Honda Prelude 1993 Service Manual page 309

PGM-FI System
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t 1 6 l - - l 3 l -
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lar. Hll OAUOE
N: DING
11-64
Troubleshooting Flowchart -Manifold Absolute Pressure (MAP) $gn5s1
-
The Malfunction Indicator Lamp (MlL) indicates Diagnostic Trouble Code (DTC) 3: An electricsl
oroblem in the Manifold Absolute Pressure {MAP) Sensor system.
The Malfunction Indicator Lamp {MlL) indicates Diagnostic Trouble code (DTC) 5: A mechanical
problem (vacuum leak) in the Manifold Absolute Pressure (MAP) Sensor System'
The MAP sensor converts manifold absolute pressure into electrical signals and inputs the EcM.
OUTPUT
VOLTAGE
( v l 3 . 5
3 . 0
2 . 5
2.0
1 . 5
I
r ' , i
i l
, '
I'i I
l l
CAVITY
-16l-
-
/ - \ /
- Engin6 is watm ond running.
- Tho MIL has b6€n loPortod on
- With soryico ch6ck connoctot
jumpod (so€ pago 1 '142), codo
3 is indicalod.
Do the ECM Reset Procedure {see
p a g e 1 1 - 4 3 ) .
Intgrmittont failuro, 3yltam is OK
at this time ltort ddve may D6
noc{r!ry}.
Chock tor Poor connoction! ol
loose wiror at O163 (locatod un-
dor loft 3ide ol drshl, C32O IMAP
3.n3otl and ECM.
ls the MIL on and does it indi-
cate code 3?
Turn the ignition switch OFF.
Disconnect the 3P connector from
the MAP sonsor.
Turn the ignition switch ON.
(To psge l1-65)