Re: DRL troubleshooting - Saab 9-5 Bulletin Board - Saabnet.com
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Re: DRL troubleshooting
Posted by Ro in Woodbridge [Email] (more from Ro in Woodbridge) on Sat, 12 Feb 2022 13:34:43
In Reply to: Re: DRL troubleshooting, Denis, Fri, 11 Feb 2022 20:29:40
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Denis,
Initially confirm that you either have halogen or xenon light option. Wiring diagram is slightly different for each option.
First start by checking for good +B / chassis ground(s) as per diagram. I would then backprobe pin 4 of DICE to see if npn transistor is properly grounded. You have to have power ON and use caution.
Then with power OFF, check signaling conductor from dipped beam relay (8) 2/85 >>> H43-1 >>> DICE pin 4
Advise us what you get!
FYI from WIS:
+54 voltage is fed via fuse 35 to pin 6 on the light switch. The voltage passes to pin 39 on DICE from pin 10 on the switch, whereby the dipped beam relay will be grounded via pin 4 on DICE and close. +30 voltage is fed through the dipped beam relay (8) via fuses (11 and 13) and on to the headlamps (pin 3).
Cheers.
posted by 24.246.45...
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