Honda NC700XA Service Manual page 210

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2. IAT Sensor Input Voltage Inspection
Turn the ignition switch OFF.
Disconnect the IAT sensor 2P (Black) connector [1].
Turn the ignition switch ON.
Measure the voltage at the IAT sensor 2P (Black)
connector of the wire harness side.
Connection: Gray/blue (+) – Green/yellow (–)
Standard:
Is the voltage within 4.75 – 5.25 V?
YES
NO
3. IAT Sensor Resistance Inspection
Turn the ignition switch OFF.
Measure the resistance at the IAT sensor terminals.
Standard: 2.2 – 2.7 kΩ (20°C/68°F)
Is the resistance within 2.2 – 2.7 kΩ (20°C/68°F)?
YES
NO
4. IAT Sensor Line Open Circuit Inspection
Turn the ignition switch OFF.
Check for continuity between the IAT sensor 2P
(Black) connector [1] of the wire harness side and
ECM test harness.
Connection:
NC700X/XA/S/SA:
NC700XD/SD:
Is there continuity?
YES
NO
4.75 – 5.25 V
– GO TO STEP 3.
– GO TO STEP 4.
– Replace the ECM/PCM with a known good
one, and recheck.
– Faulty IAT sensor
9 – Gray/blue
22 – Green/yellow
B9 – Gray/blue
B22 – Green/yellow
– GO TO STEP 5.
– • Open circuit in the Gray/blue wire
• Open circuit in the Green/yellow wire
PGM-FI SYSTEM
[1]
Gr/Bu G/Y
[1]
G/Y
Gr/Bu
9 or B9
22 or B22
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