Honda NSS250S Manual page 201

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DTC 29-1 (IACV)
• Before starting the inspection, check for loose or
poor contact on the IACV 4P (Black) connector
and recheck the DTC.
1. Recheck DTC
Erase the DTC's (page 6-16).
Turn the ignition switch ON and engine stop
switch " ", then start the engine and check the
injector with the HDS pocket tester.
Is the DTC 29-1 indicated?
YES – GO TO STEP 2.
NO – • Intermittent failure
• Loose or poor contact on the IACV 4P
(Black) connector
2. IACV Short Circuit Inspection
Turn the ignition switch OFF.
Disconnect the IACV 4P (Black) connector.
Check the continuity between the IACV 4P con-
nector of the wire side and ground.
CONNECTION: Light green/red – Ground
Brown/red – Ground
Black/red – Ground
Gray/red – Ground
Is there continuity?
YES – Short circuit in Light green/red, Brown/
red, Black/red, or Gray/red wire
NO – GO TO STEP 3.
3. IACV Open Circuit Inspection
Disconnect the PCM 33P (Black) connector.
Check the continuity between the PCM 33P and
IACV 4P connectors of the wire side.
TOOL:
Test probe
CONNECTION: Light green/red – Light green/red
Brown/red – Brown/red
Black/red – Black/red
Gray/red – Gray/red
Is there continuity?
YES – GO TO STEP 4.
NO – Open circuit in Light green/red, Brown/
red, Black/red, or Gray/red wire
IACV 4P CONNECTOR
(Wire side/female terminals)
Light
green/red
PCM 33P CONNECTOR
(Wire side/female terminals)
07ZAJ-RDJA110
Light green/red
FUEL SYSTEM (PGM-FI)
Gray/red
Brown Black
/red /red
Brown/red
Gray/red
Black
/red
Brown
/red
Light green/red
Black/red
Gray/red
IACV 4P CONNECTOR
(Wire side/female terminals)
6-47