Dtc 7-2 (Ect Sensor High Voltage) - Honda CTX700N/ND Service Manual

PGM
-
FI SYSTEM
DTC 7 - 2 ( ECT SENSOR HIGH VOLTAGE )
NOTE :
• Before starting
the inspection , check for loose
or poor contact on the ECT sensor 2 P ( Black ) connector
and
ECM / PCM 33 P connector ( s ) , then recheck the DTC .
•
If the PCM is replaced , perform the Clutch Initialize Learning Procedure ( page 12
- 81 ) ( CTX
700 D / ND )
.
1 . ECT Sensor System Inspection
Turn the ignition switch ON and engine stop switch " O " .
Check the ECT sensor with
the
MCS
.
Is about 5 V indicated ?
YES
-
GO TO STEP 2
.
NO
-
Intermittent failure
2 .
3 .
ECT Sensor Inspection
Turn the ignition switch OFF
.
Disconnect the ECT sensor 2 P ( Black ) connector
( page 4
-
33 )
.
Connect the ECT sensor 2 P ( Black ) connector [ 1 ]
terminals at the wire harness side with a jumper wire
[ 2 ]
.
Connection : Pink / white - Green/ yellow
Turn the ignition switch ON
.
Check the ECT sensor with the MCS .
Is about 0 V indicated ?
YES
-
Inspect the ECT sensor ( page 22
-
13 ) .
NO
-
GO TO STEP 3 .
ECT Sensor Line Open Circuit Inspection
Turn the ignition switch OFF .
Remove the jumper wire .
Disconnect the following :
-
ECM 33 P ( Black ) connector ( page 4
-
34 )
( CTX 700 / A / N / NA )
-
PCM 33 P ( Gray ) connector ( page 4
-
34 )
( CTX 700 D / ND )
Check for continuities between the ECM / PCM 33 P
connector [ 1 ] and ECT sensor 2 P ( Black ) connector
[ 2 ]
of the wire harness side .
Connection : Pink / white - Pink / white
Green/ yellow - Green/ yellow
TOOL :
1
G / Y P / W
[ 2 ]
Q
G/ Y
G/ Y
P / W
P /
W
Q
[ 2 ]
1
Test probe , 2 packs 07 ZAJ - RDJA 110
Is there continuity ?
YES
-
Replace the ECM/ PCM with a known good one , and recheck .
NO
-
•
Open circuit in the Pink / white wire
• Open circuit in the Green / yellow wire
I
A A
C