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Honda CBR300RA Service Manual page 124

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2. Bank Angle Sensor Input Voltage Inspection
Turn the ignition switch OFF.
Disconnect the bank angle sensor 2P connector [1)
(page 4-33
).
Turn the ignition switch ON and engine stop switch
"
o".
Measure the voltage between the bank angle
sensor
2P connector of the wire side and ground.
Connection: Black/blue(+) - Ground(-)
Standard:
Battery voltage
Is there battery voltage?
YES
- GO TO STEP 3.
NO
- Open circuit in Black/blue wire
3. Bank Angle Sensor Signal Line Open Circuit Inspection
Turn the ignition switch OFF
.
Check for continuity between the bank angle sensor
2P connector [1) and ECM 33P (Black) connector
[2) of
the
wire side
.
Connection: Red/blue - Red/blue
TOOL:
Test probe (2 pack)
07ZAJ-RDJA 110
Is there continuity?
YES
- Inspect the bank angle sensor (page 4-
34 ).
NO
- Open circuit in Red/blue wire
MIL CIRCUIT TROUBLESHOOTING
NOTE:
[1)
R/Bu
Before starting the
inspection,
check the speedometer power input line (page 21-7
).
With The Ignition Switch ON, The MIL Does Not Come On
PGM-FI SYSTEM
[1]
[2]
R/Bu
If the engine can be started but the MIL does not come on when the ignition switch is turned ON and engine
stop
switch"()",
check as follows
:
Turn the ignition switch OFF.
Disconnect the ECM 33P
(Black)
connector (page 4-34)
.
Ground the following terminal of the wire harness side
ECM 33P
(Black)
connector [1] with a jumper wire [2].
CONNECTION: White/blue - Ground
TOOL:
Test probe (2 pack)
O?ZAJ-RDJA 110
Turn the ignition switch ON and engine stop switch
"()"
the MIL should come on
.
-
If the MIL comes on
,
replace the ECM with a known
good one and recheck the MIL ind ication
.
If the MIL does not come on, check for open circuit
in the White/blue wire between the speedometer
and ECM 33P (Black)
connector.
If the wire is
OK,
replace
the
speedometer.
[2)
[1]
I
"
I
,...
111
/_
W/Bu
L _ _
4-29

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