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4JA1-TC/4JH1-TC ENGINE DRIVEABILITY AND EMISSIONS 6E–115 8 Using the DVM and check the MAF sensor signal 1. Ignition “On”, engine “Off”. 2. Disconnect the MAF sensor connector. 3. Check the circuit for short to power supply circuit. Was the DVM indicated specified value? Less than 1V Go to Step 9 Repair faulty verify repair 9 Substitute a known good MAF & IAT sensor assembly — Go to Step 10 Go to Step 11 10 Replace the MAF & IAT sensor assembly. — Verify repair — 11 Is the ECM programmed with the latest software — Verify repair Go to Step 12 12 Replace the ECM. — Verify repair — Step Action Value(s) Yes No 5 V C-51 |