2003 Chevy Blazer CSEFI MAF power wire short

Asked by Toben Apr 25, 2020 at 02:25 AM about the 2003 Chevrolet Blazer LS 4-Door 4WD

Question type: Maintenance & Repair

Blazer kept stalling at idle in drive thrus and idled
erratically at red lights. Code P0101. Cleaned MAF
and reset code. Code came back and problem
persisted. Tested MAF harness. Terminal A has 5
volts: good. Terminal B has no resistance: good.
Terminal C had 12 volts: good. However while
testing Terminal C my multimeter probes touched
and sparked. Now I have no power to Terminal C.
My ground still has zero resistance and Terminal A
still has 5 volts. I cannot find a wiring diagram for
the MAF harness anywhere! I have no idea what
powers the MAF or where to begin looking for the
short I caused. I now have a code P0102 and
P0443. P0443 indicates EVAP canister. Not sure
where to begin. :/

2 Answers

Your Answer:

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