Dtc 29-1 (Iacv) - Honda MUV700 big red Service Manual

FUEL SYSTEM (PGM-FI)
6-26
4. Fuel Injector Signal Line Open Cin:uit Inspection
Turn the ignition switch to OFF (0).
Disconnect the peM 33P gray connector.
Check the Green/brown wire for continuity
between the wire harness side injector 2P gray
connector and PCM 33P gray connector termi-
nals.
TOOL:
Test probe, 2 pack 07ZAJ-RDJA 110
Connection: Green/ brown (B33) - Green/ brown
Is there continuity'?
YES - GO TO STEP 5.
NO - Open circuit in the Green/brown wire.
5. Fuel Injector Signal line Short Circuit Inspection
PCM 33P GRAY CONNECTOR
INJECTOR
2P GRAY
CONNECTOR
-=-
I
N
" tn"
/
"
Greenl~wn
(B33)
Green~rown
(Terminal side of the wire harness)
Check for continuity between the wire harness , - - - - - - - - - - - - - - - - - ,
side 2P gray connector terminal and ground. INJECTOA 2P GRAY CONNECTOR
(Terminal side of the w ire harness)
Connection: Green / brown - Ground
Is there continuity?
YES - Short circuit in the Green/brown wire.
NO - Replace the
peM
with a known good
one and re check.
DTC 29-' (lACV)
• Before starting the troubleshooting. check the
IACV 4P black connector for loose or poor con-
tacts, and recheck the OTC.
, . Recheck DTC
Erase the OTC (page 6-13).
Start the engine and check the OTC with the HOS
pocket tester.
Is
Dre
29-1
indicated?
NO _.
Interm ittent failure.
• loose or poor contact on the IACV 4P
black connector.
YES - GO TO STEP 2.
2. IACV Short Circuit Inspection
Turn the ignition switch to OFF (0 ).
Disconnect the IACV 4P black connector.
Check for continuity between the wire harness
side 4P connector terminals and ground.
Connection: Black/gray - Ground
Brown/orange - Ground
Brown/ blue - Ground
Brown/ yellow - Ground
Is there continuity?
YES - . Short circuit in the Black/gray or
Brown/orange wire .
• Short ci rcuit in the Brownlblue or
Brown/yellow wire.
NO - GO TO STEP 3.
Q
Green/brown
IACV 4P BLACK CONNECTOR
(Terminal side of the wi re harness)
Brown/blue Brownlyellow
L-"-Brownl
orange