Mil 10 Blinks (Baro Sensor) - Honda GL1800 Service Manual

MIL 10 BLINKS (BARO SENSOR)

1. BARO Sensor Connection Inspection
Remove the top shelter (page 2-12).
Turn the ignition switch to "OFF."
Disconnect the BARO sensor 3P connector.
Check the connector for loose contacts or cor-
roded terminals.
Connect the BARO sensor 3P connector.
Place the motorcycle on its side stand.
Turn the ignition switch to "ON."
Check that the MIL blinks.
Is the MIL blinking?
NO – Temporary failure;
normal.
YES – GO TO STEP 2.
2. BARO Sensor Input Line Voltage Inspection
Turn the ignition switch to "OFF."
Disconnect the BARO sensor 3P connector.
Turn the ignition switch to "ON."
Measure the voltage between the wire harness
side 3P connector terminal and ground.
Connection: Yellow/red (+) – Ground (–)
Standard: 4.75 – 5.25 V
Is the voltage within 4.75 – 5.25 V?
NO – • Open or short circuit in the Yellow/
red wire.
• Loose or poorly connected ECM
black connector.
YES – GO TO STEP 3.
3. BARO Sensor Line Voltage Inspection
Measure the voltage between the wire harness
side 3P connector terminals.
Connection: Yellow/red (+) – Green/red (–)
Standard: 4.75 – 5.25 V
Is the voltage within 4.75 – 5.25 V?
NO – • Open circuit in the Green/red wire.
• Loose or poorly connected ECM
black connector.
YES – GO TO STEP 4.
4. BARO Sensor Line Voltage Inspection
Measure the voltage between the wire harness
side 3P connector terminals.
Connection:
Light green/black (+) – Green/red (–)
Standard: 4.75 – 5.25 V
Is the voltage within 4.75 – 5.25 V?
NO – Open or short circuit in the Light green/
black wire.
YES – GO TO STEP 5.
FUEL SYSTEM (Programmed Fuel Injection)
the system is
Light green/black
ellow/red
Green/red
BARO SENSOR
CONNECTOR
5-23