что за блочок?

[ejen]

Сообщение от борт13

просвятите что за приблуда на XJ 1990 4L AW4 242
1. прозрачный коробок, внутри шестерёнки и схема.
56002460 emissions maintenance timer
2. 56000636 Module, twilight sentinel
для чего нужны ?

1.срабатывает по пробегу 80тым, зажигает лампу с намеком заменить кислородник, скотолизатор...напоминалка об обязательном ТО (для Калифорнии ибо не на всех встречается ) на системах с Реникс.
Emission Timer Relay OEM Cherokee & Comanche 1988-1990
This is a Factory Original part. This is the Emission Timer Box Relay.This will cause the Emission light to come on the dash and will need to be replaced when this happens. This will fit all Jeep Cherokee & Comanches & Wagoneers From 1988-1990 With The 2.5 & 4.0 Liter Engines

2.оч похоже на на таймер включения головного света. с наступлением сумерек

Twilight Sentinel was introduced in the 60's by GM. It automatically turns on headlamps in low light conditions such as dark parking garages and at dusk, turning them off when it senses daylight. Newer versions are connected to the RainSense automatic windshield wipers and will automatically turn on the headlamps when the wipers are on (now a law in some states)

The twilight sentinel is a slide switch that lets you control how long your headlights will stay on after you turn the engine off. This allows you to have lights while you are getting out of the car. This is useful if you park in a dark garage and avoids stumbling around.

http://www.youtube.com/watch?v=nAmFv2ezcEw