Dtc 9-2 (Iat Sensor High Voltage) - Honda MUV700 big red Service Manual

DTC 9-2 (lAT SENSOR HIGH VOLTAGE)
• Before starting the troubleshooting, check the
IAT sensor 2P black connector for loose or poor
contacts, and recheck the DTe.
1. IAT Sensor System Inspection
Turn the ignition switch to ON
(I).
Check the IAT sensor with the HDS pocket tester.
Is
/Jb out 5
V indicated?
YES - GO TO STEP 2.
NO _ . Intermittent failure.
• loose or poor contact on the IAT
sensor 2P black connector.
2. IAT Sensor Inspection
Turn the ignition switch to OFF
~O) .
Disconnect the IAT sensor 2P black connect or.
Con nect the wire harness side 2P connector ter-
minals with a jumper wire.
Connection : Gray/ blue - Green / black
Turn the ignition switch to ON
(I),
Check the IAT sensor with the HOS pocket tester.
Is about 0 V indicated?
YES - Faulty IAT sensor
NO - GO TO STEP 3.
3. IAT Sen sor Open Circuit Inspection
Turn the ignition switch to OFF
(0).
Remove the jumper wire.
Disconnect the PCM 33P gray connector.
Check the Gray/blue and Green/black wires for
continuity between the IAT sensor 2P connector
and PCM 33P gray connector terminals.
TOOL:
Test probe, 2 pack 07ZAJ·ROJA110
Connection : Gray/ blue (826) - Gray/ blue
Green/ black (82) - Green/ black
Is there continuity?
YES - Replace the PCM with a known good
FUEL SYSTEM (PGM-FI)
IAT SENSOR 2P CONNECTOR
(Terminal side of t he wire harness)
Gray/blue
\
Green/black
JUMPER W IRE
Green/blade (82)
PCM 33P GRAY
~
CONNECTOR
Gray/blue (826)
Green/
black
IAT SENSOR
2P CONNECTOR
(Terminal side of the wire harness )
one and recheck.
L _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ -'
NO _ . Open circuit in the Gray/blue wire .
• Open circuit in the Green/black wire.
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