Scan tool Diagnostics (WS5)

Scan Tool Diagnostics

We did testing on a 2004 Honda Accord.

Type of information	Letters to decribe	Value of data	Unit for data
Engine RPM	RPM	793	RPM
Engine Coolant temperature	ECT	91	C
Intake air temperature	IAT	65	C
Fuel Injection opining pulse	FI	2.41	ms
Vehicle Speed	VS	0	Km
Oxygen Sensors(S)	O2 (S)	0.6	V
Fuel Tim	Short long	1.02 0.99	%
Power Steering		0.05	V
Idle control	Ic	On
Air conditioning condition	A/C	On/off	C
Exhaust Gas Recirculation	EGR	0	lef
Fuel Evap or purge condition		no	%
Malfunction Indicatr light	MIL	YES
Bometric Pressure	Bp	8.5	Hz

There was no codes.

The lectures put in a code. The code showed up in the scan tool as throttle  position sensor no values.

We visually inspected the engine bay and found the TPS sensor connector unplugged. We then replugged the connector nad cleared the codes by the clear codes feature in the scan tool. We re checked for codes and no codes were shown.

Live data is very important at fault finding as sometimes there are no codes shown up on the scan tool but there still might be a problem. Or sometimes there may be a list of codes showing up on the scan tool that may lead to a different finding when looked at live data. example a grounding problem which all sensor codes showing up because of using the same grounding wire. With live data you can analyze and come up to conclusions for repairs. Live data should be compared to manufactures specifications or parameters. Live data should be within specs

Scan tools just makes life easier and give indications to where the problem is and then you can use live data to come to accuate conclusions of the problem. Other expensive scan tools have built in oscilloscopes where you can see patterns which are very useful in fault finding.