I have looked into my v70 manual, to check why a light on the dashboard turned on. according to the manual, the light means "fault in the electronic system". can someone explain what this means? why it's on? when it's on? what does it mean? how can i figure out the problem? thanks.
SOURCE: Electronic Ignition Fault Light On
It is probably due to a faulty sensor somewhere, but without proper diagnostic equipment it is virtually impossible to tell which one.
A modern fuel injected engine will have sensors to monitor throttle position, manifold pressure, coolant temperature, air temperature, crank speed, camshaft position, exhaust gas oxygen, pre-ignition, etc, etc, etc.
Diagnostic equipment will be able to read the fault code from the vehicles computer and tell you where the fault lies.
The light cannot be reset manually. It will go out once the fault has been rectified.
Hope this helps!
SOURCE: 2002 Volvo V70 automatic - emmison system light
This is probably a faulty Throttle Position Sensor - I had exactly the same problem.
Vovlo specialist hooked my ODBII to a code reader.
Best to get the throttle body cleaned at the same time they replace the TPS
All in £125 plus the dreaded VAT.
Hope this helps
SOURCE: '01 V70 T5 throwing Fault
Volvo Recall #181: Fuel Pressure Gauge. So a bad pressure reading causing error codes. Volvo will replace it free of charge.
SOURCE: what does SRS means? it is lighted in my dashboard
Here's a quick check list
for most common cost of SRS / Air bag problem.
Dirty contacts on driver
and passenger seat belt buckles
Dirty contacts on seat belt connectors
(under seats)
Dirty contacts on driver and passenger sides weight
sensors (under seat)
Seat covers
Weight on passenger seat
(Example:
grocery package trigger SRS / Air Bag light on the way home.)
I
recommend you to pass an vacuum over the contacts and use CRC
electronic parts cleaner to rule out connectivity problem.
I DO NOT
recommend disconnecting the negative battery connector to clean the code(s).
Without the code(s) the dealer will takes "BILLABLE" time to reproduce
the problem.
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Please rate my answer if it is useful to you.
Cheers,
Mustgo
Whenever this warning light or any
other stays on in the dash it is indicating that the systems control
module (or the system sensor in the case of lights like low oil
pressure, door open indicators etc.) has detected a fault, it then
disables the system (this applies to ABS,TCS, TCM, SRS, TPMS, MIL,
CEL and BCM faults and others) as long as the light is on. You must
now have the dealer hook up a special electronic diagnostic tool and
"scan" the system for the fault code that is stored for the
problem(s)
Legend of Abbreviations. ABS Anti-lock brake system. TCS Traction control system, TCM Transmission control module, SRS Supplemental restraint system, BCM Body control module. TPMS Tire Pressure Monitor System, MIL Malfunction Indicator Lamp, CEL Check Engine Light.
Whenever
this warning light or any other stays on in the dash it is indicating
that the systems control module (or the system sensor in the case of
lights like low oil pressure, door open indicators etc.) has detected
a fault, it then disables the system (this applies to ABS,TCS, TCM,
SRS and BCM faults and others) as long as the light is on. You must
now have the dealer hook up a special electronic diagnostic tool and
"scan" the system for the fault code that is stored for the
problem(s)
Legend of Abbreviations. ABS Antilock brake system.TCS Traction control system, TCM Transmission control module, SRS Supplemental restraint system, BCM Body control module
The information below was complied by me, it explains what causes the check engine light to come on and the process of finding the cause.
When the Check Engine light (or Service Engine Soon) is turned on, the systems computer control unit (called the PCM) has sensed a fault in the electronic controls of the engine and/or the emission system. When this happens you will seldom feel the car engine run any different. There are about 200 possible system faults (the gas cap is just one of them) that turn the Check Engine light on, to know what has developed a problem you must have the system tested, this is called an OBD2 fault code test, Kragen/Oriley and Autozone parts stores (USA only) do this testing for free.
The information below was complied by me, it explains what causes the check engine light to come on and the process of finding the cause.
When the Check Engine light is turned on the computer control unit (called the PCM) has sensed a fault in the electronic controls of the engine and/or the emission system. When this happens you will seldom feel the car engine run any different. There are about 200 possible faults that can occur in the system that turn the Check Engine light on, a leaking gas cap is just one of them. To know what has developed a problem you must have the system tested, this is called an OBD2 fault code test, Kragen and Autozone parts stores do this testing for free.
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