Dtc 9-2 (Iat Sensor High Voltage) - Honda TRX500FM Service Manual

PGM·FI SYSTEM
4·22
DTC 9·2 (IA T SENSOR HIGH
VOLTAGE)
Before starting the inspection. check for loose or
poor contact on the tAT sensor 2P (Black) connector
and PCMJECM 33P connectors, and recheck the
Ole.
1. tAT Sensor System Inspection
Turn the ignition switch ON and engine stop switch
·0·,
Check the tAT sensor with the HOS pocket te ster.
Is about 5 V Indicated?
YES - GO TO STEP 2.
NO Intermittent failure ,
• loose or poor contact of the tAT sensor
2P (Black) connector.
2. tAT Sensor Inspection
Tum the ignition switch OFF .
Disconnect the tAT sensor 2P (Black) connector [1].
Connect the wire harness side tAT sensor 2P
(Black) connector terminals with a jumper wire [2].
Connection: Gray - Green/red
Tum the ignition switch ON and engine SlOP switch
·0 ·,
Check the tAT sensor with the HDS pocket tester.
Is about 0 V Indicated?
YES - Faulty IAT sensor
NO - GO TO STEP 3.
3.
IAT Sensor Open Circuit Inspection
Tum the ignition switch OFF.
Remove the jumper wire.
Disconnect the PCMlECM 33P (Gray) connector
(1J.
Check for continuity between the wire harness side
IAT sensor 2P (Black) connector (2) and PCMfECM
33P (Gray) connector terminals.
Connection :
82 -
Greenlred
826 - Gray
TOOL:
Test probe 07ZAJ·RDJA 110
Is there continuity?
YES - Replace the PCMfECM with a known good
one (page 4·34). and recheck.
NO Open circuit in the Green/red wire.
• Open circuit in the Gray wire.
Gray Greenfred
[11
121
82
826
121
[11
Gray Greenfred