Honda CR-V 1997 Service Manual page 343

'98 - 00 models'
-
OTC P1298 is stored.
Problem verification:
1. Do the ECM/PCM Reset Pro-
cedure.
2. Start the engine.
3. Turn on the headlights .
Is DTC P1298 indicated?
1
YES
Check for an open in the wire
(lG1Iine):
1.
Turn the ignition and head-
lights OFF.
2. Disconnect the ELD 3P connector.
3. Turn the ignition switch ON (II).
4. Measure voltage between
body ground and the ELD 3P
connector terminal No.1.
Is there battery voltage?
/
1
YES
Check for an open in the wire
tGNOline):
1. Turn the ignition switch and
headlights OFF.
2. Disconnect the ELD 3P con-
nector.
3. Check for continuity between
body ground and the ELD 3P
connector terminal No.2.
"-
Is there continuity?
/
1
YES
Check for an open in the wire (EL line):
Check for continuity between the
ELD 3P connector terminal No.3
and ECM/PCM connector termi-
nal A30.
Is there continuity?
/
I
YES
Check for a malfunction in the ELD:
1.
Reconnect the ELD 3P con-
nector.
2. Start the engine and allow it
to idle.
3. While measuring voltage
between ECM/PCM connector
terminals A30 and B20, turn
the headlights on (low).
"
Does the voltage drop?
/
1
YES
Substitute a known-good ECMI
PCM and recheck. If symptom/
indication goes away, replace
the original ECM/PCM.
NO
Intermittent failure, system is OK
at this time. Check for poor con-
nections or loose wires at C354
IELD) and at the ECM/PCM.
Repair open or short in the wire
NO
between the No. 15 ALTERNA-
TOR SP SENSOR (7.5 A) fuse in
the under-dash fuse/relay box
and the ELO.
NO
Repair open in the wire between
I
the ELO connector and G40Z.
NO
Repair open in the wire between
the ECM/PCM IA30) and the ELO.
A 132P)
NO
Replace the ELO.
ELO 3P CONNECTOR IC354)
Wire side of female terminals
ELO 3P CONNECTOR IC354)
Wire side of female terminals
EL IGRN/REO)
ECM/PCM CONNECTORS
A 132P)
EL IGRN/REO)
Wire side of female
terminals
ECM/PCM CONNECTORS
EL IGRN/REO)
B 125P)
Wire side of female terminals
11-141