Honda SH300 2006 Manual page 135

DTC 9-2 (IAT SENSOR HIGH VOLTAGE)
• Before starting the inspection, check for loose or
poor contact on the sensor unit 5P (Black) con-
nector and recheck the DTC.
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 – GO TO STEP 2.
NO – • Intermittent failure
• Loose or poor contact on the sensor
unit connector
2. IAT Sensor Output Voltage Inspection
Turn the ignition switch "OFF".
Disconnect the sensor unit 5P (Black) connector.
Connect the sensor unit terminals with a jumper
wire.
Connection: White/Blue – Green/orange
Turn the ignition switch ON.
Check the IAT sensor with the HDS pocket tester.
Is about 0 V indicated?
YES – Replace the sensor unit with a new one,
and recheck. (Faulty IAT sensor)
NO – GO TO STEP 3.
3. IAT Sensor Output Line Open Circuit Inspection
Turn the ignition switch "OFF".
Disconnect the jumper wire.
Disconnect the ECM 33P connector.
Check for continuity between the sensor unit 5P
(Black) connector of the wire harness side and
ECM 33P connector of the wire harness side.
CONNECTION: White/Blue – No. 14 (White/Blue)
STANDARD: Continuity
TOOL:
Test probe
Is there continuity?
YES – GO TO STEP 4.
NO – Open circuit in the White/Blue wire
W/Bu
07ZAJ-RDJA110
FUEL SYSTEM (PGM-FI)
5P (Black) CONNECTOR
(Wire side of female terminal)
G/O
5P (Black) CONNECTOR
(Wire side of female terminal)
W/Bu
33P CONNECTOR 5P (Black) CONNECTOR
(Wire side of female terminal) (Wire side of female terminals)
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