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[Datsun 1200 encyclopedia]

Turn Signal Testing

Revision as of 18:25, 14 May 2012; view current revision
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Categories: Diagnoses and Corrections | Body Electrical System

Turn Signal (indicators) problems?

Contents

Specific bulb doesn't light up

Remove the lens and twist the bulb out. Inspect it for:

* broken filament
* Loose glass 
* Corrosion of socket

Clean any corrosion with a wire brush and contact cleaner like Deoxit spray. Be sure to clean the bulb contact metal as well as the light socket.

Replace any damaged bulb.

One Side Flashes

Indicators Flash Slowly

The flasher units are load-dependent. So if the load is not correct -- for example, if one of the three bulbs is burned out -- it will not operate correctly.

Verify that all three bulbs on the side are OK.

  • Front t/s lamp
  • Rear t/s lamp
  • dash t/s lamp

Replace any damaged bulb.

If the problem continues, follow the "Does Not Flash" section below.

Indicators Do Not Flash

The flasher units are load-dependent. So if the load is not correct it will not operate correctly.

  • One bulb burned out. See above section.
  • Flasher unit is incorrect part number. Most flasher units look identical, so check the Part Number on the flasher, and replace if it is the wrong type. See Turn_Signals#Part_Numbers
  • Flasher and Hazard units are swapped. Check the part numbers and swap them around correctly. See Turn_Signals#Flasher_Location
  • Flasher unit is broken. Test it.
  • Wiring problems. Trace it.

Fuse Blows

Fuse blows when T/S lever is activated left or right. Possible causes include:

  • Incorrect fuse. For a Datsun 1200, the T/S fuse is the 15A Hazard/Horn/Stop fuse. If a smaller fuse is installed, replace with the correct 15A size.
  • The t/s switch (which is inside the steering column) may be loose. Tighten the switch, replace the fuse, and test again.

First Checks

Troubleshooting