Mil 19 Blinks (Ignition Pulse Generator) - Honda GL1800 Service Manual

FUEL SYSTEM (Programmed Fuel Injection)

MIL 19 BLINKS (IGNITION PULSE GENERATOR)

1. Ignition Pulse Generator Peak Voltage
Inspection at ECM
Remove the top shelter (page 2-12).
Turn the ignition switch to "OFF."
Disconnect the ECM 22P gray connector.
Check the connector for loose contacts or cor-
roded terminals.
Connect the peak voltage adaptor to the digital
multimeter (page 5-10).
Connect the test harness set to the ECM connec-
tors (page 5-11).
Turn the ignition switch to "ON."
Crank the engine with the starter motor and
measure the ignition pulse generator peak volt-
age at the test pin box terminals.
Connection: No. 41 (+) – No. 21 (–)
Standard: 0.7 V minimum
Is voltage at least 0.7 V?
NO
YES
2. Ignition Pulse Generator Connection Inspection
Turn the ignition switch to "OFF."
Remove the ECM test harness and connect the
ECM connectors.
Reset the self-diagnostic memory (page 5-9).
Check that the engine can be started by cranking
it with the starter motor for 10 seconds or more.
Does the engine start?
YES
NO
3. MIL System Inspection
Turn the ignition switch to "OFF."
Short the service check connector terminals with
a jumper wire (page 5-8).
Turn the ignition switch to "ON" and check that
the MIL blinks.
Is the MIL blinking?
NO
YES
5-36
– GO TO STEP 4.
– GO TO STEP 2.
– Temporary failure; the
normal.
– GO TO STEP 3.
– GO TO STEP 4.
– Replace the ECM with a new one and
inspect again.
CM 22P GRAY
CONN CTOR
No. 21 (–)
system is
PEAK VOLTAGE ADAPTOR
No. 41 (+)