DTC P0113-A: INTAKE AIR TEMPERATURE SENSOR VOLTAGE HIGH Chrysler LHS II

Note. For connector terminal ID, see CONNECTOR IDENTIFICATION . For wiring diagram, see WIRING DIAGRAMS article.

Note. Vehicles equipped with a 3.2L or 3.5L engine are equipped with an Intake Air Temperature/Manifold Absolute Pressure (IAT/MAP) sensor. For this test, IAT/MAP will be identified as IAT sensor.

1. Using scan tool, read Intake Air Temperature (IAT) sensor voltage. If voltage is 4.5 volts or less, go to next step. If voltage is more than 4.5 volts, go to step 5.
2. Observe Intake Air Temperature (IAT) sensor voltage on scan tool. Wiggle wiring harness between IAT sensor and PCM. (Схема №47)and (Схема №48). If voltage changes, repair wiring harness as necessary where wiggling caused problem to appear. Perform «TEST VER-5A: ROAD TEST FOR OBD-II TROUBLE CODES»(ref-576-S36272092702000030800000). If voltage did not change, go to next step.
3. Condition to set trouble code is not present at this time. INTAKE AIR TEMP SENSOR VOLTAGE HIGH DTC sets if IAT sensor circuit voltage on Powertrain Control Module (PCM) connector terminal No. 37 goes more than 4.9 volts. Possible causes are: IAT sensor signal circuit open, IAT sensor internally open, IAT sensor ground circuit open, PCM failure, faulty connections or wiring. Go to next step.
4. Inspect all related wiring and connectors and repair as necessary. Using scan tool, read FREEZE FRAME data. Ensure hex code matches DTC on scan tool. Hex code should be 3A. Use this information for additional diagnostics. If no problems were found with wiring and connectors, see «INACTIVE TROUBLE CODE CONDITION»(ref-576-S27765318282000030800000) under SELF-DIAGNOSTICS. Test is complete. Perform «TEST VER-5A: ROAD TEST FOR OBD-II TROUBLE CODES»(ref-576-S36272092702000030800000). If related wiring and connectors were repaired, perform «TEST VER-5A: ROAD TEST FOR OBD-II TROUBLE CODES»(ref-576-S36272092702000030800000).
5. Disconnect IAT sensor connector. (Схема №47)and (Схема №48). Using a voltmeter, check voltage of IAT sensor signal circuit. See «IAT SENSOR CONNECTOR WIRE IDENTIFICATION»(ref-576-S07371505632000030800000) table. If voltage is 6 volts or less, go to next step. If voltage is more than 6 volts, repair short to voltage on IAT sensor signal circuit. Perform «TEST VER-5A: ROAD TEST FOR OBD-II TROUBLE CODES»(ref-576-S36272092702000030800000).
6. Connect a jumper wire between IAT sensor signal circuit and IAT sensor ground circuit on IAT sensor connector. Using scan tool, read IAT sensor voltage. If voltage is one volt or more, go to next step. If voltage is less than one volt, replace IAT sensor. Perform «TEST VER-5A: ROAD TEST FOR OBD-II TROUBLE CODES»(ref-576-S36272092702000030800000).
7. Move jumper wire from IAT sensor connector ground circuit to an engine ground. Using scan tool, read IAT sensor voltage. If voltage is one volt or more, go to next step. If voltage is less than one volt, repair open IAT sensor ground circuit. Perform «TEST VER-5A: ROAD TEST FOR OBD-II TROUBLE CODES»(ref-576-S36272092702000030800000).
8. Turn ignition off. Disconnect Powertrain Control Module (PCM) connector. Using an ohmmeter, check resistance of IAT sensor signal circuit between IAT sensor connector and PCM connector terminal No. 37. See «IAT SENSOR CONNECTOR WIRE IDENTIFICATION»(ref-576-S07371505632000030800000) table and «PCM CONNECTOR WIRE IDENTIFICATION»(ref-576-S32647443212000030800000) table. If resistance is 5 ohms or more, repair open IAT sensor signal circuit. Perform «TEST VER-5A: ROAD TEST FOR OBD-II TROUBLE CODES»(ref-576-S36272092702000030800000). If resistance is less than 5 ohms, replace PCM. Perform «TEST VER-5A: ROAD TEST FOR OBD-II TROUBLE CODES»(ref-576-S36272092702000030800000).

IAT SENSOR CONNECTOR WIRE IDENTIFICATION

PCM CONNECTOR WIRE IDENTIFICATION