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4. Sensor Unit Input Voltage Line Open Circuit
Inspection
Check for continuities between the test harness
and sensor unit 5P connector of the wire side.
Connection: 6 – White/red
Is there continuity?
YES
NO
DTC TROUBLESHOOTING
DTC 1-1 (MAP SENSOR LOW
VOLTAGE)
1. MAP Sensor System Inspection
Turn the ignition switch ON (and engine stop
switch " ": CM and U type).
Check the MAP sensor with the HDS pocket
tester.
Is about 0 V indicated?
YES
NO
2. Sensor Unit Power Line Inspection
Check the sensor unit power line inspection
(page 5-15).
Is the sensor unit power line normal?
YES
NO
3. MAP Sensor Output Voltage Inspection
Turn the ignition switch OFF.
Disconnect the sensor unit 5P connector.
Turn the ignition switch ON (and engine stop
switch " ": CM and U type).
Measure the voltage at the sensor unit 5P con-
nector of the wire side.
Connection:
Light green/yellow (+) – Green/orange (–)
Standard:
Is the voltage within 3.80 – 5.25 V?
YES
NO
4 – Green/orange
– Intermittent failure
– • Open circuit in White/red wire
• Open circuit in Green/orange wire
– GO TO STEP 2.
– • Intermittent failure
• Loose or poor contact on the sensor
unit 5P connector
– GO TO STEP 3.
– Replace or repair the abnormal circuit.
3.80 – 5.25 V
– GO TO STEP 5.
– GO TO STEP 4.
FUEL SYSTEM (PGM-FI)
(4)
(6)
SENSOR UNIT 5P CONNECTOR
(Wire side/female terminals)
SENSOR UNIT 5P CONNECTOR
(Wire side/female terminals)
G/O
G/O
W/R
Lg/Y
5-17
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Chapters
Table of Contents
Troubleshooting
Need help?
Do you have a question about the CBR125R and is the answer not in the manual?
Questions and answers
Hey guys I have oil dripping from crankcase overflow, very minimal, doesn’t happen on idle only when been riding for a while, I’ve done an oil change and correct amount of oil displayed on dipstick when warm, what could be the issue/options
Oil dripping from the crankcase overflow on a Honda CBR125R after riding for a while could be caused by:
1. Overfilled engine oil – too much oil can increase pressure and cause overflow.
2. Clogged or dirty oil strainer screen – this can restrict oil flow and increase internal pressure.
3. Damaged or worn sealing rubber on the oil strainer screen – may cause leaks.
4. Oil leaks not properly fixed – such as from the crankcase cover or other seals.
Check oil level, clean the strainer screen, inspect seals, and ensure proper installation.
This answer is automatically generated
Hello there, my name is Traydon I have been riding for about 2 months now I’m completely new to keeping motorbikes Recently I’ve had an issue with my motorbike it’s a Honda cbr 125cc 2011 model. I have an idle problem will start but struggles to keep idle and have to keep using the throttle from it not cutting out it also cuts out at traffic lights due to not liking to stop Revving. Tray.
The idle problem in a 2011 Honda CBR125R that struggles to maintain idle and cuts out at traffic lights could be caused by an issue with the air cut valve or air cut system in the carburetor. Even after a carb rebuild with new jets and seals, the problem persisted until attention was given to this specific component. A faulty or malfunctioning air cut valve can cause over-revving, poor idling, and stalling when coming to a stop.
This answer is automatically generated