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ENGINE DRIVEABILITY AND EMISSIONS 6E–121 6 Using the DVM and check the IAT sensor. 1. Ignition “Off”, engine “Off”. 2. Disconnect IAT sensor connector. 3. Measure the resistance of IAT sensor. Does the tester indicate standard resistance as shown Standard resistance Go to Step 7 Go to Step 8 7 Using the DVM and check the IAT sensor signal 1. Ignition “Off”, engine “Off”. 2. Install the breaker box as type A. (ECM disconnected) Ref. 6E-80. 3. Disconnect the IAT sensor connector. 4. Check the circuit for short to sensor ground or ground circuit. Was the problem found? Breaker box is not available: 1. Ignition “Off”, engine “Off”. 2. Disconnect the IAT sensor connector. 3. Check the circuit for short to sensor ground or ground circuit. Was the problem found? — Repair faulty harness and verify repair Go to Step 10 Step Action Value(s) Yes No Temperature (°C) Resistance ( Ω) (Approximately) -20 32040 0 9788 20 3516 40 1439 60 656 80 327 100 175 IAT Sensor 1 1 2 2 33 54 C56(J2) 1 22 |