Honda CBR650RA Shop Manual page 162

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PGM-FI SYSTEM
5. Fuel Injector Signal Line Short Circuit Inspection
Check for continuity between the wire harness side
injector 2P (Black) connectors [1] terminal and
ground.
CONNECTION:
No. 1: Pink/white – Ground
No. 2: Pink/green – Ground
No. 3: Pink/black – Ground
No. 4: Pink/yellow – Ground
Is there continuity?
YES
NO
P0131 (O
1. Recheck DTC
Erase the DTC (page 4-9).
Start the engine and warm it up until the coolant
temperature is 80°C (176°F).
Stop the engine.
Check the O
Is the P0131 indicated?
YES
NO
2. O Sensor Output Line Short Circuit Inspection
2
Turn the ignition switch OFF.
Disconnect the following:
– O
2
– ECM 33P (Black)/33P (Gray) connectors (page
4-76)
Check the continuity between the wire harness side
O sensor 4P (Black) connector [1] terminal and
2
ground.
CONNECTION: White/green – Ground
Is there continuity?
YES
NO
3. O Sensor Inspection
2
Replace the O
(page 4-80).
Connect the ECM 33P connectors.
Erase the DTC (page 4-9).
Start the engine and warm it up until the coolant
temperature is 80°C (176°F).
Stop the engine.
Check the O
Is the P0131 indicated?
YES
NO
4-58
– • Short circuit in Pink/white wire
• Short circuit in Pink/green wire
• Short circuit in Pink/black wire
• Short circuit in Pink/yellow wire
– Replace the ECM with a known good one,
and recheck.
SENSOR LOW VOLTAGE)
2
sensor with the MCS or GST.
2
– GO TO STEP 2.
– Intermittent failure
sensor 4P (Black) connector (page 2-18)
– Short circuit in White/green wire
– GO TO STEP 3.
sensor with a known good one
2
sensor with the MCS or GST.
2
– Replace the ECM with a known good one,
and recheck.
– Faulty original O sensor
2
[1]
No. 1: P/W
No. 2: P/G
No. 3: P/Bl
No. 4: P/Y
[1]
W/G