Dtc 8-1 (Tp Sensor Low Voltage) - Honda CTX700N/ND Service Manual

PGM - FI SYSTEM
DTC 8 - 1 ( TP SENSOR LOW VOLTAGE )
NOTE :
• Before starting the inspection , check for
loose or poor
contact on the sensor unit 5 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
.
TP Sensor System Inspection
Turn the ignition switch ON and engine stop switch "
Q
"
.
Check the TP sensor
with the MCS with the throttle
fully closed
.
Is about 0 V indicated ?
YES
-
Intermittent failure
NO
-
GO TO STEP 2 .
2
.
Sensor Unit Power Line Inspection
Check the sensor unit power line inspection ( page 4
- 11 ) .
.
Is the sensor unit power line normal ?
YES
-
GO TO STEP 3 .
NO
-
Replace or repair the abnormal circuit
.
3 . TP Sensor Output Line Short Circuit Inspection
Turn the ignition switch OFF .
Disconnect the sensor unit 5 P ( Black ) connector
( page 7
-
14 )
.
Check for continuity between the sensor unit 5 P
( Black ) connector [ 1
] of the wire harness side and
ground
.
Connection
:
Red / yellow - Ground
Is there continuity ?
YES
-
Short circuit in the Red / yellow wire
NO
-
GO TO STEP 4
.
4
.
TP Sensor Output Line Open Circuit Inspection
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 continuity between the ECM / PCM 33 P
connector [ 1 ] and sensor unit 5 P ( Black ) connector
[ 2 ] of the wire harness side
.
Connection : Red / yellow - Red / yellow
TOOL
:
Test probe , 2 packs 07 ZAJ - RDJA 110
Is there continuity ?
YES
-
GO TO STEP 5 .
NO
- Open circuit in the Red / yellow wire
R / Y
R / Y
n
[ 2 ]
m
j M it
R / Y
—
( QH
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