Honda Prelude 1993 Service Manual page 332

PGM-FI System
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Continuity
With 3orvico chock connactor
jumpod, (ra. pagc 1142), codo
30 .nd/or 31 arc indicatod.
Do the ECM R6set Procedure {see
p a g e 1 1 - 4 3 ) .
Test drive necessarv.
Drive th3 car for several miles so
that the transmission upshifts and
downshifts soveral times.
lhtdmittont failurs, gylt.m i. OK
ai thir tlmo.
Chock for poot connoction! or
loo.. wiro. at C4ll
(TCMI snd
ECM,
Does th€ MIL indicat€ code
30 and/or 31?
Turn the ignition switch OFF.
Connect the test harnssg to the
msin h€rness only, nottothe ECM
{see page
'l1-45).
Disconnect the 22P connector
from rhe TCIV.
Check for continuity between 93
and/or 84' terminal and body
grouno.
RoDair rhort in ORN or Pf{Kr wilo
botw.€n ECM {B3 or B4r I .nd rh.
TCM.
Troubleshooting Flowchart - A/T Fl Signal A/B (A/T only)
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The Malfunction Indicator Lamp (MlL) indicates Diagnostic Trouble Code (DTC) 30: A problem in
-l 30 l-
tne A/T Fl Signsl A circuit between Transmission Control Module {TCM) and ECM.
-
r;;--]
- The Maltunction Indicator Lamp (MlLl indicates Diagnostic Trouble Code {DTCI 31: A problem in
I Jr l- the A/T Fl Signal B circuit between Transmission control Module {TCM) and ECM.
Conlinuity?
*r codo 31 {A/T Fl signal B)
NO
( T o p a g e 1 1 - 9 1 )
1 1 - 9 0