Engine Control Module (Ecm) - Honda Metropolitan CHF50 Service Manual

BATTERY/CHARGING SYSTEM
ENGINE CONTROL MODULE (ECM)
SYSTEM INSPECTION
Remove the body cover (page 2-7).
Turn the ignition switch to OFF.
Disconnect the ECM 26P connector.
Check the connector for loose contacts of corroded i
terminals.
Check the following at the harness side connectors
terminals.
BATTERY LINE
Measure the voltage between the Red wire terminal
and ground.
There should be battery voltage at all times.
If there is no voltage, check for a blown main fuse
(15A) and an open or short circuit in the wire har-
ness.
GROUND LINE
Check the continuity between the Green wire termi-
nal and ground.
There should be continuity at all time.
If there is no continuity, check for an open or short
circuit in the wire harness.
26PCONNECTOR
RED
ECM 26P CONNECTOR
REGULATOR/RECTIFIER CIRCUIT
INSPECTION
NOTE:
• The regulator/rectifier is located in the ECM.
Remove the body cover (page 2-7).
Disconnect the ECM 6P connector.
Check the connector for loose contacts of corroded
terminals.
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