Dtc 1-2 (Map Sensor High Voltage) - Honda 2010 CRF250R Service Manual

5. MAP Sensor Inspection
Connect the ECM 33P (Black) connector.
Replace the MAP sensor with a known good one
(page 5-55).
Erase the oTC's (page 5-14).
Turn the ~ECM· selector switch ON .
Check the MAP sensor with the HDS.
Is
OTe 1-1
indicated?
YES - Replace the ECM with a known good one,
and recheck.
NO - Faulty original MAP sensor
DTC 1·2 (MAP SENSOR HIGH
VOLTAGE)
Before starting the inspection, check for loose or
poor contact on the MAP sensor 3P (Black)
connector and ECM 33P connector, then recheck
the OTC .
1. MAP Sensor System Inspection 1
Connect the 12 V battery (-ECM" seleclor switch is
ON) (page 5-12).
Ched< the MAP sensor with the HOS.
ts about 5 V indicated?
YES - GO TO STEP 2.
NO - Intermittent failure
2. MAP Sensor System Inspection 2
Turn the "ECM" selector switch OFF.
Disconnect the MAP sensor 3P (Black) connector.
Connect the MAP sensor 3P (Black) connector
terminals at the wire side with a jumper wire.
Con nection: Light green/yellow - Green/red
Turn the "ECM" selector switch ON .
Check the MAP sensor wi th the HDS.
Is abou t 0 V indica ted?
YES - Faulty MAP sensor
NO - GO TO STEP 3.
3. MAP Sensor Input Voltage Inspection
Turn the "ECM" selector switch OFF.
Remove the jumper wire.
Turn the "ECM" selector SWitch ON.
Measure the voltage at the wire side.
Connection : Redlyellow (+) - Green/red
H
Is
the voltage within
4. 75 - 5.25
V?
YES - GO TO STEP 4.
NO
Open circuit in Red/yellow wire
• Open circuit in Green/red wife
FUEL SYSTEM (PGM.FI)
3P(BLACK)CONNECTOR
(Wire side/female terminals)
GfR
3P (BLACK) CONNECTOR
(Wire sidelfemale terminals)
LgfY
"'~
GfR
L
e
JUMPER WIRE
RIY
5-17