Instrument cluster lights flashing from bright to dim

2001 CHRYSLER TOWN AND COUNTRY
45,000 MILES
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FLYINGHEAVY
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  • 3 POSTS
The instrument cluster, A/C, radio and CD lights (all dash lights) sporatically flash from bright to dim when driving at night in my 2001 Town and Country. I performed a bite check and no error codes came up. Most of the time the light switch is left in the A position. Any suggestions on what might be causing thie problem?

Thanks!
Dec 20, 2011 at 6:09 PM
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MHPAUTOS
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Check that the alternator charge rate is not to high, i will look at the schematics and see if there is a voltage stabiliser for the cluster.
Dec 20, 2011 at 6:15 PM
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FLYINGHEAVY
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Thanks for your help!
Dec 20, 2011 at 7:07 PM
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MHPAUTOS
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  • 31,937 POSTS
let me know about the charge rate ASAP.
Dec 20, 2011 at 8:49 PM
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FLYINGHEAVY
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I am not familar with how to perform that check. Do I place the negative probe on the + terminal of the battery and the positive probe on the B terminal of the alternator?
Dec 20, 2011 at 10:31 PM
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MHPAUTOS
  • ✓Experienced Mechanic
  • 31,937 POSTS
Basic test B+ alternator neg to earth, run at idle and at 1800RPM approx, do with no load ands with load, ie, heater blower on and high beam on.
Dec 21, 2011 at 3:20 AM
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