Honda Civic 1998 Service Manual page 304

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Electrical Load Detector (ELDI
The scan tool indicates Diagnostic Trouble Code (DTC) Pl297; A low voltage problem in the Electrical Load
Detector (ELD) circuit.
EID 3P CONNESTOR {qtsill
Wire side of lemale terminals
f t ,
L l l 2 l 3 l
-T
O)
Y
)
IGRN/RED}
ECM/FCM CONNECTOR D (16PI
Wire side of temale terminals
t
(cont'd)
1 1 - 1 1 5
-
DTC P1297 is slored.
Problem verificationi
1. Do the ECM/PCM Reset Pro-
cedure,
2. Start the engine.
3. Turn on headlights.
Intermittent feilure, svdam k OK
at this time. Ch€ck to. poor con-
noctions or looso wir.s at C131
{located under right 3id€ ot dashl.
Cil54 {ELD} and ECM/PCM.
ls DTC P1297 indicated?
Check for an op€n in the wire
{lGl linel:
1 . T u r n t h e i g n i t ; 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 -
nector,
3. Turn the ignition switch ON (ll).
4. Measure voltage between body
ground and the ELD 3P connec'
tor terminal No. 1.
Ropair open in the wire between
No. 15 ALTERNATOR SP SENSOR
17.5 Al tuse in thc undor-dash
tuse/relay box and ELD.
Check tor short in the ELO:
Measure voltage between body
ground and the ELO 3P connector
t e r m i n a l N o . 3 -
ls there approx. 4.5 V2
Check tor a short in the wi.e (EL
linel:
1. Turn the ignition switch OFF.
2. Disconnect the ECM/PCM con-
nector D (16P).
3. Check {or continuity between
b o d y g r o u n d a n d E C M / P C M
connector terminal D16.
Repair short in the wire betwcon
ECM/PCM {D161 and ELO.
ls there continuity?
Substitute r known-good ECM/
PCM and recheck. Ifsyrnptom/
indication goes away. roplace
the original ECM/PCM.