Honda CBR125R, Owner'S Manual

Page: 113 / 430

FUEL SYSTEM (PGM-FI)
5-21
2. ECT Sensor Inspection
Turn the ignition switch OFF.
Disconnect the ECT sensor 3P connector.
Connect the ECT sensor 3P connector terminals
at the wire side with a jumper wire.
Turn the ignition switch ON (and engine stop
switch " ": CM and U type).
Check the ECT sensor with the HDS pocket
tester.
Is about 0 V indicated?
YES – Inspect the ECT sensor (page 19-13).
NO – GO TO STEP 3.
3. ECT Sensor Open Circuit Inspection
Turn the ignition switch OFF.
Remove the jumper wire.
Disconnect the ECM 33P connector.
Check the continuities at the Yellow/blue and
Green/orange wires between the ECM 33P and
ECT sensor 3P connectors.
Is there continuity?
YES – Replace the ECM with new one, and
recheck.
NO – • Open circuit in Yellow/blue wire
• Open circuit in Green/orange wire
DTC 8-1 (TP SENSOR LOW VOLTAGE)
1. TP Sensor System Inspection
Turn the ignition switch ON (and engine stop
switch " ": CM and U type).
Check the TP sensor with the HDS pocket tester
when the throttle fully closed.
Is about 0 V indicated?
YES – • Intermittent failure
• Loose or poor contact on the sensor
unit 5P connector
NO – GO TO STEP 2.
2. Sensor Unit Power Line Inspection
Check the sensor unit power line inspection
(page 5-15).
Is the sensor unit power line normal?
YES – GO TO STEP 3.
NO – Replace or repair the abnormal circuit.
Connection: Yellow/blue – Green/orange
JUMPER WIRE
ECT SENSOR 3P CONNECTOR
(Wire side/female terminals)
Y/Bu
G/O
Connection: 24 (Yellow/blue) – Yellow/blue
4 (Green/orange) – Green/orange
TOOL:
Test probe
07ZAJ-RDJA110
ECT SENSOR 3P CONNECTOR
(Wire side/female terminals)
G/O
Y/Bu
(24)
(4)
ECM 33P CONNECTOR
(Wire side/female terminals)