Troubleshooting Flowchart - Ignition Output Signal - Honda Prelude 1993 Service Manual

PGM-FI System
Troubleshooting Flowchart - lgnition Output Signal
H23Al ongine IUSA: Si/Caneda: SRl,
H22A1 ongino IUSA: Si VTEC/ Clnada
sR-v):
NOTE: lf the engino won't stari. it
mav take 20 seconds of cranking to
set the code.
YES
{ T o p a g e 1 1 - 8 1 }
(To page 1 1-81)
i151 :16:
The Malfunction Indicator Lamp (MlL) indicates Diagnostic Trouble Code (DTC) 15: A problem in the
:
lgnition Output Signal circuit.
- Tho MIL ha5 been roponod on.
- With sorvice chock connoctot
iumpod {!€€ p.g€ 1142), code
15 is indic.ted.
Do the ECM Reset Procedure (see
p a g e 1 1 - 4 3 1 .
lnt€rmittant failute. tYllam i! OK
.t this timo (t.!l drive may bo
nac6slary).
Chcck for poot connactions or
looso wi.or ot C433 {locrtod at
.ight shock towet). Ct2S llgntdon
Conlrol Modulo llCMl) and ECM.
ls the MIL on and doos it
indicate code 15?
Turn the ignition switch OFF.
Turn the ignition switch ON.
Measure voltage betwegn YEL
(+ ) termin€l and body ground.
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