Honda CBR125R, Owner'S Manual

Page: 128 / 430

FUEL SYSTEM (PGM-FI)
5-36
MIL 8 BLINKS (TP SENSOR)
1. Sensor Unit Power Line Inspection
Check the sensor unit power line inspection
(page 5-16).
Is the sensor unit power line normal?
YES – GO TO STEP 2.
NO – Replace or repair the abnormal circuit.
2. TP Sensor Output Voltage
Turn the ignition switch ON (and engine stop
switch " ": CM and U type).
Measure the TP sensor output voltage at the
ECM test harness terminals.
Is there standard voltage?
YES – • Intermittent failure
• Loose or poor contact on the ECM
33P connector
NO – GO TO STEP 3.
3. TP Sensor Output Line Short Circuit Inspection
Turn the ignition switch OFF.
Disconnect the sensor unit 5P connector.
Check for continuity between the sensor unit 5P
connector of the wire side and ground.
Is there continuity?
YES – Short circuit in Yellow/black wire
NO – GO TO STEP 4.
4. TP Sensor Voltage Input Line Open Circuit
Inspection
Check for continuity between the sensor unit 5P
connector of the wire side and ECM test harness.
Is there continuity?
YES – Faulty sensor unit (TP sensor)
NO – Open circuit in Yellow/black wire
Connection: 5 (+) – 4 (–)
Standard:
0.29 – 0.71 V (throttle fully closed)
4.13 – 4.76 V (throttle fully opened)
(5) (4)
Connection: Yellow/black – Ground
Y/Bl
SENSOR UNIT 5P CONNECTOR
(Wire side/female terminal)
Connection: 5 – Yellow/black
SENSOR UNIT 5P CONNECTOR
(Wire side/female terminal)
(5)
Y/Bl