Honda CBR650F Service Manual page 117

dummyhead dummyhead
PGM-FI SYSTEM
3. O Sensor Heater Input Voltage Inspection
2
Turn the ignition switch ON with the engine stop
switch " ".
Measure the voltage between the wire harness side
O sensor 4P (Black) connector [1] and ground.
2
CONNECTION: Black/white (+) – Ground (–)
Is there battery voltage?
YES
NO
4. O Sensor Heater Line Open Circuit Inspection
2
Disconnect the ECM 33P (Gray) connector (page 4-
35).
Check the continuity between the wire harness side
O sensor 4P (Black) connector [1] and ECM 33P
2
(Gray) connector [2] terminals.
TOOL:
Test probe
CONNECTION: Black/blue – Black/blue
Is there continuity?
YES
NO
5. O Sensor Heater Line Short Circuit Inspection
2
Check the continuity between the wire harness side
O sensor 4P (Black) connector [1] terminal and
2
ground.
CONNECTION: Black/blue – ground
Is there continuity?
YES
NO
4-28
– GO TO STEP 4.
– Open circuit in Black/white wire
07ZAJ-RDJA110
– GO TO STEP 5.
– Open circuit in Black/blue wire
– Short circuit in Black/blue wire
– Replace the ECM with a known good one,
and recheck.
Bl/W
[1]
Bl/Bu
[1]
[1]
[2]
Bl/Bu
Bl/Bu