Map Sensor Output Voltage Inspection; Map Sensor Output Line Short Circuit Inspection; Map Sensor Inspection - Honda CTX700N/ND Service Manual

PGM - FI SYSTEM
3
,
MAP Sensor Output Voltage Inspection
Turn the ignition switch OFF
.
Disconnect the sensor
unit 5 P (
Black ) connector
( page 7
-
14 )
.
Turn the ignition switch ON
.
Measure the voltage at the sensor unit
5 P ( Black )
connector [ 1 ] of the wire harness side .
Connection
: Violet / red ( +
)
-
ground ( - )
Standard
:
4.75 - 5.25 V
Is the voltage within 4.75 - 5.25 V ?
YES
-
GO TO STEP 5
.
NO
-
GO TO STEP 4
.
4 . MAP Sensor Output Line Short Circuit Inspection
Turn the ignition switch OFF .
Check for continuity between the sensor unit 5 P
( Black ) connector [ 1 ] of the wire harness side and
ground
.
Connection : Violet / red - ground
Is there continuity ?
YES
-
Short circuit in the Violet / red wire
NO
-
GO TO STEP 5
.
5
.
MAP Sensor Inspection
Replace the sensor unit with a known good one ( page 7
-
14 )
.
Turn the ignition switch OFF
.
Connect the sensor unit 5 P ( Black ) connector
.
Erase the DTCs ( page 4
-
9 )
.
Turn the ignition switch ON .
Check the MAP sensor with the MCS .
Is DTC 1 - 1 indicated ?
YES
-
Replace the ECM/PCM with a known good one
,
and recheck .
NO
-
Faulty original sensor unit ( MAP sensor )
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