Honda Jazz/Fit 2003 · Service Manual

DTC Troubleshooting: P0113 (10-2) (L12A/L13A 5MT without ETCS)

DTC Troubleshooting: P0113 (10-2)

DTC P0113 (10-2):  IAT Sensor Circuit High Voltage


1.Turn the ignition switch ON (II).

2.Check the IAT with the HDS or the scan tool.

Is -20°C (-4°F) or less, or about 5 V indicated?


YES - Go to 3.


NO - Intermitent failure, system is OK at this time. Check for poor connections or loose terminals at the IAT sensor and at the ECM/PCM.n


3.Turn the ignition switch OFF.

4.Disconnect the IAT sensor 2P connector.

5.Connect the IAT sensor 2P connector terminals No. 1 and No. 2 with a jumper wire.

 

SAA2E01K72100081102FAAD01IAT SENSOR 2P CONNECTORIAT
(RED/YEL)
Wire side of female terminalsSG2
(GRN/BLK)
JUMPER WIRE

6.Turn the ignition switch ON (II).

7.Check the IAT with the HDS or the scan tool.

Is -20°C (-4°F) or less, or about 5 V indicated?


YES - Go to 8.


NO - Replace the  IAT sensor.n


8.Turn the ignition switch OFF.

9.Remove the jumper wire.

10.Connect ECM/PCM connector terminals A10 and B17 with a jumper wire.

 

SAA3EDSK72100081102FAAD01ECM/PCM CONNECTORSWire side of female terminalsSG2(GRN/BLK)IAT (RED/YEL)A (31P)B (24P)JUMPER WIRE

11.Turn the ignition switch ON (II).

12.Check the IAT with the HDS or the scan tool.

Is -20°C (-4°F) or less, or about 5 V indicated?


YES - Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM, then recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original  ECM/ PCM.n


NO - Repair open in the wire between the ECM/PCM (A10, B17) and the IAT sensor.n