Honda CBR650RA Shop Manual page 124

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PGM-FI SYSTEM
4. IAT Sensor Inspection
Replace the IAT sensor with a new one.
Erase the DTC (page 4-9).
Turn the ignition switch ON and wait for 10 seconds.
Check the DTC with GST or MCS.
Is same DTC indicated?
YES
NO
DTC P0115
Probable cause:
• Faulty ECT sensor or its related circuit
• Faulty ECM
Symptom/Fail-safe function:
• Hard to start at a low temperature
• Exhaust gas too lean or too rich
• Fuel consumption deterioration
• Driveability deterioration
1. ECT Sensor Inspection
Replace the ECT sensor with a new one.
Erase the DTC (page 4-9).
Start the engine and wait for 10 minutes.
Stop the engine and wait an hour.
Check the DTC with GST or MCS.
Is same DTC indicated?
YES
NO
DTC P0117/DTC P0118
Probable cause:
• Faulty ECT sensor or its related circuit
• Faulty ECM
Symptom/Fail-safe function:
• Hard to start at a low temperature
• Driveability deterioration
1. ECT Sensor Output Line Open Circuit Inspection
Disconnect the ECM 33P (Gray) connector (page 4-
76).
Disconnect the ECT sensor 2P (Blue) connector
(page 4-79).
Check for continuity between the wire harness side
ECT sensor 2P (Blue) connector [1] and ECM 33P
(Gray) connector [2].
CONNECTION: Pink/yellow – Pink/yellow
Is there continuity?
YES
NO
4-20
– Replace the ECM with a new one, and
recheck.
– Faulty original IAT sensor.
– Replace the ECM with a new one, and
recheck.
– Faulty original ECT sensor
– GO TO STEP 2.
– Open circuit in the Pink/yellow wire
P/Y
[1]
(Terminal side of the wire harness)
[2]
P/Y