Honda NC700XA Service Manual page 190

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3. IAT Sensor Voltage Output Line Short Circuit
Inspection
Turn the ignition switch OFF.
Check for continuity between the IAT sensor 2P
(Black) connector [1] of the wire harness side and
ground.
Connection: Gray/blue – Ground
Is there continuity?
YES
NO
DTC 9-2 (IAT SENSOR HIGH
VOLTAGE)
• NC700X/XA/S/SA:
Before starting the inspection, check for loose or
poor contact on the IAT sensor 2P (Black) connector
and ECM 33P (Black) connector, then recheck the
DTC.
• NC700XD/SD:
Before starting the inspection, check for loose or
poor contact on the IAT sensor 2P (Black) connector
and PCM 33P (Gray) connector, 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. IAT Sensor System Inspection
Turn the ignition switch ON and engine stop switch
" ".
Check the IAT sensor with the HDS pocket tester.
Is about 5 V indicated?
YES
NO
2. IAT Sensor Inspection
Turn the ignition switch OFF.
Disconnect the IAT sensor 2P (Black) connector [1].
Connect the IAT sensor 2P (Black) connector
terminals at the wire harness side with a jumper wire
[2].
Connection: Gray/blue – Green/yellow
Turn the ignition switch ON.
Check the IAT sensor with the HDS pocket tester.
Is about 0 V indicated?
YES
NO
– Short circuit in the Gray/blue wire
– Replace the ECM/PCM with a known good
one, and recheck.
– GO TO STEP 2.
– Intermittent failure
– Faulty IAT sensor
– GO TO STEP 3.
PGM-FI SYSTEM
[1]
Gr/Bu
[1]
Gr/Bu G/Y
[2]
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