Dtc Troubleshooting; Dtc 1-1 (Map Sensor Low Voltage) - Honda CTX700N/ND Service Manual

PGM - FI SYSTEM
3
.
Sensor Unit Power Line Open Circuit Inspection
Disconnect the following :
-
ECM 33 P
( Black ) connector [
1 ] ( page 4
-
34 )
( CTX 700 / A / N / NA )
-
PCM 33 P ( Black ) [ 2 ] / 33 P (Gray) [ 3 ] connectors
( page 4
-
34 ) ( CTX 700 D / ND )
Check for continuities between the sensor unit 5 P
( Black ) connector [ 4 ] and ECM / PCM
33
P connector
.
Connection
:
CTX 700 / A / N / NA :
Yellow /
red
- Yellow / red
Green / yellow
-
Green/ yellow
CTX 700 D / ND :
Yellow / violet
-
Yellow / violet
Green / yellow
-
Green/ yellow
TOOL :
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 Yellow / red wire
*
Open
circuit in the Yellow / violet wire
•
Open circuit in the Green / yellow wire
DTC TROUBLESHOOTING
DTC 1
-
1 ( MAP SENSOR LOW VOLTAGE )
NOTE
:
If the PCM is replaced , perform the Clutch Initialize Learning Procedure ( page 12
-
81 ) ( CTX 700 D / ND )
.
1
.
MAP Sensor System Inspection
Turn the ignition switch ON and engine stop
switch
"
o
" .
Check the MAP sensor with the MCS .
Is about 0 V indicated ?
YES
-
GO TO STEP 2
.
NO
-
Intermittent failure
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 .
CTX 700 / A / N / NA :
[ 1 ]
Y / R
a
Y / R
tnB
G / Y
[ 4 ]
CTX 700 D / ND :
G / Y
[ 2 ]
Y / V
e
[ Y / V
1
r
—
i
1
I
f
*
T
G / Y
ZL
[ 4 ]
G/ Y \
[ 3 ]
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