10-28-2016, 09:47 PM
my pdf has all pages, on 89/90
keep in mind, trackers books call pin A , B, and reverse, A1 = B1, but all else is same, just the A/B swap.
this doc, is heavy commented for the tricky parts of the 60A ECU.
there are 2 sets, of schematics there,page 9+ second set by Suzuki.
http://www.fixkick.com/ECU/89/1990-scan-...lpages.pdf
some of the DLC pins are input, and some output, do not ground outputs if any ECU, or BOOM. or hot wire, them 2x boom.
note that outputs here by GM are shown as switches, inside ECU, those are Transistors. in fact. (collectors, in most cases)
page 9 shows test connector, this IS DLC. some books call it the monitor connector.
the words diag connector F/B means fuse block.
The real DLC was in the front harness in front of the car battery. and this car, has 1 extra wire to the fuse block, F/B fuse "Diag"
Blue-yellow is diag. the CEL must flash, in DIAG mode, (if and only if the NAG switch is removed from the speedo cluster back side (4pin,3wires) or wires cut to it. The nag needs to be removed
so that CEL always works correctly, meaning flashes on DEMAND, its a key part of diagnosis...
I think this year , there is no "serial data" pin, aka. suzuki SD , aka. ALDL pin, so only flash codes work here and not the Tech2, scan tool. making pin 15, super important pin.
The GM name for pin is C2-15 in page one.
keep in mind, trackers books call pin A , B, and reverse, A1 = B1, but all else is same, just the A/B swap.
this doc, is heavy commented for the tricky parts of the 60A ECU.
there are 2 sets, of schematics there,page 9+ second set by Suzuki.
http://www.fixkick.com/ECU/89/1990-scan-...lpages.pdf
some of the DLC pins are input, and some output, do not ground outputs if any ECU, or BOOM. or hot wire, them 2x boom.
note that outputs here by GM are shown as switches, inside ECU, those are Transistors. in fact. (collectors, in most cases)
page 9 shows test connector, this IS DLC. some books call it the monitor connector.
the words diag connector F/B means fuse block.
The real DLC was in the front harness in front of the car battery. and this car, has 1 extra wire to the fuse block, F/B fuse "Diag"
Blue-yellow is diag. the CEL must flash, in DIAG mode, (if and only if the NAG switch is removed from the speedo cluster back side (4pin,3wires) or wires cut to it. The nag needs to be removed
so that CEL always works correctly, meaning flashes on DEMAND, its a key part of diagnosis...
I think this year , there is no "serial data" pin, aka. suzuki SD , aka. ALDL pin, so only flash codes work here and not the Tech2, scan tool. making pin 15, super important pin.
The GM name for pin is C2-15 in page one.
http://www.fixkick.com