Dtc P0108: Map Sensor Circuit High Voltage; Dtc Troubleshooting - Honda S2000 Service Manual

PGM-FI System
DTC Troubleshooting (cont'dl
DTC P0108: MAP Sensor Circuit High Voltage
1. Start the engine. Hold the engine at 3,000 rpm with
no load (in neutral) until the radiator fan comes on.
then let it idle.
2. Check the MAP with the scan tool.
ls apptox. 101 kPa (760 nmHg, 30 in.Hg), 2.9 V or
higher indicated?
YES Go to step 3.
NO Intermittent failure, 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
3. Turn the ignition switch OFF.
4. Disconnectthe MAP sensor 3P connector,
5. lnstall a jumper wire between MAP sensor 3P
c o n n e c t o r t e r m i n a l s N o . 2 a n d N o , 3 .
MAP SENSOR 3P CONNECTOR
SGl {GRN/WHT}
MAP IGRN/RED)
JUMPER WIRE
Wire side of female terminals
Turn the ignition switch ON ( ll).
Check the l\4AP with the scan tool.
ls about 101 kPa (760 mmHg,30 in.Hg),2.9 V or
higher indicated?
YES Go to step 8.
N O R e p l a c e t h e M A P s e n s o r . t
R e m o v e t h e j u m p e r w i r e .
6 .
7 .
11-44
9. l\4easure voltage between MAP sensor connector
t e r m i n a l s N o . 1 a n d N o . 2 .
MAP SENSOR 3P CONNECTOR
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
ls lhere about 5 V?
YES Go to step 10.
NO Repair open in the wire between the ECM (C7)
and the MAP sensor.t
Turn the ignition switch OFF,
Install a jumper wire on the ECM connector
terminals between C7 and C 17.
ECM CONNECTOR C 131P)
SG1 {GRN/WHT)
--+r
1 2
4 5
l r l l e l s l r o l
t l
12 l 3
1 4
15 16
t l r e l r s l z c l z i i z l
24 25 26
414-InFV
MAP {GRN/RED)
JUMPEB WIRE
Wire side of female terminals
Turn the ignition switch ON {ll).
Check the l\4AP with the scan tool.
ls about 101 kPa (760 mmHg, 30 in.Hg), or 2.9 V
or higher indicated?
YES Substitute a known-good ECM and recheck
(see page 1 1-5). lf normal l\4AP is indicated, replace
t h e o r i g i n a l E C M . t
NO Repair open in the wire between the ECM
( C 1 7 ) a n d t h e M A P s e n s o r . t
1 0 ,
'I l.