I am having a difficult time with this one this is a 97 Land Rover Defender 90 , I have a fault code P1317 that is the rough road signal did all the tests for continuity found all the wires from connector C636 to C501 to be intact etc.
The Service Reminder Unit is not behind the binicle, neither in the r/h front kick panel.
I also checked the wiring diagram and the wire that powers the service engine light comes from the engine control unit.
The service engine light remains on!!!
Any sugestions?|||Check that all the abs sensors have no debris on them, are seated properly and the sensor retainers are lubricated and tight. Wabco uses a special gray grease to ensure that there is no corrosion between the copper sensor bushing and the sensor.
You will have to check that all of the sensors display the same speed. If not replace the incorrect sensor. Incorrect readings can be cause by poor connections. Check resistance and voltage readings on a DVOM.|||you may have already, come across some of your problem. Your service light has an amber colored lens, which means, the problem in not to urgent yet. I beleive Rovers like most Cadalacks, have level ride systems, with air bag suspensions. They adjust the air bag pressure, for smooth rides.
You may heve a small air leak or some thing else related to your air ride suspension.
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