Honda Civic Service Manual page 452

PGM-FI System
Elestrical Load Detector (ELDI ('99 - 00 Models except D16y5 engine with
M/Tl
The scan tool indicates Diagnostic Trouble code (DTCI Pl298: A high
vottage problem in the Etectrical Load
Detector (ELD) circuit.
ELD 3P CONNECTOR (65/0
EL {GRN/REOI
Wire side of fernale terminals
ELD 3P CONNECTOR (CA54I
TI
r l 2 l 3 l
I crvo
(o) (BrKr
Y
Wire side of lemale terminals
ECM/PCM CONNECTORS
A (32P1
Wire side of lemale
EI- IGRN/RED)
terminals
ECM/PCM CONNECTORS
A {32P)
Problem ve.itication:
1. Do the ECN4/PCM Reset pro
cedure.
2. Start the engine.
3- Turn on headiights.
Inte.mittent teilu.e, svstem is OK
at this lime. Chock for Door con-
nections or loose wires at Ci31
{ l o c a t e d u n d e r J i g h t s i d e o t
daihl, C354 (ELD) and ECM/PCM.
ls DTC P1298 indicated?
Check for an open in the wire
{lG1 line}:
1 . T u r n t h e i g n i t i o n a n d h e a d -
lights OFF.
2 . D i s c o n n e c t t h e E L D 3 P c o n
3. Turn the ignition switch ON (ll).
4. Measure voltage between body
ground and the ELD 3P connec-
torterminalNo. 1.
Repair opon in tho wiro batwe€n
No. 15 ALTERNATOR Sp SENSOR
{7.5 A} fuse in th6 undor-dash
Iuse/reley box and ELD.
ls there battery voltage?
Check for an open in the wiro
{GND linel:
1. Turn the ignition switch and
headlights OFF.
2 . D i s c o n n e c t t h e E L D 3 P c o n
nector.
3. Check for continuity between
body ground and the ELD 3P
connector terminal No. 2,
Repair open in the wire bstwoen
ELD connsctor and Gia02.
Check ,or an open in the wire IEL
linel:
1. Disconnect the ECM/PCM con-
nector A (32P).
2. Check for continuity between
the ELD 3P connector terminal
No. 3 and ECM/PCM connec-
tor terminal A30.
Chock fo. a malfunction in the ELD:
'1. Reconnect
the ELD connector
a n d E C M / P C M c o n n e c t o r
A (32P).
2. Stan the engine and allow it
to idle.
3 . W h i l e m e a s u r i n g v o l t a g e
between ECM/PCM connector
terminals A30 and B2O, turn
the headlighrs on ow).
ls there continuity?
Repsir op€n in the wire between
ELD connector and ECM/PCM.
Substitute a known-good ECM/
PCM and recheck. lf symptom/
indication goes away. replace
lh6 original ECM/PCM.
Does the vokage drop?
W i r e s i d e o f f € m a l e t e r m i n a l s
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