Mil 8 Blinks (Tp Sensor) - Honda GL1800 Service Manual

3. ECT Sensor Resistance Inspection
Turn the ignition switch to "OFF."
Connect the ECT sensor 3P connector.
Disconnect the engine sub-wire harness 6P gray
connector.
Check the connector for loose contacts or cor-
roded terminals.
Measure the resistance between the engine sub-
wire harness side 6P gray connector terminals.
Connection: Yellow/blue — Green/red
Standard: 2.2 – 2.7 k (at 20° C/68° F)
Is the resistance within 2.2 – 2.7 k (at 20° C/68° F)?
NO – Faulty ECT sensor.
YES – GO TO STEP 4.
4. ECT Sensor Connection Inspection
Connect the engine sub-wire harness 6P gray
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 – Replace the ECM with a new one and
inspect again.

MIL 8 BLINKS (TP SENSOR)

1. TP Sensor Input Voltage Inspection
Remove the top shelter (page 2-12).
Turn the ignition switch to "OFF."
Disconnect the engine sub-wire harness 8P gray
connector.
Check the connector for loose contacts or cor-
roded terminals.
Turn the ignition switch "ON."
Measure the voltage between the main wire har-
ness side 8P gray 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 of the main wire harness.
• Loose or poorly connected ECM
black connector.
YES – GO TO STEP 2.
FUEL SYSTEM (Programmed Fuel Injection)
P GRAY CONNECTOR
the system is
Light green
Yellow/red
Yellow/blue
Green/red
P GRAY
Green/red
CONNECTOR
5-19