Honda S2000 Service Manual page 362

EVAP System
DTC Troubleshooting (cont'd)
6 .
7 .
8 .
1 0 .
Turn the ignition switch OFF.
Reinstall the fuel fill cap.
Disconnect the FTP sensor 3P connector.
Turn the ignition switch ON (ll).
Measure voltage between FTP sensor 3P connector
t e r m i n a l s N o . 1 a n d N o . 2 .
FTP SENSOR 3P CONNECTOR
Wire side of {emale terminals
ls there about 5 V?
YES Go to step
'l 1.
NO Repair open in the wire between the FTP
s e n s o r a n d t h e E C M ( C 1 8 ) . I
1 1 - 1 3 4
11. Measure voltage between FTP sensor 3P connector
t e r m i n a l s N o . 2 a n d N o . 3 .
FTP SENSOR 3P CONNECTOR
PTANK (LT GRN)
SG2 (GRN}
Wire side of female terminals
ls there about 5 V?
YES Replace the FTP sensor.l
NO Go to step 12.
12. Measure voltage between ECM connector
terminals A29 and C18.
SG2 (GRN/YEL)
Wire side of female terminals
ls there about 5 V?
YES - Repair open in the wire between the FTP
s e n s o r a n d t h e E C M ( A 2 9 ) , I
NO Substitute a known-good ECM and recheck
(see page 1 1-5). lf the FTP sensor readings are now
n o r m a l , r e p l a c e t h e o r i g i n a l E C M . I
ECM CONNECTORS
PTANK (LT GRN)