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International Automotive Technicians Network

Automotive Technical Theory Forum

Professional automotive forum for discussion of the theory of operation for any automotive system or component. Discussions include electrical and electronic theory, engine propulsion theory, fuel system theory, ignition systems theory, and much more. This forum is for experienced automotive repair professionals only, membership required.

Continue to the description of our next automotive discussion forum, the Technical Tips Forum.

Recent Automotive Discussions in the Automotive Technical Theory Forum

Xenon headlamp coming on slowly
06/19/2018 in the Technical Theory Forum
[Electrical: 09 Nissan Murano SL 3.5L] Just spit balling here. The complaint is the left Xeon comes on slowly. Customer already tried a Philips replacement bulb. I verified (quick) 12 on the power side (relay and fuse good) and 0 volt drop on the ground....
Mechanical causes of high maf readings
06/15/2018 in the Technical Theory Forum
Dirty maf sensors and engine issues such as vacuum leaks typically cause the maf to underreport airflow. Assuming the maf sensor and circuit are operating normally what sort of engine issues would cause higher than normal air flow readings? All I can come...
steering effort module(part of steering wheel)theory?
06/11/2018 in the Technical Theory Forum
hello fellow techs this vehicle was involved in a collision and now has u3000-19 and -96(internal fault in steering effort control module)along with u2001-92. based on all the test ive done, the secm is no good(pinpoint test j, k, and l) i asked alldata f...
Tire rotation maintenance reminder message
06/08/2018 in the Technical Theory Forum
[Electrical: 16 Nissan Pathfinder S 3.5L] Had a customer bring in the car about a month ago because of the tire rotation maintenance message coming on. Tried a bunch of things to try and reset the light but was unsuccessful. She took the car to the Nissa...
Mazda 3 cluster speed
05/28/2018 in the Technical Theory Forum
[Brakes: 08 Mazda 3 GS 2.0L] Hi Car came in for an alignment, but before putting it on the rack since it's a car we have never seen,we do an inspection, so the 2 front wheel bearing are loose and a ball joint So we have fix it we ''second'' quality (bran...

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