Honda Civic Service Manual page 391

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Manifold Absolute Pressure (MAPI Sensor -
i;idlga lil;dels,'99 - 00 Dl6Y5 ensine with M/T)
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The scan tool indicates Diagnostrc Trouble code (DTC) Po108: A high
voltage (low vacuum) problem in the
Manifold Absolute Pressure (MAP) sensor.
MAP SENSOR 3P CONNECTOR ICl11}
MAP
IRED/GRNI
JUMPER WIRE
Wire side ol female terminals
vccl
IYEL/RED)
ECM/PCM CONNECTOR D (16PI
MAP
(RED/GRN)
sG1
(GRN/WHT)
Wire side of female terminals
(cont'd)
1 1- 12 1
The MIL has been reported on
OTC m108 is stolod.
Problem vetitication:
1 . S t a r t t h e e n g i n e . H o l d t h e
engine at 3,000 rPm with no
load (in Park or neutral) until
the radiator fan comes on, then
let it idle.
2. Check the MAP with the scan
tool.
lntormittent lailure, sFtom k OK
.t thb time. Chock lor Poor con'
nections or loorg wires at Cll'l
|MAP sensorl snd ECM/PCM.
ls 101 kPa (760 mmHg,30 0 in.Hg)
or higher indicated?
Check tor an open in the MAP
36nSOt:
1. Turn the ignition switch OFF
2 . D i s c o n n e c t t h e M A P s e n s o r
3P connector.
3. Install a jumper wire betlveen
the MAP sensor 3P connector
terminals No 3and No 2.
4. Turn the ignition switch ON (ll).
5. Check the MAP with the scan
t o o l .
ls 101 kPa (760 mmHg, 30 0 in.Hg)
or higher indicated?
Check for an open in wire (SG1
line):
1. Remove the iumper wire.
2. Measure voltage between the
MAP sensor 3P connector te.
minals No. 1 and No 2
Rapai. open in the wito batwoen
ECM/PCM (D12) .nd MAP !en.or.
ls there approx. 5 V?
Check for an oPon in the wiie
(MAP linel:
1. Turn the ignition switch OFF.
2 . C o n n e c t t h e E C M / P C M c o n -
nector terminals D3 and D12
with a iumPer wire.
3. Turn the ignition switch ON (ll).
4. Check the MAP with the scan
tool.
Repair opon in the wiles bstlt oon
ECM/PCM (D3l and MAP 3oGor.
ls 101 kPa (760 mmHg, 30 0 in.Hg)
or higher indicated?
Substituto a known'good ECM/
PCM and rochock. ll normal MAP
is indicated, replace tho original
ECM/PCM.
JUMPER WIRE
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