Honda INTERCEPTOR 2002 Service Manual page 157

FUEL SYSTEM (Programmed Fuel Injection)
5-22
Check fo r loose or poor contact on t he IAT sen-
sor connector.
Connect the IAT sensor 2P connector.
Turn t he ignition switch ON.
Check the MIL blinks.
Is the MIL blinking?
NO - Loose or poor contact on the IAT sensor
connector.
YES - GO TO STEP 2.
2. IAT Sensor Resistance Inspection
Tu rn t he ignition switch OFF.
Disconnect the IAT sensor 2P connector.
Measure the resistance at the IAT sensor termi-
nals (at 20- 30 °C/ 68- 86 ° F).
Standard: 1 -4 kQ (20- 30 °C/68- 86 °F)
Is the resistance within 1-4 kQ?
NO - Faulty IAT sensor.
YES - GO TO STEP 3.
3. IAT Sensor Power Input Line Voltage Inspection
Turn the ignition switch ON.
Measure the voltage between the IAT sensor
connector terminal of the wire harness side and
ground.
Connection: Gray/blue(+)- Ground (-)
Standard: 4.75- 5.25 V
Is the voltage within 4.75-5.25 V?
No - • Open or short circuit in Gray/ blue
wire.
• Loose o r poor contact on the ECM
connectors.
YES - GO TO STEP 4.
4. IAT Sensor Signal Line Line Voltage Inspection
Measure the voltage at the IAT sensor co nnector
of the wire harness side.
Connection: Gray/blue(+)- Green/orange(-)
Standard: 4.75- 5.25 V
Is the voltage within 4. 75 - 5.25 V?
No - • Open or short circuit in Green/
orange w ire.
• Loose or poor contact on the ECM
connectors.
YES - Replace t he ECM with a new one, and
inspect it again.
IAT SENSOR 2P CONNECTOR
IAT SENSOR
IAT SENSOR 2P CONNECTOR
IAT SENSOR 2P CONNECTOR