Honda SH300I 2006, Руководство пользователя

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FUEL SYSTEM (PGM-FI)
6-28
DTC 21-1 (O
2
SENSOR)
• Before starting the inspection, check for loose or
poor contact on the O
2
sensor cap connector and
recheck the DTC.
1. O
2
Sensor Line Open Circuit Inspection
Turn the ignition switch OFF.
Disconnect the ECM 33P connector and O
2
sen-
sor cap connector.
Check the continuity between the ECM 33P con-
nector of the wire harness side and O
2
sensor
cap connector of the wire harness side.
Are there continuity?
YES – GO TO STEP 2.
NO – Open circuit in Black/orange wire
2. O
2
Sensor Line Short Circuit Inspection
Disconnect the ECM 33P connector.
Check for continuity between the ECM 33P con-
nector of the wire harness side and ground.
Is there continuity?
YES – Short circuit in the Black/Orange wire
NO – GO TO STEP 3.
3. O
2
Sensor Inspection
Replace the O
2
sensor with a known good one
(page 6-76) and clear the DTC.
Reset the ECM (page 6-12).
Start the engine and warm the engine up to cool-
ant temperature is 80
°
C (176
°
C).
Test-ride the scooter and check the O
2
sensor
with the HDS pocket tester.
Is the DTC 21-1 indicated?
YES – Faulty ECM. Replace it with new one
and recheck
NO – Faulty original O
2
sensor
Connection: Black/Orange – No. 3
(Black/Orange)
TOOL:
Test probe
07ZAJ-RDJA110
33P CONNECTOR (Wire side of
female terminal)
CAP CONNECTOR (Wire side of
female terminal)
Bl/O
Connection: No. 3 (Black/orange) – Ground
TOOL:
Test probe
07ZAJ-RDJA110
33P CONNECTOR (Wire side of
female terminal)
Bl/O