Dtc 7-2 (Ect Sensor High Voltage) - Honda MUV700 big red Service Manual

FUEL SYSTEM (PGM-FI)
6-18
4. ECT Sensor Line Short Circuit Inspection
Disconnect the PCM 33P gray connector.
Check for continuity between the wire harness
side EeT sensor 2P connector terminal and
ground.
Connection: Black/ blue - ground
Is there continuity?
YES - Short circuit in the Black/blue wire.
NO - Replace the PCM with a known good
one and recheck.
OTC 7-2 (ECT SENSOR HIGH
VOLTAGE)
• Before starting the troubleshooting, check the
Eel sensor 2P connector for loose or poor con-
tacts, and recheck the DTe.
1. Eel Sensor System Inspection
Turn the ignition switch to ON (I).
Check the EeT sensor with the HDS pocket
tester.
Is about 5 V indicated?
YES - GO TO STEP 2.
ND _ . Intermittent failure.
• Loose or poor contact on the ECT
sensor 2P connector.
2. EeT Sensor Inspectio n
Turn the ignition switch to OFF (0).
Disconnect the ECT sensor 2P connect or.
Connect the wi re harness side 2P connector ter·
minals with a jumper wire.
Connection: Black/ blue - Green/ black
Turn the ignition switch to ON (I).
Check the ECT sensor with the HDS pocket
tester.
Is about 0 V indicated7
YES - Faulty ECT sensor.
NO - GO TO STEP 3.
Eel SENSOR 2P CONNECTOR
(Terminal side of the wire harness)
Black/blue
ECl SENSOR 2P CONNECTOR
(Terminal side of the wire harness)
T"
J ~
Black/blue
Green/black
JUM3R WIRE