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ASEtech, ASE Certified Technician
Category: Car
Satisfied Customers: 553
Experience:  Air, Electrical, Drivetrain, Computer, Drivabuility, Brakes, Suspension, Performance.
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2007 isuzu ascender: left turn signal..Bulbs..fuses..same problem

Resolved Question:

2007 isuzu ascender. left turn signal does not work. Bulbs are fine, fuses are fine, replaced entire signal switch, still same problem. Signal works first thing in the morning than quits.
Submitted: 8 years ago.
Category: Car
Expert:  ASEtech replied 8 years ago.
Thanks for choosing just answer.

First you should duplicate the problem.

Drive the car until the signal stopps working
then use a test light to test power from thebatter to the fuse box, to the switch, to the relay, through all connections, and finally to the sockets.

If there is a computer in the circuit you must make sure that the computer is properly grounded, include this as you trace the circuit in order from the battery to the bulbs.

You cant miss if you follow theese instructions. If you need a diagahm and instructions follow this link.

Thnks so much

ASEtech and 8 other Car Specialists are ready to help you

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