Honda VFR800F 2014 Service Manual page 93

PGM-FI SYSTEM
DTG
TROUBLESHOOTING
DTC 1 (MAP SENSOR)
MAP SENSOR
Y/R
-
-
Bu/G
Probable cause
.
Open circuit in
the Yellow/red or Gray
wire between
the MAP sensor
and
ECM
.
Open or
short circuit
in
the Blue/green
wire between
the MAP sensor
and ECM
.
Faulty MAP
sensor
.
Faulty ECM
DTC 1-1
(MAP
SENSOR LOW
VOLTAGE)
{.
MAP
Sensor
SYstem
lnsPection
Check
the
MAP sensor with
the MCS'
ls
about 0
V
or below
indicated?
YES
-
GO
TO STEP 2.
NO -
lntermittent failure
2.
MAP
Sensor lnput Voltage lnspection
Remove the fuel
tank (Page
7-1
1)'
Turn
the
ignition switch OFF.
Disconne6t
the MAP sensor 3P (Gray)
connector
t1l.
Turn
tfre ignition
switch ON with
the engine stop
switch "O".
Measure
the voltage
between the
wire
harness side
MAP sensor 3P (Gray) connector
terminals'
CONNECTION:
Yellodred
(+)
- Gray
(-)
STANDARD:
4-75
-
5-25Y
ls
the
voltage
standard
value?
YES
-
GO
TO STEP 3.
NO -
GOTO STEP 5.
ECM
5V
-a-
I
5V
l-r
<
t
4-11