Honda NC700 2012 Service Manual page 195

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PGM-FI SYSTEM
DTC 21-1 (O
• NC700X/XA/S/SA:
Before starting the inspection, check for loose or
poor contact on the O
or O
2
then recheck the DTC.
• NC700XD/SD:
Before starting the inspection, check for loose or
poor contact on the O
or O
2
then recheck the DTC.
• If the ECM/PCM is replaced, perform the following:
– Key Registration Procedure (page 23-6)
– Clutch Initialize Learning Procedure (NC700XD/
SD) (page 12-120)
1. O Sensor System Inspection
2
Turn the ignition switch ON and engine stop switch
" ".
Start the engine and warm up the engine up to
coolant temperature is 80°C (176°F).
Test-ride the motorcycle and check the O
with the HDS pocket tester.
Is the DTC 21-1 indicated?
YES
NO
2. O Sensor Short Circuit Inspection
2
Turn the ignition switch OFF.
Disconnect the O
Check for continuity between the O
(Black) connector of the wire harness side and
ground.
Connection: White/green – Ground
Is there continuity?
YES
NO
3. O Sensor Line Open Circuit Inspection 1
2
Disconnect the following:
– ECM 33P (Black) connector (NC700X/XA/S/SA)
[1]
– PCM 33P (Gray) connector (NC700XD/SD) [1]
Check for continuity between the ECM/PCM 33P
connector and O
the wire harness side.
Connection: White/green – White/green
TOOL:
Test probe
Is there continuity?
YES
NO
4-34
SENSOR)
2
sensor 1P (Black) connector
2
sensor cap and ECM 33P (Black) connector,
sensor 1P (Black) connector
2
sensor cap and PCM 33P (Gray) connector,
– GO TO STEP 2.
– Intermittent failure
sensor 1P (Black) connector [1].
2
– Short circuit in the White/green wire
– GO TO STEP 3.
sensor 1P (Black) connector [2] of
2
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– GO TO STEP 4.
– Open circuit in the White/green wire
sensor
2
[1]
sensor 1P
2
[2]
W/G
W/G
W/G
[1]