Honda NSS250S Manual page 214

FUEL SYSTEM (PGM-FI)
3. ECT Sensor Open Circuit Inspection
Turn the ignition switch OFF.
Check the continuity between the test harness
and ECT sensor 3P connector of the wire side.
CONNECTION: 6 – Pink/white
Is there continuity?
YES
NO
4. ECT Sensor Short Circuit Inspection
Check the continuity between the ECT sensor
connector of the wire side and ground.
CONNECTION: Pink/white – Ground
Is there continuity?
YES
NO
5. ECT Sensor Resistance Inspection
Turn the ignition switch OFF.
Measure the resistance at the ECT sensor termi-
nals.
CONNECTION: Pink/white – Green/orange
STANDARD:
Is the resistance within 2.3 – 2.6 k Ω (20 ° C/68 ° F)?
YES
NO
6-60
maxiscooter-club.ru
10 – Green/orange
– GO TO STEP 4.
– • Open circuit in Pink/white wire
• Open circuit in Green/orange wire
– Short circuit in Pink/white wire
– GO TO STEP 5.
2.3 – 2.6 kΩ (20°C/68°F)
– Replace the PCM with a known good
one, and recheck.
– Faulty ECT sensor
ECT SENSOR 3P CONNECTOR
(Wire side/female terminals)
(6)
(10)
TEST HARNESS PIN BOX
ECT SENSOR 3P CONNECTOR
(Wire side/female terminals)
Pink/white
ECT SENSOR (Sensor side/male terminals)
Green/orange
Pink/
white
Green/orange
Pink/white