Brake Check Light
Blimey, only just fixed the low beam head lamp and already another minor lamp issue.
This time its the Brake Check Light that won't light up with the ignition switch turned to "start". Probably hasn't been working for some time but I had not noticed.
Lamp is not blown and brake differential pressure switch is open cct (all good!).
The brake switch grounds the lamp when something goes wrong with the brake system and bridging the connection here to ground does light up the lamp (so its all good here!).
Unfortunately I don't have a wiring schematic for the GJ, but do have one for the GH.
Probably be the same concept viz,
. there is a relay that gets energised with the ignition switch on "start"
. this relay grounds the lamp whilst starting the engine (functions as a momentary blown lamp check!).
The GH service manual just calls this relay the "lamp relay".
The question is: where is it to be found on the GJ?
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