What are the reliability testing items for automotive electronics?

Automotive electronic components are the guarantee for ensuring the safe and reliable operation of vehicle electronic systems under various environmental and usage conditions, and their reliability testing is of vital importance. By verifying the performance of key functions such as brakes, airbags, entertainment and communication systems, the overall vehicle safety and user experience can be improved. Reliability testing helps to reduce the failure rate of the entire vehicle, cut down maintenance costs, and at the same time safeguard the brand reputation of automobile manufacturers, providing consumers with reliable means of transportation.

Main testing items:

·Power supply condition testing: Jump start, reverse polarity, overvoltage, power interruption, battery voltage drop, sinusoidal superimposed voltage, pulse superimposed voltage, power supply offset, overload, voltage transient change.

·Electrical characteristic testing: Ripple characteristics during state change, quiescent current, intermittent short circuit between battery and ground, continuous short circuit between battery and ground, multi-line short circuit, open circuit – single wire interruption, open circuit – multi-wire interruption, ground offset, insulation resistance, ground inductance sensitivity.

·Signal and communication testing: Discrete digital input voltage, crank pulse, load dump.

Main testing standards:

·ISO 16750 Road vehicles – Environmental conditions and testing for electrical and electronic equipment
·ISO 20653 Road vehicles – Degrees of protection of electrical equipment against external objects, water and ingress
·GB/T 28046 Road vehicles – Determination of power consumption of mass transport vehicles
·GB/T 30038 Road vehicles – Energy consumption label
·GMW 3172 General Motors Global Standard – Component environmental testing