Dtc 7-2 (Ect Sensor High Voltage) - Honda 2010 CRF250R Service Manual

FUEL SYSTEM (PGM·FI)
5-20
DTC 7·2 (ECT SENSOR HIGH
VOLTAGE)
Before starting the inspection. check for loose or
poor contact on the Eel sensor 2P (Btack)
connector and ECM 33P connector, then recheck
the DTG.
1. EeT Sensor System Inspection
Connect the 12 V battery CeCM" selector switch is
ON) (page 5-12),
Check the EeT sensor with the HOS.
Is about 5 V indicated?
YES - GO TO STEP 2.
ND - Intermittent failure
2. EeT Sensor Inspection
Turn the "ECM" selector switch OFF.
Disconnect the EeT sensor 2P (Black) connector.
Connect the
Eer
sensor 2P (Black) connector
terminals with a jumper wire.
Connection : Pink - Green/red
Turn the "ECM" selector switch ON .
Check the EeT sensor with the HOS .
Is about
0
V indicated?
YES - Inspect the
Eel
sensor (page 5-57).
NO - GO TO STEP 3.
3.
Eer
Sensor Open Circuit Inspection
Turn the "ECM" selector switch OFF.
Remove the jumper wire.
Disconnect the ECM 33P (Black) connector.
Check for continuity between the ECT sensor 2P
(Black) and ECM 33P (Black) connectors.
Connection: 20 - Pink
22 - Green/red
TOOL:
Tes t probe 07ZAJ·ROJA 110
Is there continuity?
YES - Replace the ECM with a known good one ,
and recheck.
NO Open circui t in Pink wire
• Open circuit in Green/red wire
2P(BLACK)CON NECTOR
(Wire side/female terminals)
\~
GtR
p
JUMPER WIRE
2P (BLACK) CONNECTOR
(Wire sldelfemale terminals)
, - - - - - - { Q
2 2 - .
2 0
"---- --{ Q
33P (BLACK ) CONNECTOR
(Wire side/female terminals)
p