Honda Prelude 1993 Service Manual page 499

Number of Dr
indicslor light
blinks while
Service Check
Connsctor is
iumped.
Da indicator
light
Possible Csuse
Symptom Refer to
pa9e
1 0
Blinks
Disconnected engine coolsnt temperature
(ECT) sensor connector
Short or open in ECT sensor wire
Fauhv ECT sensor
Lock-up clutch does not
engage.
14-50
1 1 OFF
Disconnected ignition coil connector
Short or open in ignition coil wire
Fauhy ignition coil
Lock-up clutch does not
engage.
1 + 5 1
't4
OFF
'Short or open in FAS
{ORIVRED} wire be-
tween the D16 terminaland ECM
' Trouble in ECM
' Transmission jerks hard
when shifting.
14-52
OFF
Disconnected mainsh8ft speed sensor con-
nector
Shon or open in mainshatt speed sensor wire
Faulty mainshaft sDeed sensor
Transmission jerks hard
when shifting.
1 + U
Symptom
Probable Cause
RBf. page
Da indicator light does not come on for 2 seconds atter ignhion is first
turn€d on.
14-56
D4 indicstor light is on steady, not blinking whenever the ignition is on.
1+58
Lock-up clutch does not have duty operation {ON-OFF).
Check A/C signal
with A/C on.
1+59
Lock-up clutch does not engage.
Shift lever cannot be moved from
d€oressed.
P
Dosition with the brake oedal Check brake switch signal.
14-60
f the setf-diasnois L91l indicatof light does not blink, perform an inspection according to the tabte below.
. It a customer describes the symptoms f or codes 3, 6, or t t ,
Jeqn" I Oo--l inaicator light is not blink ing, it wilt be necessary to
r€crsglg1lie symptom by tost driving, and then checking the I D4 | indic8tor light with the ignition still ON.
o lf the
ElJindic$gllight
displsys codes other than those liste-d above or stays lit continuously, the TCM is tauhy.
. Sometimes the
Lgllind;cator light and the Malfunction Indicator Lamp (MlL)/Check Engine light may come on simuhaneously.
It so, chsck the PGM-FI syst€m according to the number ot blinks on the MIL/Check Engine light. then reset the memorv bv
removing the CLOCK RADIO fuse in the under-hood fuse/relay box tor more than 10 seconds. Drive the vehicle for several
minutes at speed over 30 mph (50 km/h). rhen recheck the MIL/Check Engine tight.
NOTE:
. PGM-FI svstem
The PGM-Fl system on this model is a sequentiat muhiport fuel iniection system.
' Disconnecting th€ CLOCK RADIO fuse also cancels the radio anti-thett code. preset stations and the clock
setting. Get the
cuatomer's code number and make note of the radio presets before removing the fuse so you can reset them.
14-37