Honda CRF450R 2009 Service Manual page 166

FUEL SYSTEM (PGM-FI)
6-34
3. IAT Sensor Line Inspection
Turn the "ECM" selector switch OFF.
Disconnect the ECM 33P (Black) connector.
Check for continuity at the Graylblue and Graylblack
wire between the IAT sensor 2P ('09 • '12: Gray/
After ',2: Black) connector and ECM 33P (Black)
connector.
Connection: 9 - Gray/blue
22 - Green/red
TOOL:
Test probe, 2 pack
Is
there continuity?
07ZAJ·RDJA 110
YES - Replace the ECM with a known good one,
and recheck.
NO
Open circuil in Gray/blue wire
• Open circui t in Green/red wire
DTC 12-1 (FUEL INJECTOR)
Before starting the inspection, check for loose or poor
contact on the fuel injector 2P (Gray) connector and
ECM 33P (Black) connector, then recheck the OTG.
1. Fuel Injector System Inspection
Erase the OTC's (page 6·23).
Connect the 12 V battery ("ECM" selector switch is
ON).
- '09:
page
6-19
- After '09:
page
6-19
Check the fuel injector with the MCS.
Is DTC 12-1 Indicated?
YES - GO TO
STEP 2.
NO - Intermittent failure
'09- '12:
33P (BLACK) CONNECTOR
(Wire side/female terminals)
22 .
9
ifQ
Gr/Bu
Q
G/R
After ' 12:
22 •.
1m
9
Q
Gr/Bu
33P (BLACK) CONNECTOR
(Wire sjde/female terminals)
Q
G/R