Honda Prelude 1993 Service Manual page 502

Electrical Troubleshooting
Chack tor boao TCM connac-
to.a. ll nacoraary, aubrlhula
a k n o w n - g o o d T C M l n d
mclract.
Troubleshooting Flowchart (cont'd)
YES
S.ltdlomrl! { Xr4 | lndlc.tor
leht bl|rb thr..-i6.r.
Turn the ignitioo switch ON.
Chock whothor tho Malfunc-
tion Indicato. Lamp (MlL)
blinks lsse soction 1 11.
R.p.h th. PGM.FI Sy.t.m
{r....ctlon l1}.
ls th6 MIL blinking?
Disconnoct th6 26P and 22P
connectors trom th€ TCM.
C o n n o c t t h 6 T 6 s t H a r n e s s
"4"
arfr "D" connoctora to
the wire harno$ onv, not to
the TCM 114-3$.
Turn the ignhion switch ON.
Mosgurs ths vohsg€ b€twe6n
the D1 I ard A29A26 torm'F
na|s.
R.plli op.n or rhort In LT
ORiUBLK wl.. b.tw..n th.
D I I tcrmlnll aid thc ECM.
ls the vohago 4.75-5.25 V?
Turn the ignition switch OFF.
C o n n e c t t h 6 T e s t H a r n e s s
"A" snd "0" conn6ctors to
tho TCM.
Turn th€ ignition switch ON,
Moasuro tho voltago b€twe€n
th6 D7 snd A2tA26 torminal€.
R.pdr op.n or thon In RED/
BLK wlrr b.twarn lh. D7
tcrmlnd lnd lha TP $naor.
ls tho vohagb approx. O.5V?
Possibh Csus€
' Disconnected throttl€ position
{TP} sonsor connoctor
' Shon or op€n in TP sonsor
' FEulty TP sonsor
o o o o o o o o o o o o
o o o o o o o o o o o o
o o o o o o o o o o o
o o o o o o o o o o o
4 . 7 5 - 5 . 2 5 V ?
Appror.0.5V?
A26
o o o o o o o o o o o o
o o o o o o o o o o o o
o o o o o o o o o o o
o o o o o o o o o o o
14-40