Honda NC700 2012, Service Manual

Page: 189 / 773

4-28
dummyhead dummyhead
PGM-FI SYSTEM
3. TP Sensor Resistance Inspection
Turn the ignition switch OFF.
Disconnect the following:
– ECM 33P (Black) connector (NC700X/XA/S/SA)
[1]
– PCM 33P (Gray) connector (NC700XD/SD) [1]
Measure the resistance at the ECM/PCM 33P
connector of the wire harness side.
Is the resistance within 0.29 – 0.71
Ω
(20°C/
68°F)?
YES – GO TO STEP 4.
NO – Faulty sensor unit (TP sensor)
4. TP Sensor Power Input Voltage Inspection
Connect the following:
– ECM 33P (Black) connector (NC700X/XA/S/SA)
– PCM 33P (Gray) connector (NC700XD/SD)
Disconnect the sensor unit 5P (Black) connector [1].
Turn the ignition switch ON.
Measure the voltage at the sensor unit 5P (Black)
connector of the wire harness side.
Is the voltage within 4.75 – 5.25 V?
YES – Replace the ECM/PCM with a known good
one, and recheck.
NO – • Open circuit in the Green/yellow wire
• Open circuit in the Yellow/red wire
DTC 9-1 (IAT SENSOR LOW VOLTAGE)
• 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 0 V indicated?
YES – GO TO STEP 2.
NO – Intermittent failure
2. IAT Sensor Inspection
Turn the ignition switch OFF.
Disconnect the IAT sensor 2P (Black) connector.
Turn the ignition switch ON.
Check the IAT sensor with the HDS pocket tester.
Is about 0 V indicated?
YES – GO TO STEP 3.
NO – Faulty IAT sensor
Connection: Red/yellow – Green/yellow
Standard:
0.29 – 0.71
Ω
(20°C/68°F)
[1]
G/Y
R/Y
Connection: Yellow/red (+) – Green/yellow (–)
Standard:
4.75 – 5.25 V
Y/R G/Y
[1]