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Uk S4 electrics


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Hi all, where is the IGNITION POWER RELAY (sheet 1 circuit diagrams) situated in a UK esprit S4?      What does the LAMP DRIVER MODULE (sheet 25) do and where is it situated?Thanks for any help.

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The ignition power relay is found behind / below the ABS ECU (not the revised harness vehicles) The lamp driver module is essentially a relay to allow a greater current supply to the warning lamps than the ABS ECU can provide (I do not know where it is located).

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Thanks Derek,  section ML page 38 shows below ABS controller: RADIO ISOLATOR RELAY,ABS RELAY CONTROL, FRONT SOLENOID ENABLE RELAY,REAR SOLENOID ENABLE RELAY for early non revised harness cars like mine.Comment please

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It's there. When I first bought my car I would occasionally find things like the fan coming on when the ignition was off; I tracked the problem down to the ignition power relay not having its cover on and it flopping around on its harness causing  the relay contacts to get pressed closed.

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