Honda NHX110 User Manual

FUEL SYSTEM (Programmed Fuel Injection)
6-21
SENSOR UNIT POWER/GROUND
CIRCUIT INSPECTION
MIL 1 and 8 BLINKS OR 1,8,9 ALL
BLINKS (MAP, TP, IAT SENSOR)
1. Connector Inspection
Erase the self diagnosis memory data from the
ECM (page 6-15).
Turn the ignition switch "OFF".
Disconnect the sensor unit 5P connector and
ECM 33P connector.
Check for loose or poor contact on the sensor
unit 5P connector and ECM 33P connector.
Connect the sensor unit 5P connector and ECM
33P connector.
Turn the ignition switch "ON".
Check if the MIL blinks.
Is the MIL blinking?
NO – Loose or poor contact on the sensor
unit 5P connector and ECM 33P connec-
tor.
YES – GO TO STEP 2.
2. Sensor Unit Input Voltage Inspection
Turn the ignition switch "OFF".
Disconnect the sensor unit 5P connector.
Turn the ignition switch "ON".
Measure the voltage between the sensor unit 5P
connector of the wire harness side.
Is the voltage within 4.75 – 5.25 V?
YES – Replace the sensor unit with a new one,
and recheck.
NO – GO TO STEP 3.
3. Sensor Unit Circuit Continuity Inspection
Turn the ignition switch "OFF".
Disconnect the ECM 33P connector.
Check for continuity between the sensor unit 5P
connector and the ECM 33P connector of the
wire harness side.
Check the continuity between the sensor unit 5P
connector of the wire harness side and ground.
Are the above inspections normal?
YES – Replace the ECM with a new one, and
recheck.
NO – • Open circuit in Yellow/Orange wire.
• Open circuit in Green/Orange wire.
• Short circuit in Yellow/Orange wire.
ECM
SENSOR UNIT
33P CONNECTOR
5P CONNECTOR
MIL
CONNECTION:Yellow/Orange (+) –
Green/Orange (–)
STANDARD: 4.75 – 5.25 V
ECM
SENSOR
UNIT
5P CONNECTOR
CONNECTION STANDARD
Yellow/Orange – Yellow/Orange
Continuity
Green/Orange – Green/Orange
CONNECTION STANDARD
Yellow/Orange – Ground No continuity
ECM
SENSOR
UNIT
33P CONNECTOR
5P CONNECTOR

Honda NHX110 Specifications

General

Brand	Honda
Model	NHX110
Category	Scooter
Language	English