Acura 1994 Integra Service Manual page 244

Measure voltage between YEL/
WHT {818C1 engine), YEL/RED
(B188'1 engine) {+ ) terminal and
bodv ground.
Measure voltage between YEL/
WHT (818C1 engine), YEL/RED
{B1881 engine) (+ } terminal and
GRN/WHT (- ) terminal.
ls there approx. 5 V?
Repair opon in GRN/
WHT wir6 botweon
ECM lD2l l and tho
MAP sonsor,
Turn the ionition switch OFF.
ls there approi. 5 V?
Connect the test harness "D"
connector to the ECM only, notto
the main wire harness {see page
1 1 , 3 7 ) .
Turn the ignition switch ON.
Measure voltage betweon wHT/
YEL (+ ) terminal and GRN/WHT
{- } terminal.
Measure voltage between D19
{ + } t e r m i n a l a n d D 2 1 { - }
termrnat,
ls there approx. 5 V?
Bepair open in YEL/WHT wi.e be-
tw€6n ECM lD19) and tho MAP
aon30t.
ls there approx. 5 V?
Substitule s known-good ECM
and rechock. ll symptom/indica'
tion goes away, replac€ tho oiigi'
nal ECM.
Turn the ignition switch OFF.
Reconnecl the 3P connector to
the MAP sensor.
Connect the test harness between
the ECM and connector (see page
1 1 - 3 7 1 .
Turn the ignition switch ON.
1 1 , 5 2 )
{ T o p a g e 1 1 - 5 4 }
l T o p a g e I l - 5 4 )
(cont'd)