Urgent: FSM wiring issues

[mazikowski]

I downloaded the KN13 CA16DE FSM. On the ECCS wiring diagram, each connector is marked with the little tab present on that connector to let you know which pin is which when the connector is held that way (ie. the diagram shows 2 notches on top, 1 on bottom. so you hold the connector with 2 up and 1 down, the wires should match up). Are these when viewed from the plug side (looking at contacts) or the loom side (looking at where the wires go in) of the connector?

I also downloaded the S13 CA18DET FSM. The diagram on there does the same thing with marking the notches.

On the KN13 diagram, using the CAS as an example, it shows the plug on the loom as having 2 notches up, 1 down, and 1 to either side. Going from left to right, the wires are B, B/W, G/Y, G/B. Actually looking at the connector from the plug side, holding it with 2 notches up, 1 down, and 1 to either side, the wires go G/B, G/Y, B/W, B.

On the S13 diagram, again using the CAS as the example, it shows the plug on the loom as having 1 notch up, 2 down, and 1 to either side. Going from left to right, the wires are B, B/W, G/B, G/Y. Actually looking at the connector from the plug side, holding it with 1 notch up, 2 down, and 1 to either side, the wires go B, B/W, G/B, G/Y.

The KN13 AFM plug does the same as the CAS, the FSM says G/Y, B/W, B, G/B while the plug goes G/B, B, B/W, G/Y. I cannot check this one against the S13 loom as the AFM plug on my S13 loom had been cut off.

The plug for the throttle switch on the KN13, on the other hand, matches up with the FSM diagram perfectly while the KN13 Air Regulator plug does not.

Is this a known issue with the FSM, or am I looking at something wrong? I find it hard to believe that Nissan would intentionally make their FSMs not follow the same standards for diagrams.

[dattodude]

Since the Datsun manuals of the 70s, Nissan manuals always had regular errata updates.

I wouldn't be surprised if it was wrong. But different models of the same engine can certainly have slightly different wiring. Sometimes you need to measure the sender/sensor, and figure it out for yourself based on which one is black (earth) and/or which one goes to what terminal on the ECU.

[biosehnsucht]

some diagrams are from 'harness side' and some from 'connector side' (harness side = wires coming out side, connector side = contact pins side).

If they're "correct" but "backwards" then you're just looking at it backwards. If it was really different then it'd be something other than mirrored.

[mazikowski]

Well, the wires are correct but mirrored. What confused me is that, within the same diagram, some connectors match up when I looked at them while others were mirroed...