Honda Civic Service Manual page 259

PGM-FI System
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DTC Troubleshooting
DTC P0107: MAP Sensor Circuit Low Voltage
1 . T u r n t h e i g n i t i o n s w i t c h O N ( l l i .
2. Check the MAP with the scan tool.
ls about 101 kPa (760 mmHg,30 in.Hg)or 2.9 V
indicated?
YES Intermittent failu re, system is OK at this time.
Check for poor connections or loose terminals at
t h e M A P s e n s o r a n d a t t h e E C M . I
N O - G o t o s t e p 3 .
3. Turn the ignition switch OFF.
4. Disconnect the MAP sensor 3P connector.
5 . T u r n t h e i g n i t i o n s w i t c h O N ( l l l .
6. lvleasure voltage between MAP sensor 3P
c o n n e c l o r t e r m i n a l s N o . 1 a n d N o . 3 .
1 .
sGl
{GRN/WHTI
W i r e s d e o f f e m a l e t e r m i n a i s
ls there about 5 V?
YES Go to step 8.
N O - G o t o s t e p 7 .
Measure voltage between EClvl connector
t e r m i n a l s 4 1 1 a n d 4 2 ' 1 .
ECM CONNECTOR A 13'IP}
MAP SENSOR 3P CONNECTOF
vccr
{YEL/BED)
sGr
{ G R N / W H T }
11-52
W i r e s i d e o f f e m a l e t e r m i n a l s
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8 .
ls there about 5 V?
YES-Repair open in the wire between the Eclvl
( A 2 1 ) a n d t h e M A P s e n s o r . l
NO Update the ECM if it does not have the latest
software, or substitule a known-good ECM, then
recheck (see page 'l 1-6). lf the symptom/indication
goes away with a known-good ECfvl, replace the
o r i g i n a l E C M . I
Check the MAP with the scan tool.
ls 2 kPa (15 mmHg,0.6 in.Hg) ot less or 0 V
ind icated?
YES-Go to step 9.
NO Replace the lvlAP sensor.l
Turn the ignition switch OFF.
Disconnect ECM connector A (31P).
Check for continuity between MAP sensor
connector terminal No. 2 and body ground.
MAP SENSON 3P CONNECTOA
ls therc continuity?
YES-Repair short in the wire between the ECM
( A 1 9 ) a n d t h e M A P s e n s o r . l
NO Update the ECM if it does not have the latest
software, or substitute a known-good ECM, then
recheck (see page 11-6). lf the symptom/indication
goes away with a known-good ECM, replace the
o r i g i n a l E C M . I
9 .
'10.
1 1 .
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