Honda CBF600SA Service Manual page 156

Manuals by Motomatrix / www.motomatrix.co.uk / The Solution For Lost Motorcycle Coded Keys.
FUEL SYSTEM (PGM-FI)
MIL 9 BLINKS (IAT SENSOR)
• Before starting the inspection, check for loose or
poor contact on the IAT sensor 2P (Gray) connec-
tor and ECM 33P connectors, then recheck the
MIL blinking.
1. IAT Sensor Output Voltage Inspection
Turn the ignition switch OFF.
Connect the ECM test harness to ECM connec-
tors (page 5-14).
Turn the ignition switch ON and engine stop
switch "
Measure the voltage at the test harness termi-
nals.
CONNECTION: B29 (+) – A18 (–)
STANDARD:
Is the voltage within 2.7 – 3.1 V?
YES
NO
2. IAT Sensor Input Voltage Inspection
Turn the ignition switch OFF.
Disconnect the IAT sensor 2P (Gray) connector.
Turn the ignition switch ON and engine stop
switch "
Measure the voltage at the wire harness side of
IAT sensor connector.
CONNECTION: Gray/blue (+) – Green/orange (–)
Is the voltage within 4.75 – 5.25 V?
YES
NO
3. IAT Sensor Resistance Inspection
Turn the ignition switch OFF.
Measure the resistance at the IAT sensor termi-
nals (at 20 – 30°C/68 – 86°F).
STANDARD: 1 – 4 kΩ (20 – 30°C/68 – 86°F)
Is the resistance within 1 – 4 k Ω ?
YES
NO
5-42
email: info@motomatrix.co.uk
".
2.7 – 3.1 V (20°C/68°F)
– Intermittent failure
– GO TO STEP 2.
".
– GO TO STEP 3.
– GO TO STEP 4.
– GO TO STEP 4.
– Faulty IAT sensor.
TEST HARNESS PIN BOX
(B TERMINALS)
(A18)
TEST HARNESS PIN BOX
(A TERMINALS)
2P (Gray) CONNECTOR
(Wire side/female terminals)
Gray/blue
Green/orange
2P CONNECTOR
(Sensor side/male terminals)
(B29)