FUEL SYSTEM (PGM-FI)
5-32
3. O2 Sensor Short Circuit Inspection
Connect the O
2 sensor 4P (Black) connector.
Check for continuity between the ECM 33P (Light
gray) connector of the wire harness side and
ground.
Is there continuity?
YES – Short circuit in the Orange/white wire
NO – GO TO STEP 4.
4. O
2 Sensor Inspection
Connect the ECM 33P connectors.
Replace the O
2 sensor with a known good one
(page 5-101).
Clear the ECM self-diagnosis memory data (page
5-14).
Start the engine and warm the engine up to cool-
ant temperature is 80 °C (176 °F).
Test-ride the motorcycle and check the O
2 sensor
with the HDS pocket tester.
Is the DTC 21-1 indicated?
YES – Replace the ECM with a known good
one, and recheck; refer to Key Registra-
tion Procedures (page 21-6)
NO – Faulty original O
2 sensor
DTC 23-1 (O2 SENSOR HEATER)
• Before starting the inspection, check for loose or
poor contact on the O2 sensor 4P (Black) connec-
tor and ECM 33P connectors, then recheck the
DTC.
1. O
2 Sensor Heater System Inspection
Clear the ECM self-diagnosis memory data (page
5-14).
Start the engine and check the O
2 sensor heater
with the HDS pocket tester.
Is the DTC 23-1 indicated?
YES – GO TO STEP 2.
NO – Intermittent failure
CONNECTION: B20 – Ground
TOOL:
Test probe 07ZAJ-RDJA110
33P (Light gray) CONNECTOR
(Wire side/female terminal)
B20 TERMINAL
Manuals by Motomatrix / www.motomatrix.co.uk / The Solution For Lost Motorcycle Coded Keys.
email: info@motomatrix.co.uk
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