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Home >> Eagle >> 1993 >> Talon ES, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 1.8L >> DRIVEABILITY Tests >> Test Dr-4A - Testing Intake Air Temperature Sensor (Code 13)
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Test Dr-4A - Testing Intake Air Temperature Sensor (Code 13)

NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION  . For appropriate wiring diagram, see WIRING DIAGRAMS  at end of article.
  1. Using DRB-II, erase faults. Start engine, and let it idle for more than one minute. Read faults. If DRB-II displays Code 13 again, go tostep 3). If Code 13 is not displayed again, go to next step.
  2. Read intake air temperature sensor value. While monitoring DRB-II display, wiggle air temperature sensor wiring harness. If air temperature sensor value changes, repair wiring harness causing air temperature sensor value to change. Perform TEST VER-2. If air temperature sensor value does not change, perform TEST DR-14A.
  3. Read intake air temperature sensor value. If intake air temperature sensor value is within 50°F of ambient temperature, replace Electronic Control Unit (ECU). Perform TEST VER-2.
  4. If air temperature sensor value is 363°F (184°C), repair Dark Green/Orange wire for a short to ground between intake air temperature sensor and ECU 24-pin connector terminal No. 8. Perform TEST VER-2.
  5. If intake air temperature sensor value is -74°F (-23°C), go to next step. If intake air temperature sensor value is neither 363°F (184°C) nor -74°F (-23°C), replace airflow sensor. Perform TEST VER-2.
  6. Disconnect airflow sensor. Using voltmeter, measure voltage between airflow sensor connector terminal No. 6 (Dark Green/Orange wire) and ground. If voltage is more than 4 volts, go to step 9). If voltage is less than 4 volts, turn ignition switch to OFF position.
  7. Disconnect ECU 24-pin connector. Ensure ignition switch is in OFF position. Measure resistance of Dark Green/Orange wire between ECU connector terminal No. 8 and airflow sensor terminal No. 6.
  8. If resistance is more than 10 ohms, repair open Dark Green/Orange wire between ECU and airflow sensor. Perform TEST VER-2. If resistance is less than 10 ohms, replace ECU. Perform TEST VER-2.
  9. Connect jumper wire between airflow sensor connector terminal No. 6 (Dark Green/Orange wire) and ground. Read intake air temperature sensor value. If intake air temperature sensor value is not 363°F (184°C), replace ECU. Perform TEST VER-2.
  10. If intake air temperature sensor value is 363°F (184°C), turn ignition switch to OFF position. Measure resistance between airflow sensor connector terminal No. 4 (Dark Green/Black wire) and ground.
  11. If resistance is more than 10 ohms, repair Dark Green/Black wire for an open circuit to ECU 24-pin connector terminal
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