Honda TRX680FA Service Manual page 146

FUEL SYSTEM (PGM-FI)
2. lACV Short Circuit Inspection
Remove the seat (page 3-4).
Remove the trim clip and throttle body cover
(page 6-43).
Turn the ignition switch OFF.
Disconnect the lACV 4P (Black) connector.
Check for continuity between the lACV 4P (Black)
connector and ground on all wires.
Connection: Black - Ground
Brown/blue - Ground
Brown/yellow - Ground
Brown/red - Ground
Is these continuity on all wires?
YES - • Short circuit in Black or Brown/red
wire.
• Short circuit in Brown/blue or Brown/
yellow wire.
NO - GO TO STEP 3.
3. lACV Circuit Continuity Inspection
Disconnect the PCM 33P (Gray) connector.
Check for continuity between the PCM 33P
(Gray) connector and the lACV 4P (Black) con-
nector.
TOOL:
Test probe 07ZAJ-RDJA110
Connection: B20 - Black
B30 - Brown/blue
B31 - Brown/yellow
B32 - Brown/red
Are there continuities?
YES - GO TO STEP 4.
NO - • Open or loose contact in Black or
Brown/red wire.
• Open or loose contact in Brown/blue
or Brown/yellow wire.
4. lACV Resistance Inspection
Measure the resistance at the terminals of the
lACV 4P (Black) connector on the valve side
Connection: Black - Brown/red
Brown/blue - Brown/yellow
Standard: 120-140 Q (20°C/68°F)
te the resistance within 120 - 140 Q {20°C/68°F)7
YES - Replace the PCM with a new one, and
recheck.
NO - Faulty lACV.
lACV 4P (BLACK) CONNECTOR
(Wire side of female terminal)
Bl Br/Bu Br/Y Br/R
lACV 4P (WHITE) CONNECTOR
(Wire side of female terminal)
• { § ) Br/R
•
Br/Y
J
PCM 33P (GRAY) CONNECTOR
(Wire side of female terminal)
lACV 4P (BLACK) CONNECTOR
(Valve side of male terminal)
Br/Bu ^ - ^ Br/Y
6-30