Quote:
Originally Posted by oab_au
Mate sorry but, there is no 12/13 listed in my Australian FSM.
The US car does have another unit that we don’t have, that is a temp sensor for the EGR system that is on the inlet manifolds EGR line that tells if hot gas is flowing when the EGR is working, the Aus car does not have it, so that could be what 12/13 are used for.
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"13" (Yellow/Green in and out) involves a circuit sensing temperature and "12" (Yellow/Back) the oil pressure sensing switch. Both circuits are completed via a ground connection.
The oil pressure switch completes a circuit to the oil pressure warning light and therefore should be normally open. You can verify the circuit by shorting socket wire "12" to ground and observing the warning light with the ignition on.
You will probably be able to measure some resistance between plug wire "13" and ground and shorting the socket wire to ground should move the gauge.