Dtc P0453: Ftp Sensor Circuit High Voltage - Honda S2000 Service Manual

1 t
t J .
1 4 ,
I 1. 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 ILT GRN)
SG2 IGRN)
Wire side of {emale terminals
Is there about 5 V?
YES Replace the FTP sensor.I
NO Go to step 12.
Turn the ignition switch OFF.
Disconnect ECM connector A (32P)
Check for continuity between FTP sensor 3P
connector terminal No. 3 and body ground.
P T A N K I L T G R N '
Isthere continuity?
YES Repair short in the wire between the FTP
sensor and the ECM (A29). t
NO Substitute a known-good ECM and recheck
(see page I 1-5). lf the FTP sensor reading 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
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
DTC P0453: FTP Sensor Circuit High Voltage
1. Check the vacuum lines of the FTP sensor lor
misrouting, leakage, breakage, and clogging.
Are the vacuum lines OK?
YES Go to step 2.
N O R e p a i r o r r e p l a c e v a c u u m l i n e s a s
n e c e s s a r y . I
2 . R e s e t t h e E C M ( s e e p a g e 1 1 - 4 ) .
3 . R e m o v e t h e f u e l f i l l c a p .
4 . 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 ) .
5. lvlonitor FTP sensor voltage with the Honda PGM
Tester. or measure voltage between body ground
and ECM connector terminal A29.
ECM CONNECTOR A {32P)
2 3
6 /
I
t0
12
13
t 5
17 1 8 1 1 9
m
21 24
25 26
n
6 l 2 s
30 32
PTANK ILT GRN)
Wire side of female terminats
ls there about 2.5 V?
YES Intermittent failure. system is OK at this time.
Check for poor connections or loose terminals at
t h e F T P s e n s o r a n d a t t h e E C M . I
NO Go to step 6.
(cont'd)
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