chalander wrote:How would one be able to use a multimeter to check? What setting and number are you looking for?
The pic in the first post kind of explains it.
You need to set your multimeter to measure resistance on the ~100 Ohm range. To know how to wire it up, you need to find the common point of the 4 resistors (the 12V point in the first pic in the OP), and the other 4 indiviudal ends of each of the resistors (1,2,3,4). Start measuring resistance between the various pins. You will find, that you only have two resistance values, that pop up on the meter, and one if them is two times the other (e.g. 6 Ohm, and 12 Ohm). When you're measuring 12 Ohms, you're measuring the resistance of two resistors in series (like in the first PIC in the OP, you're measuring between terminals 4 and 2, or 4 and 3, or 1 and 2, etc.). When you're getting a resistance value of 6 Ohms, you're measuring the resistance of one resistor (between the common point, and the other end of one of the resistors). The pin, that's involved in all of the 6 Ohm measurements, is the common pin.
I've just used 6 and 12 Ohms as an example, the actual value varies on the model of car. The point is, one measurement will be twice the other one, if the internal wiring is the same as our CA resistors, or as the DSM one mentioned in the OP (one common terminal, and 4 other terminals for the four resistors).
The CA18DET FSM page "EF&EC - 128" has an illustration connected to this.
If this is, what you're asking...