Troubleshooting Flowchart - Electrical Load Detector - Honda Prelude 1993 Service Manual

PGM-FI System
Troubleshooting Flowchart - Electrical Load gs1s61q1 (ELD)
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The Malfunction Indicator Lamp (MlL) indicates Diagnostic Trouble Code (DTC) 20: A problem in the
I 20 l-
Etectrical Load Detector (ELD) circuit.
, i
it
With sorvice chock connoctor
jumpcd (3oe pago 1142), code
20 is indicatod.
Do the ECM Reset procedure {see
page 1 1-43).
Start engine and keep engine rpm
at idle.
Turn on headlighls.
Intormitlgnl lalluro, system is OK
at this timo {to.t ddv€ m.Y bo
nocoa!4ry1.
Chock tor ooor connociion3 ot
looso wlr6s at C420 IELD) 8nd
ECM.
Does the MIL indicate code 20?
Turn the ignition swilch OFF.
Remove the undeFhood tuse/
relay box and remove the fuse/
relay box lower cover,
Turn the ignition switch ON.
Measure voltage between BLK/
Y E L ( + ) t e r m i n a l a n d B L K ( - l
terminal.
Measure voltage between BLK/
Y E L { + ) t e r m i n a l a n d b o d y
ground.
Roplir opon In BLK rvk.
batwcan tha 3P con-
n ctor and erc3 llocat-
cd undor middlo ol
dashl.
ls there battery vollage?
Ropair opon in BLK/YEL wlto bo-
tweon ECU IECMI {'15 Al fu3o {in
tho undor-dash tuso/rolay boxl
and lho 3P connector.
SLKTYEL ( + }
LOWER COVER
(To page 1 1-85)
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