Honda CBR650RA Shop Manual page 155

dummyhead dummyhead
P0117 (ECT SENSOR LOW VOLTAGE)
1. ECT Sensor System Inspection
Check the ECT sensor with the MCS or GST.
Is about 0 V indicated?
YES
NO
2. ECT Sensor System Inspection with Connector
Disconnected
Turn the ignition switch OFF.
Disconnect the ECT sensor 2P (Blue) connector
(page 4-79).
Check the ECT sensor with the MCS or GST.
Is about 0 V indicated?
YES
NO
3. ECT Sensor Output Line Short Circuit Inspection
Turn the ignition switch OFF.
Disconnect the ECM 33P (Gray) connector (page 4-
76).
Check for continuity between the wire harness side
ECT sensor 2P (Blue) connector [1] terminal and
ground.
CONNECTION: Pink/yellow – Ground
Is there continuity?
YES
NO
P0118 (ECT SENSOR HIGH VOLTAGE)
• Before starting the inspection, check for loose or
poor contact on the ECT sensor 2P (Blue), ECM 33P
(Black) and 33P (Gray) connectors, and recheck the
DTC.
1. ECT Sensor System Inspection
Check the ECT sensor with the MCS or GST.
Is about 5 V indicated?
YES
NO
2. ECT Sensor System Inspection with Jumper
Wire
Turn the ignition switch OFF.
Disconnect the ECT sensor 2P (Blue) connector
(page 4-79).
Connect the wire harness side ECT sensor 2P
(Blue) connector [1] terminals with a jumper wire [2].
CONNECTION: Pink/yellow – Green/orange
Check the ECT sensor with the MCS or GST.
Is about 0 V indicated?
YES
NO
– GO TO STEP 2.
– Intermittent failure
– GO TO STEP 3.
– Faulty ECT sensor
– Short circuit in Pink/yellow wire
– Replace the ECM with a known good one,
and recheck.
– GO TO STEP 2.
– Intermittent failure
– GO TO STEP 4.
– GO TO STEP 3.
PGM-FI SYSTEM
[1]
P/Y
[1]
P/Y
G/O
[2]
4-51