Electrical Repairs

8/2/2015

Various topics of electrically related repairs:

1. Volvo Turn Signals
   If your turn signals on your Volvo are inoperable one of these items may be the culprit.

   Start out by checking Maxi-Fuse #13 "40 Amp fuse", the flasher unit itself, fuse #67 "30Amp fuse" fuse #66 "30 Amp fuse", fuse #65 "20 Amp fuse" and finally fuse #64 "15 Amp fuse" and last but not least the bulbs if you have incandescent bulbs.

   • Volvo Hazard and Turn Signal Wiring Schematics
   • Volvo Stop Lamp Wiring Schematics
2. Batteries Draining Down
   If your experiencing problems with your batteries draining down the next few links might lead you to the source and solution of your problems.

   Note:
   A digital VOMmeter is used rather than analog meter (with needle).  For diagnosing automotive electrical systems a digital meter capable of displaying tenths of volts is required to analyze battery charge, voltage drops, etc.  Analog meters are not capable of the fine measurements (fractions of volts, etc.) that must be accurately measured.

   Parasitic Draw
   Key Off Battery Drain - Definition and Testing Procedure

   • Battery Drain - Parasitic Draw Testing
3. Defective Ignition Switches
   Several members have reported having problems with their batteries draining down and the cause was found to be Defective Ignition Switches.
4. Daytime Running Lights
   Having problems with your DRLs.
   • 6/20/2010 DRL Module
5. Volvo Turn Signal Issues
   • 3/14/2010 Volvo Turn Signal
   • 10/20/2010 Quick Fix For Volvo Turn Signals
6. Engine Won't Turn Off
   Your truck won't shut off unless you unhook your trailer
7. Window and Mirror Switch Problems
   • 2/20/2011Electric Mirror
8. Electrically Challenged
   For those who are electrically challenged, here is an excellent tutorial about basic DC theory, circuits, systems operation, and troubleshooting.  The battery service module, pages 17-20 covers parasite battery drain troubleshooting.
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