Honda CBR125R, Руководство пользователя

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FUEL SYSTEM (PGM-FI)
5-37
MIL 9 BLINKS (IAT 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. IAT Sensor Output Voltage Inspection 1
Turn the ignition switch ON (and engine stop
switch " ": CM and U type).
Measure the voltage at the ECM test harness ter-
minals.
Is the voltage within 2.7 – 3.1 V (20
°
C/68
°
F)?
YES – • Intermittent failure
• Loose or poor contact on the ECM
33P connector
NO – GO TO STEP 3.
3. IAT Sensor Output Voltage Inspection 2
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.
Is the voltage within 4.75 – 5.25 V?
YES – GO TO STEP 6.
NO – GO TO STEP 4.
4. IAT Sensor Voltage Input Line Short Circuit
Inspection
Check for continuity between the sensor unit 5P
connector of the wire side and ground.
Is there continuity?
YES – Short circuit in Gray/blue wire
NO – GO TO STEP 5.
Connection: 14 (+) – 4 (–)
Standard:
2.7 – 3.1 V (20
°
C/68
°
F)
(14) (4)
Connection: Gray/blue (+) – Green/orange (–)
Standard:
4.75 – 5.25 V
Gr/Bu
SENSOR UNIT 5P CONNECTOR
(Wire side/female terminals)
G/O
Connection: Gray/blue – Ground
Gr/Bu
SENSOR UNIT 5P CONNECTOR
(Wire side/female terminal)