Honda CBR125R Owner's Manual page 128

FUEL SYSTEM (PGM-FI)
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
NO
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.
Connection: 5 (+) – 4 (–)
Standard:
0.29 – 0.71 V (throttle fully closed)
4.13 – 4.76 V (throttle fully opened)
Is there standard voltage?
YES
NO
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.
Connection: Yellow/black – Ground
Is there continuity?
YES
NO
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.
Connection: 5 – Yellow/black
Is there continuity?
YES
NO
5-36
– GO TO STEP 2.
– Replace or repair the abnormal circuit.
– • Intermittent failure
• Loose or poor contact on the ECM
33P connector
– GO TO STEP 3.
– Short circuit in Yellow/black wire
– GO TO STEP 4.
– Faulty sensor unit (TP sensor)
– Open circuit in Yellow/black wire
(4) (5)
SENSOR UNIT 5P CONNECTOR
(Wire side/female terminal)
Y/Bl
(5)
SENSOR UNIT 5P CONNECTOR
(Wire side/female terminal)
Y/Bl