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2002 Isuzu r0deo sport 4 cyl

Tiny
ANONYMOUS
  • MEMBER
  • 2002 ISUZU RODEO
  • 119,000 MILES
2002 isuzu r0deo sport 4 cyl. Manual trans, 2WD; no cruise control, no alarm; wprers have 1 intermittent speed; problem is headlights were on when I went out to vehicle; the headlight switch was not on; there was a buzzing sound coming from the headlight relay in engine compartment; removed relay and buzzing stopped; installed new relay and same problem; I replaced headlight switch, but still have same problem/symptoms. Can you offer any help, please; vehicle is in very good condition otherwise
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Wednesday, October 31st, 2012 AT 7:26 PM

1 Reply

Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
I have the schematic of the headlight circuit attached. The headlight relay is linked to the security system and since the light switch replacement did not resolve the problem, you need to be checking the alarm control unit as the alarm is not working as well.

Did you check the fuses?
Does unplugging the light switch makes any difference to the buzzing noise?
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Wednesday, October 31st, 2012 AT 8:06 PM

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