Honda CBR650F Service Manual page 112

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DTC 12 (No. 1 FUEL INJECTOR)/
DTC 13 (No. 2 FUEL INJECTOR)/
DTC 14 (No. 3 FUEL INJECTOR)/
DTC 15 (No. 4 FUEL INJECTOR)
Probable cause
• Open circuit in Black/white wire between the main
relay and fuel injector
• Open or short circuit in Pink/green (No. 1) or Pink/
blue (No. 2) or Pink/white (No. 3) or Pink/black (No.
4) wire between the fuel injector and ECM
• Faulty fuel injector
• Faulty ECM
DTC 12-1 (No. 1 FUEL INJECTOR)/
DTC 13-1 (No. 2 FUEL INJECTOR)/
DTC 14-1 (No. 3 FUEL INJECTOR)/
DTC 15-1 (No. 4 FUEL INJECTOR)
• Before starting the inspection, check for loose or
poor contact on the fuel injector 2P (Black) and ECM
33P (Black) connectors, and recheck the DTC.
1. Recheck DTC
Erase the DTC (page 4-7).
Start the engine and check the fuel injector with the
MCS.
Is the DTC 12-1, 13-1, 14-1 or 15-1 indicated?
YES
NO
2. Fuel Injector Input Voltage Inspection
Turn the ignition switch OFF.
Lift the fuel tank and support it (page 3-4).
Disconnect the fuel injector 2P (Black) connector.
Turn the ignition switch ON with the engine stop
switch " ".
Measure the voltage between the wire harness side
injector 2P (Black) connector [1] terminal and
ground.
CONNECTION: Black/white (+) – Ground (–)
Is there battery voltage?
YES
NO
From main relay
FUEL INJECTOR Bl/W
– GO TO STEP 2.
– Intermittent failure
– GO TO STEP 3.
– Open circuit in Black/white wire
No. 1: P/G
No. 2: P/Bu
No. 3: P/W
No. 4: P/Bl
PGM-FI SYSTEM
ECM
[1]
Bl/W
4-23