Honda 2004 Odyssey Service Manual page 412

DTC P0112 '01 Model:
Low Voltage
1. Turn the ignition switch ON (II).
2. Check the IAT with the scan tool or the HDS.
Is 302°F ( 150°C) or higher ( or H-Limit in the HDS),
or 0 V indicated?
YES Go to step 3.
NO Go to step 8.
3. Disconnect the IAT sensor 2P connector.
4. Check the IAT with the scan tool or the HDS.
Is 302°F ( 150°C) or higher ( or H-Limit in the HDS),
or 0 V indicated?
YES Go to step 5.
NO Replace the IAT sensor.
5. Turn the ignition switch OFF.
6. Disconnect PCM connector A (31P).
7. Check for continuity between IAT sensor 2P
connector terminal No. 2 and body ground.
IAT SENSOR 2P CONNECTOR
IAT
(RED/YEL)
Wire side of female terminals
Is there continuity?
YES Repair short in the wire between the PCM
(A14) and the IAT sensor.
NO Substitute a known-good PCM and recheck
(see page 11-5). If normal IAT readings are
indicated, replace the original PCM.
IAT Sensor Circuit
8. Check the temperature reading on the scan tool.
If the engine is warm, the reading will be higher
than ambient temperature. If the engine is cold, the
IAT and ECT will have the same value.
Is the correct ambient temperature indicated?
YES Intermittent failure, system is OK at this time.
Check for poor connections or loose terminals at
the IAT sensor and the PCM.
NO Replace the IAT sensor.
11-103