Honda LEAD 110 2009 Service Manual page 134

3. TP Sensor 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.
CONNECTION
White/Red – White/Red
Check the continuity between the sensor unit 5P
connector of the wire harness side and ground.
CONNECTION
White/Red – Ground
Are the above inspections normal?
YES – Replace the ECM with a new one, and
recheck.
NO – • Open circuit in White/Red wire.
• Short circuit in White/Red wire.
MIL 9 BLINKS (IAT SENSOR)
1. Recheck MIL Blinks
Erase the self diagnosis memory data from the
ECM (page 6-15).
Turn the ignition switch "ON".
Check the MIL blinks.
How many times does MIL blink?
1 and 8 or 1,8,9 all blinks – GO TO SENSOR UNIT
POWER/GROUND CIRCUIT INSPECTION
(page 6-21).
9 blinks – GO TO STEP 2.
2. IAT Sensor Resistance Inspection
Turn the ignition switch "OFF".
Disconnect the sensor unit 5P connector.
Measure the resistance between the sensor unit
5P connector terminals.
CONNECTION: C – E
STANDARD: 1 – 4 kΩ (20°C/68°F)
Is the resistance within 1 – 4 k Ω (20 ° C/68 ° F)?
NO – Replace the sensor unit with a new one,
and recheck. (Faulty IAT sensor)
YES – GO TO STEP 3.
FUEL SYSTEM (Programmed Fuel Injection)
STANDARD
Continuity
STANDARD
No continuity
33P CONNECTOR
A B C D E
5P CONNECTOR
5P CONNECTOR
SENSOR
UNIT
ECM
MIL
SENSOR
UNIT
6-25