Honda SH125 Manual page 101

FUEL SYSTEM (Programmed Fuel Injection)
DTC TROUBLESHOOTING
DTC 1-1 (MAP SENSOR LOW
VOLTAGE)
1. Recheck DTC
Erase the self-diagnostic memory t o reset the
ECM (page 5-8).
Start the engine and let it idle.
Stop the engine.
Turn the ignition switch t o ON and check the
MAP sensor with the HDS.
I s the DTC I - I indicated?
NO
YES
-
Temporarily failure; the system is nor-
mal.
-
Replace the throttle body/ECM assern-
bly with a new one, and inspect again.
DTC 1-2 (MAP SENSOR HIGH
VOLTAGE)
1. MAP Sensor (Inside of ECM) Open Circuit
Inspection
Erase the self-diagnostic memory to reset the
ECM (page 5-8).
Start the engine and let it idle.
Stop the engine.
Turn the ignition switch t o ON and check the
MAP sensor wi th the HDS.
Is the DTC 1-2 indicated?
NO
YES
-
Temporarily failure; the system is nor-
mal.
-
Replace the throttle body/ECM assem-
bly
with
a new one, and inspect again.
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