WS5 Scan Tool Diagnostics

WS5 Scan Toll Diagnostics



I had used my car for scanning in workshop 

It is Toyota Vista 1999

Conecter for scan tool in vehecle under steering in dash board.

Type of information PID=Parameter Identification	Letter to Describe it E.G TPS	Valve of data	Units for Data E.G volts
Engine load (how much air comes in)	IAT	29.9%	Percentage %
Engine RPM	RPM	982 RPM	RPM
Throttle angle	TPS	13.6%	degree
Engine Coolant temperature	ECT	55 c	degree
Intake air temperature	IAT	23c	degree
Fuel injector opening pulse	PWM	0.9 s	Mille seconds
Transmit ion select position	TSP	0
Vehicle speed		0 km	KM
Oxygen sensor	O2	0.775v	volts
Fuel term	FTFT	Short fuel term -18.0% Long fulel term -3.2%	Parentage%
Idle control	Id	on
Power steering condition	PS	on
Air conditioning condition	AC	On/off
Exhaust Gas recirculation	EGR	Zero step

Fuel Evap or purge
conditin                                   off
Malfunction indicator
light                                         off

Live data on scan tool engine run at idle recording up chart.


2. Trouble Codes or Faults Codes
I cold not find any trouble codes in this scanning

The scan tool show in this picture no trouble code.


Now i,m going to disconnect on of the sensor then lets see what scan tool tell us.

I disconnected the engine coolant temperature sensor lets see in next step what scan tool tell us.

Now i found the fault code and recorded in chart below.

Code number	System affected	Condition described
PO115	Engine Coolant Temperature sensor	The coolant fan on full time

Find What Data Has Changed
5.1 Look through the scan tool data to see what PIDs
(Parameter Identification of system voltages) have changed.
Which readings don’t make sense or don’t read what you
would expect. Concentrate on the PIDs related to the codes.
5.2 Record the PIDs that have changed below

Type of information (PID= Parameter identification	Letter to describe it	Valve of data	Units for data
Fuel injector	FI	1 ms	ms
Short fuel term	FTSFT	-0.7%	%
Coolant temperature	ECT	-40 c	C

Visual Inspection to find fault
6.1 Do a visual inspection under the hood to find where the
problem is. Use information from the code to know where to
look for the problem and what type of problem to look for.
Describe problem you found
Yes , the Coolant Temperature senor is disconnected.

Repair fault
7.1 Plug back in the connector, or repair problem found
7.2 Describe what you did
Reconnected the the senor 



Recheck Data PIDs
8.1 Recheck the data with the scan tool
8.2 Record the voltages for the PIDs related to the problem, to
confirm they are back to normal

Type of information (PID= Parameter identification	Letter to describe it	Valve of data	Units for data
Fuel injector	FI	0.8	ms
Short fuel term	FTSFT	-3.2	%
Coolant temperature	ECT	86 c degrre	C

9 Clear Codes
Describe what you did to clear codes:


I have cleared the faults code po11 which is the coolant temperature sensor, also the coolant fan referred to normal on/off position automatically where it was full time on when the coolant temperature was disconnected.
10 Recheck for codes and record codes in system now:
I have erase the fault code and check again with scan tool there is no trouble code.

We can see on dash board there is flashing any light means no trouble code , i toke this picture after erased ttruble code.


11 Discuss the importance live data when fault finding.
The live data is very important we find a lot of problem , the live data shows us fuel long, short tirm ,signal out of sensors in different condition of engine like different RPM .
for example engine urning rich or lean , output signal of all sensors , battery voltage, other devices like AC, power sterring condition , and other electric faults , but it is very important we have to know abut the all of these component .  For example how much is output voltage of TPS in different throotlle angle and how is the O2 sensor signal output and how related with each other then we can find easy the problem. I think this is very useful tool in automotive industry .


13 Discuss how a scan tool can aid you when fault finding
The scan tool is very helpul tool to find the problem, the faults code just tells us that sensor or that seloniod or that that circuit short or groding , they just give us the fault code number or tell us the problem .
After that we find the problem we need to check that componint with visual test test with other tester like multimeter or other testet equamponit then we can deside whats wrong, any way we can find with this tool very quick the promlem in short time, and also know the fault code number if we have no idea we should follow the manufacture data sheet . 


At below the video we can watch how i set the scan tool to find the fault cod in my car.