Diagnostic Trouble Code - Honda Prelude 1993 Service Manual

Troubleshooting
Diagnostic Trouble
(4WS)
Code (DTC)
To
( 1 )
agnOSIlC I rOUOle UOOe tu I l-f -
display the Diagnostic Trouble Code (DTC)
Pull out the service check connector (2P) located behind the center console and connect the two terminals of the
connector with a iumper wire.
DATA LINK CONNECTOR (3 P)
JUMP€R
NOTE:
Do not attach
t h e j u m p e r w i r e .
,-->,/
' _ \
SERVICE CHECK
coNNECIOR (2Pt
V.fv6
t+ #12, t---
#22
--,
chock
o.g 0.4 0.8 o.g o.4
( 3 )
{4)
(2) Turn the ignition switch ON. but do not start the engrne.
Watch as the 4WS indicator light blinks to display the code
Record the codes.
N O T E :
a Be sure to record the code. lf you do any oI the following, the code will be erased.
- Disconnect the battery terminals
- Remove No. 43 CLOCK RADIO (10 A) fuse from the under-hood fuse/relay box
- Disconnect the 4WS control unit connector.
a It the engine is started
DTC indication pattern
with the service connector jumped, the N,lalfunction Indicator Lamp (MlL) will stay on
Main - sub
l'.""i11,n"i""
--+'
sub *
5'u" --"
Main
s i g n s l
F - # 2 2 = ,
t < - #
1 2
3 . 0
0 . 8 0 . 4
0 . 8 0 . 4
The 4WS indicator light displays a code by a series of long and short blinks. This indicator light can display multiple com-
ponent problems by blinking separate codes, one after another. The number of long blinks equals the lirst d;git of the
code. the number of short blinks equals the second digit. When there are multiple codes, there is a two second pause
between the codes.
System problems can be detected by both the main and sub central processing units (CPUS) in the 4WS control unit
Each CPU can memorize up to 1O codes. lf both CPUs have stored codes, the 4WS indicator light will:
a Blink quickly once as an indicator lignt check, (this happens only when the ignition switch is first turned on).
a Pause tor three seconds.
a DisDlav the codes stored in the main CPU.
a Pause for 1.6 seconds.
a Blink rapidly tor three seconds to indicate the switch between the main and sub CPU.
a Pause for 1.6 seconds.
a Display the codes stored in the sub CPU.
a Pause for three seconds, then repeat the cycle.
This cycle will continue until the ignition is turned OFF.
NOTE:
a Be su.e to check both CPUs for at least 10 codes betore turning OFF the ignition switch
a lf the main and sub CPUS display the same codes, those codes need only be checked once.
7-36