Honda Transalp XL700V Manual page 182

MIL 23 BLINKS (O SENSOR HEATER)
2
• Before starting the inspection, check for loose or
poor contact on the O sensor 4P (Black) connec-
2
tor and ECM 33P connectors, then recheck the
MIL blinking.
1. O Sensor Heater Resistance Inspection
2
Disconnect the O sensor 4P (Black) connector.
2
Measure the resistance at the O
tor.
Connection: White – White
Is the resistance within 10 – 16 Ω (20 ° C/68 ° F)?
NO – Faulty O sensor.
2
YES – GO TO STEP 2.
2. O Sensor Heater Open Circuit Inspection 1
2
Turn the ignition switch ON.
Measure the voltage at the O
connector.
Connection: Black/white (+) – Ground (–)
Is there battery voltage?
NO – Open circuit in Black/white wire
YES – GO TO STEP 3.
3. O Sensor Heater Open circuit Inspection 2
2
Connect the ECM test harness to the ECM con-
nectors (page 5-16).
Check for continuity between the test harness
terminal and O sensor 4P (Black) connector.
2
Connection: B2 – Black/green
Is there continuity?
NO – Open circuit in Black/green wire
YES – GO TO STEP 4.
O SENSOR 4P (BLACK) CONNECTOR
2
sensor connec-
(Sensor side/female terminal)
2
sensor 4P (Black)
2
O SENSOR 4P (BLACK) CONNECTOR
2
(Wire side/male terminal)
O SENSOR 4P (BLACK) CONNECTOR
2
(Wire side/male terminal)
Bl/G
FUEL SYSTEM (PGM-FI)
W W
Bl/W
B2
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