:
1 = Brake Rotor 6 = Brake Assembly
2 = Wheels sensor 7 = Brake Booster
3 = Tooth Ring
4 = Hydrolic module
5 = Master Cylinder
Wiring Diagram Practice
There are a number of components in the ABS systems that are also used for fuel injection. These
are mostly speed sensors e.g. wheel speed and engine speed.
Using the wiring diagram in the workshop manuals identify the wheel speed sensors and list their
wire colours for each sensor
Front right Green 23a Red 22a
Front left White 9a Black 10a
Rear left Blue 3b Pink 2B
Rear right Yellow 8b Brown 9b
On the ABS wheel sensor what is the reason for the braded wire?
To reduce noise and also stop interferance from other signals
Identify and list all the fuses that are used by the ABS circuit
FL Main, F14 50A ABS, 10A gauge, 20A DONE, 15A STOP and 15A ECU-IG
Identify the earths for the ABS control unit and ABS motor their wire colours what pins numbers
Abs Motor - IA white and Black
On the wiring diagram for the ABS actuator, identify which solenoids control which wheel cylinder.
Then note the wire colours and pin numbers
Front Right Wheel
Pin number: 2B, 6B
Wire colour: Red/White , Red/Green
Front Left Wheel
Pin number: 3B/7B
Wire colour:Blue/Red , Blue/White
Rear Left Wheel
Pin number: 4B,8B
Wire colour: Green/Black , Green/Yellow
Rear Right Wheel
Pin number: 1B,5B
Wire colour:Brown/White , Brown/Red
On the graph below draw a digital signal that switches 5 volts every 2 seconds.
Mark volt and time scales on graph that will show the signal well.
On the graph below draw an analogue signal with a frequency of 0.5 Hz and a maximum of +3
volts. Mark volt and time scales on graph that will show the signal well.
ABS Demonstrators
We tested ABS from a 1992 Open Vtectra
Locate the wiring diagram for your demonstrator vehicle. Find the ABS wheel speed sensor pinout
connections to the ECU on the wiring diagram and the demonstrator. Record which ECU wires
go to which wheel speed sensors:
Left front ECU Pin # (B19) 4 and 5
Left rear ECU Pin # (B21) 7 and 9
Right front ECU Pin # (B20) 11 and 21
Right rear ECU Pin # (B22) 24 and 26
By looking at the wiring diagram, what type of speed sensor is this?
Magnetic pick up sensor
Describe how it works:
When the rotor is spinning , the teeth sends out a magnetic feild to the abs module to see if all the wheels are at the same speed.
Locate an oscilloscope. Turn it on and set it up to be fully operational. What oscilloscope are you
using? Seintek S2800 Automotive scope
Which wheel is this? Left Front . #9 Ecu pin 5
Which wheel is this? Left rear . #7 Ecu pin 7
Which wheel is this? Right Front. #8 Ecu pin 11 . ( high voltage , could be corrosion)
Which wheel is this? Right Rear. #6 ECU pin 24
Are all the waveforms exactly the same? Yes ____ No ✓ Discuss what are the differences,
and what can cause these differences between the waveforms:
The right front wheel speed sensor was giving a higher voltage reading than the rest. This could be that there is some corrosion on it or its to close to the rotor
With the wheel speed sensors spinning, measure AC volts with a multi-meter and record here:
Left front 5.44v
Left rear 4.30v
Right front 16.48v
Right rear 6.29v
Can a multi-meter be as accurate in finding problems with the wheel speed sensors as an
oscilloscope? Yes ✓ No ____
Discuss what the oscilloscope could find that the multi-meter can not find and why:
The Oscilloscope shows the spinning of the teeth. You can see the waveforms
ABS Relays
Record the name of the relay or switch that powers up the ABS ECU: (look at the wiring diagram)
K39. Protection Relay
Record the name of the relay or switch that powers up the ABS pump: (look at the wiring diagram)
K100. Pump motor Relay
Record the name of the relay or switch that sends power to the ABS HCU solenoids: (look at the
wiring diagram)
Relay wire identification: (Consult the wiring diagram)
What is the ECU pin number for the wire that brings in the power to the ABS ECU?
S13. Brake Pedal Position Switch
What is the ECU pin number, or other number, for the wire that controls the relay for the ABS
ECU?
Pin 1
What is the pin number for the wire that brings in the power to the ABS Pump?
Pin 14
What is the pin number, or other number, for the wire that controls the relay for the ABS Pump?
Pin 28
Relay waveform: Capture a waveform that shows both the control circuit change when it turns on
the relay, and the power switching on to power something in the ABS system. (Use an oscilloscope
with two channels to capture this pattern. You may have to carefully set the trigger to capture this.)
Record the waveform below with the time and volts per division, and explain what you are
measuring.
Explain with arrows what is happening in the waveform above.
The top line is the switch and the relay is the bottom line.
ABS Pump Relay waveform: Capture a waveform that shows both the control circuit change
when it turns on the relay, and the power switching on to power the ABS Pump. (Use a oscilloscope
with two channels to capture this pattern. You may have to carefully set the trigger to capture this.)
Record the waveform below with the time and volts per division.
Explain with arrows what is happening in the waveform above.
Tutor wrote it on the board for us
On vehicle testing:
LIFTING & SUPPORTING VEHICLES
To safely lift and support a motor vehicle on a flat surface
Vehicle : Daihatsu Model: YRV
Ensure the floor surface is clean and flat
Apply the parking brake; slacken wheel nuts of wheels to be removed
Identify a safe vehicle chassis member to lift the vehicle using the jack
Lift the jack until it is touching the chassis member
Release the parking brake to allow the vehicle to roll while lifting
\recheck the location of the jack before lifting the wheels off the ground
Locate axle stands in a safe position on solid vehicle member
Have your tutor check before lowering the jack
Lower the jack slowly until the vehicle is supported by the stands
To safely lower the vehicle to the ground after being supported on axle stands:
Ensure all wheels and nuts are located before removing vehicle stands
Lower the vehicle gently to the floor
Apply parking brake
Torque and check wheel nut tightness
On-Car Exercises
On the vehicle that you have been assigned identify the following components to your tutor:
Wheel speed sensor✓
ABS control unit✓
ABS modulator✓
ABS pump motor✓
Parking brake switch✓
Brake master cylinder✓
Brake fluid level switch (if fitted)✓
RPM sensor✓
Foot brake switch✓
Brake booster✓
Main ABS control unit fuse
Instructor OK? ✓
ABS Wheel Speed Sensors
On the vehicle that you have been assigned does it use analogue or digital wheel sensors?
It was Anolouge
How did you conclude that the wheel sensors were analogue or digital?
Anologue , Because the tooth of the ring
Using an oscilloscope connect it to a wheel sensor and record the pattern shown, If the sensor is a
Analogue sensor then just connect then probe and spin the wheel. If the sensor is digital you will
need to have the ignition on before you turn the wheels. (show scale)
Is this pattern an analogue or digital pattern?
Analougue
PCM = Powertrain Control Module
TCC = Torque Converter Clutch
TPS = Throttle Position Sensor
ECT = Engine Coolant Temperature Sensor
VSS = Vehicle Speed Sensor
PSA = Powertrain Control Module
TTS = Transmission Temperature Sensor.
On-Car Exercises
Which vehicle are you using: Mitsubishi lancer Wagon 2008
2.2 With the vehicle safely on jack stands or a lift (use the proper worksheet for that), safely drive
the vehicle to allow it to shift up and down through the gears. View the solenoids as the vehicle
shifts up and down. Record which solenoids are on in which gears:
With the shift lever in Drive or Overdrive:
First gear solenoids: 2nd OD
Second gear solenoids: LR OD
Third gear solenoids: 2nd LR
Fourth gear solenoids: UD LR
View the Torque Converter Clutch as you safely drive the vehicle. Record when it is on or off:
Torque Converter Clutch On:
The solenoids turn on at a higher gear
Torque Converter Clutch Off:
When you slow down the solenoid will turn off
We just turned the ignition on to wake up the system
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
Top one is L-CAN and the Bottom is H-CAN | |
On your capture also identify were the data pattern starts and finishes
Describe the relationship between the two patterns and their base voltages (what volts when not switched)
They mirror each other if one goes up the other will go down and vise versaFor each of the following inputs capture the pattern and identify were it changes in relation to the original pattern:
Right indicator
Left indicator
Rear wiper
Stoplights
Fuel pump
Reverse lights
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 rear wiper is on Pin 9 which goes to a Resistor (R8)then pin 25, RB4 on chip VP18F258 then comes out of RB32/CANTX pin 23 & RB/CANTX pin 24 then to pin ! TXP and 4 RXD on the chip IC4 then it comes out from Can H & Can L on pin 6 to the standard termination to the Can Connector 1 & 2 then output is from 4 & 5 which goes out to 7 & 6 Can H and Can L then comes out TXDI1 & RXD pin 4 then goes into the cip IC5 . 13 TXCAN & 12 RXCAN , out pin 10 , GP6/CLKOUT to a resistor R35 K then to a transistor to the ase. Emitor goes to ground and the collector goes to the relay then 7 on the output connector .
TXD- Transmit
RXD - Receive
Using the wiring diagram identify both voltage regulators that resemble the one that you built in TTEC4824. Note all the input pins and were the outputs are connected to
U1 7805: Input from supply from pin 1 & 2 , output goes to pin 1 & 20 on chip VP18F258 and pin 3 in IC4 Chip. One to 16 on chip IC3.U2 7805 - Input from 12v pin 1 & 2, output in pin 14 vdd
1.3 Record the waveform of one of the wires below: (Make sure your time is small enough so you don’t have “aliasing”.)
Bottom line in the picture
(http://www.wfu.edu/~matthews/misc/DigPhotog/alias/)
Off-car Exercises
Think about ABS Repair:
Misconceptions, The ABS system should be simple and robust, with the Module/ECU/Controller
almost never giving any trouble.
Below are some possible causes for damaging an ECU.
• Spiked by careless welding, i.e. MIG welding without disconnecting the battery. True/False
• Enclosure seal damaged and with obvious sign of water ingress.
True/False
• Obvious signs of mechanical damage to the enclosure.
True/False
Often the ECU will be misdiagnosed as faulty, usually because the technician is inexperienced in
faultfinding.
• Faults are much more likely to be with connections or sensors.
True/False
ABS Wiring and Operation
Using the wiring diagram follow one circuit though from the input to the output. Note all the inputs/IC/relays/transistors and describe how the circuit operates
I did the fuel pump on pin 8 which goes to a resistor (R6) then to pin 7 RA5/AN4/SS on the chip (VP18F258) then comes out of RB2/CANTx pin 23 & Rb3/ CANTX pin 24 then to pin1 TXD and 4 RXD on the chip IC4 then out from CAN H 7 & CAN L pin 6 to the standard termination to the can connector 1 & 2 then comes out of 4 & 5 into 7 Can H and 6 Can L to the chips IC5 then comes out TXP1 to pin 13 , TXCAN then out to Gp3/ REF16 to R32 a 1k Resistor then to a transistor then a relay to output 6 that is the fuel pumpCAN – Multiplexing Worksheet
1.0 CAN Waveform on Oscilloscope
1.1 Locate the Range Rover or other suitable vehicle with easily accessible CAN system twisted wires. Which vehicle do you have? (Year, make and model) Range Rover , 2001 . V8 Rouge
1.2 Locate a twisted wire pair. Describe where the wires are located: It was located near the Abs Module
The top line on the picture
Colour of wire: Yellow/Brown
Time per division: 10ms
Voltage per division: 2v
1.4 Record the waveform of the other wire in the twisted pair.
Colour of wire: Yellow/Black wire
Time per division: 10ms
Voltage per division: 2v
1.5 What is aliasing? Describe it.
Aliasing happens when a signal is taken at a less then twice the highest frequency present in the signal. 1.6 How do you know these waveforms are not “aliasing”?
When you look at the graph and see the wave form it is not aliasing
1.7 In the 1.3 waveform above, what is the main voltage on the line?
2.37v
What is the other voltage on the line, when the voltage is pulled up or down to “talk” ?
1.7v
1.8 In the 1.4 waveform above, what is the main voltage on the line?
2.64
What is the voltage on the line, when the voltage is pulled up or down to “talk”?
Pulled up 4v
1.9 Observe the signals in 1.3 and 1.4 above with a voltmeter. Compare it with DC volts or AC volts setting. Which setting would tell you if the signal is switching. Explain:
You can see the signals switching , the means the Ac voltes are pulled up & down
You can see the signals switching , the means the Ac voltes are pulled up & down
2.0 Scan Tool Observations
2.1 Find a vehicle that will show CAN system operation on a scan tool (such as the Range Rover.
Which vehicle are you using? Land Rover
Which scan tool are you using? AutoBoss
2.2 What different functions are available on the scan tool to examine the CAN system?
The scan tool can show you all the faults
The scan tool can show you all the faults
2.3 List the different systems that are controlled by CAN? (note which are high speed and which are low speed)
Low Speed : High Speed :
Wipers , Window Sprayer Indicators Brake Switch, ESP,ABS,Fuel pump, Radio
Wipers , Window Sprayer Indicators Brake Switch, ESP,ABS,Fuel pump, Radio
Antilock Braking Systems Lab Workbook (4825)
Off-car Exercises
Think about ABS Repair:
Misconceptions, The ABS system should be simple and robust, with the Module/ECU/Controller
almost never giving any trouble.
Below are some possible causes for damaging an ECU.
• Spiked by careless welding, i.e. MIG welding without disconnecting the battery. True/False
• Enclosure seal damaged and with obvious sign of water ingress.
True/False
• Obvious signs of mechanical damage to the enclosure.
True/False
Often the ECU will be misdiagnosed as faulty, usually because the technician is inexperienced in
faultfinding.
• Faults are much more likely to be with connections or sensors.
True/False
ABS Wiring and Operation
Fill in the blanks with the name of the part:
1 = Brake Rotor 6 = Brake Assembly
2 = Wheels sensor 7 = Brake Booster
3 = Tooth Ring
4 = Hydrolic module
5 = Master Cylinder
Wiring Diagram Practice
There are a number of components in the ABS systems that are also used for fuel injection. These
are mostly speed sensors e.g. wheel speed and engine speed.
Using the wiring diagram in the workshop manuals identify the wheel speed sensors and list their
wire colours for each sensor
Front right Green 23a Red 22a
Front left White 9a Black 10a
Rear left Blue 3b Pink 2B
Rear right Yellow 8b Brown 9b
On the ABS wheel sensor what is the reason for the braded wire?
To reduce noise and also stop interferance from other signals
Identify and list all the fuses that are used by the ABS circuit
FL Main, F14 50A ABS, 10A gauge, 20A DONE, 15A STOP and 15A ECU-IG
Identify the earths for the ABS control unit and ABS motor their wire colours what pins numbers
Abs Motor - IA white and Black
Abs Ecu - 10B & 7B white & Black
On the wiring diagram for the ABS actuator, identify which solenoids control which wheel cylinder.
Then note the wire colours and pin numbers
Front Right Wheel
Pin number: 2B, 6B
Wire colour: Red/White , Red/Green
Front Left Wheel
Pin number: 3B/7B
Wire colour:Blue/Red , Blue/White
Rear Left Wheel
Pin number: 4B,8B
Wire colour: Green/Black , Green/Yellow
Rear Right Wheel
Pin number: 1B,5B
Wire colour:Brown/White , Brown/Red
On the graph below draw a digital signal that switches 5 volts every 2 seconds.
Mark volt and time scales on graph that will show the signal well.
 |
| Bottom line is Zero Volts then goes up to 5 |
volts. Mark volt and time scales on graph that will show the signal well.
ABS Demonstrators
Locate the wiring diagram for your demonstrator vehicle. Find the ABS wheel speed sensor pinout
connections to the ECU on the wiring diagram and the demonstrator. Record which ECU wires
go to which wheel speed sensors:
Left front ECU Pin # (B19) 4 and 5
Left rear ECU Pin # (B21) 7 and 9
Right front ECU Pin # (B20) 11 and 21
Right rear ECU Pin # (B22) 24 and 26
By looking at the wiring diagram, what type of speed sensor is this?
Magnetic pick up sensor
Describe how it works:
When the rotor is spinning , the teeth sends out a magnetic feild to the abs module to see if all the wheels are at the same speed.
Locate an oscilloscope. Turn it on and set it up to be fully operational. What oscilloscope are you
using? Seintek S2800 Automotive scope
Which wheel is this? Left Front . #9 Ecu pin 5
Which wheel is this? Left rear . #7 Ecu pin 7
Which wheel is this? Right Front. #8 Ecu pin 11 . ( high voltage , could be corrosion)
Which wheel is this? Right Rear. #6 ECU pin 24
Are all the waveforms exactly the same? Yes ____ No ✓ Discuss what are the differences,
and what can cause these differences between the waveforms:
The right front wheel speed sensor was giving a higher voltage reading than the rest. This could be that there is some corrosion on it or its to close to the rotor
With the wheel speed sensors spinning, measure AC volts with a multi-meter and record here:
Left front 5.44v
Left rear 4.30v
Right front 16.48v
Right rear 6.29v
Can a multi-meter be as accurate in finding problems with the wheel speed sensors as an
oscilloscope? Yes ✓ No ____
Discuss what the oscilloscope could find that the multi-meter can not find and why:
ABS Relays
Record the name of the relay or switch that powers up the ABS ECU: (look at the wiring diagram)
K39. Protection Relay
Record the name of the relay or switch that powers up the ABS pump: (look at the wiring diagram)
K100. Pump motor Relay
Record the name of the relay or switch that sends power to the ABS HCU solenoids: (look at the
wiring diagram)
Relay wire identification: (Consult the wiring diagram)
What is the ECU pin number for the wire that brings in the power to the ABS ECU?
S13. Brake Pedal Position Switch
What is the ECU pin number, or other number, for the wire that controls the relay for the ABS
ECU?
Pin 1
What is the pin number for the wire that brings in the power to the ABS Pump?
Pin 14
What is the pin number, or other number, for the wire that controls the relay for the ABS Pump?
Pin 28
Relay waveform: Capture a waveform that shows both the control circuit change when it turns on
the relay, and the power switching on to power something in the ABS system. (Use an oscilloscope
with two channels to capture this pattern. You may have to carefully set the trigger to capture this.)
Record the waveform below with the time and volts per division, and explain what you are
measuring.
Explain with arrows what is happening in the waveform above.
The top line is the switch and the relay is the bottom line.
ABS Pump Relay waveform: Capture a waveform that shows both the control circuit change
when it turns on the relay, and the power switching on to power the ABS Pump. (Use a oscilloscope
with two channels to capture this pattern. You may have to carefully set the trigger to capture this.)
Record the waveform below with the time and volts per division.
Explain with arrows what is happening in the waveform above.
Tutor wrote it on the board for us
On vehicle testing:
LIFTING & SUPPORTING VEHICLES
To safely lift and support a motor vehicle on a flat surface
Vehicle : Daihatsu Model: YRV
Ensure the floor surface is clean and flat
Apply the parking brake; slacken wheel nuts of wheels to be removed
Identify a safe vehicle chassis member to lift the vehicle using the jack
Lift the jack until it is touching the chassis member
Release the parking brake to allow the vehicle to roll while lifting
\recheck the location of the jack before lifting the wheels off the ground
Locate axle stands in a safe position on solid vehicle member
Have your tutor check before lowering the jack
Lower the jack slowly until the vehicle is supported by the stands
To safely lower the vehicle to the ground after being supported on axle stands:
Ensure all wheels and nuts are located before removing vehicle stands
Lower the vehicle gently to the floor
Apply parking brake
Torque and check wheel nut tightness
On-Car Exercises
On the vehicle that you have been assigned identify the following components to your tutor:
Wheel speed sensor✓
ABS control unit✓
ABS modulator✓
ABS pump motor✓
Parking brake switch✓
Brake master cylinder✓
Brake fluid level switch (if fitted)✓
RPM sensor✓
Foot brake switch✓
Brake booster✓
Main ABS control unit fuse
Instructor OK? ✓
ABS Wheel Speed Sensors
On the vehicle that you have been assigned does it use analogue or digital wheel sensors?
It was Anolouge
How did you conclude that the wheel sensors were analogue or digital?
Anologue , Because the tooth of the ring
Using an oscilloscope connect it to a wheel sensor and record the pattern shown, If the sensor is a
Analogue sensor then just connect then probe and spin the wheel. If the sensor is digital you will
need to have the ignition on before you turn the wheels. (show scale)
Is this pattern an analogue or digital pattern?
Analougue
PCM = Powertrain Control Module
TCC = Torque Converter Clutch
TPS = Throttle Position Sensor
ECT = Engine Coolant Temperature Sensor
VSS = Vehicle Speed Sensor
PSA = Powertrain Control Module
TTS = Transmission Temperature Sensor.
On-Car Exercises
First we Connect a Scan Tool to the car brang up the transmission information.
Which scan tool are you using: MultiScan p1Which vehicle are you using: Mitsubishi lancer Wagon 2008
2.2 With the vehicle safely on jack stands or a lift (use the proper worksheet for that), safely drive
the vehicle to allow it to shift up and down through the gears. View the solenoids as the vehicle
shifts up and down. Record which solenoids are on in which gears:
With the shift lever in Drive or Overdrive:
First gear solenoids: 2nd OD
Second gear solenoids: LR OD
Third gear solenoids: 2nd LR
Fourth gear solenoids: UD LR
View the Torque Converter Clutch as you safely drive the vehicle. Record when it is on or off:
Torque Converter Clutch On:
The solenoids turn on at a higher gear
Torque Converter Clutch Off:
When you slow down the solenoid will turn off
 |
| Picture Taken from google images |
10: Explain your results and conclusions, Does it concur with your diagnosis from question 4?
It is the input. The switch could be faulty as the rest work but drivers side rear doesnt . We tested all the communication lines and they were all ok
11: Using the wiring diagrams from the back of the manual describe what tests you would
11: Using the wiring diagrams from the back of the manual describe what tests you would
carry out now and what results you would expect. Note wire colours and pin/block
numbers.
A14 12: Put the system in to sleep mode and measure the time it takes and the parasitic draw,
Explain why this system is necessary.
4.03v
10 seconds
.66amps
.018amps Explain how this test could be used.
So far so good but not the best! You can definitely do way better than this. You need to add more info on each question, try and justify why you came up with that conclusion.
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