Honda Transalp XL700V Manual page 157

FUEL SYSTEM (PGM-FI)
4. TP Sensor Input Voltage Inspection
Turn the ignition switch ON and engine stop
switch " ".
Measure the voltage at the wire harness side.
Connection: Yellow/red (+) – Green/orange (–)
Is the voltage within 4.75 – 5.25 V?
YES
NO
DTC 9-1 (IAT SENSOR LOW VOLTAGE)
• Before starting the inspection, check for loose or
poor contact on the IAT sensor 2P (Gray) connec-
tor and ECM 33P connectors, then recheck the
DTC.
1. IAT Sensor System Inspection
Turn the ignition switch ON and engine stop
switch " ".
Check the IAT sensor with the HDS.
Is about 0 V indicated?
YES
NO
2. IAT Sensor Inspection
Turn the ignition switch OFF.
Disconnect the IAT sensor 2P (Gray) connector.
Turn the ignition switch ON and engine stop
switch " ".
Check the IAT sensor with the HDS.
Is about 0 V indicated?
YES
NO
3. IAT Sensor Output Line Short Circuit Inspection
Turn the ignition switch OFF.
Check for continuity between the IAT sensor 2P
(Gray) connector of the wire harness side and
ground.
Connection: Gray/blue – ground
Is there continuity?
YES
NO
5-26
– Replace the ECM with a new one, and
recheck; for Key Registration Proce-
dures (page 21-4).
– • Open circuit in Green/orange wire
• Open circuit in Yellow/red wire
– GO TO STEP 2.
– Intermittent failure
– GO TO STEP 3.
– Faulty IAT sensor
– Short circuit in Gray/blue wire
– Replace the ECM with a new one, and
recheck; for Key Registration Proce-
dures (page 21-4).
TP SENSOR 3P (BLUE) CONNECTOR
(Wire side/female terminal)
Y/R
Gr/Bu
IAT SENSOR 2P (GRAY) CONNECTOR
(Wire side/female terminal)
G/O