Charging Circuit Troubleshooting; Charging System Indicator Test; Engine Wire Harness 6P Connector - Honda Civic 2002-2003 Service Manual

Charging System
Charging Circuit Troubleshooting
If the charging system indicator does not come on or
does not go off, or the battery is dead or low, test these
items in the order listed below:
Battery Isee page 22-50)
Charging system indicator
Alternator and regulator circuit
Alternator control system
Charging System Indicator Test
1. Turn the ignition switch ON
(II).
Does the charging system indicator come on?
YES-Go to step 2.
NO-Go to step 3.
2. Start the engine.
Does the charging system indicator go off?
YES-Charging system indicator circuit is OK. Go
to the Alternator and Regulator circuit
Test..
NO-Go to step 3.
3. Turn the ignition switch OFF.
4. Troubleshoot the multiplex control system Isee
page 22-172).
Is the multiplex control system OK?
YES-Go to step 5.
NO-Check the multiplex control system as
indicated by the diagnostic trouble code IDTC) Isee
step 8 on page 22-172) .•
5. Disconnect the engine wire harness 6P connector
from the starter sub harness 6P connector.
4-22
6. Measure the voltage at the No.3 terminal of the
engine wire harness 6P connector with the ignition
switch ON III).
ENGINE WIRE HARNESS 6P CONNECTOR
.-+-+-,
(BlK/YEll
2 3
5 6
=
Wire side of female terminals
Is there battery voltage?
YES-Go to step 7.
NO-Check for a blown No.4110A) fuse in the
under-dash fuse/relay box. If the fuse is OK, repair
open in the wire between the alternator and the
under-dash fuse/relay box .•
7. Turn the ignition switch OFF.
8. Disconnect engine control module (ECM) connector
B 124P).
9. Check continuity between the ECM connector
terminal B 10 and engine wire harness 6P connector
terminal No.6.
ECM CONNECTOR B (24P)
6 7
15
1718
23
ACGl (WHT/BlUj
ENGINE WIRE
HARNESS
6P CONNECTOR L....L....L..J
Wire side of female terminals
Is there continuity?
YES-Go to step 10.
NO-Repair open in the wire between the
alternator and the ECM .•