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4JA1-TC/4JH1-TC ENGINE DRIVEABILITY AND EMISSIONS 6E–111 6 Using the DVM and check the MAF sensor signal 1. Ignition “Off”, engine “Off”. 2. Install the breaker box as type A. (ECM disconnected) Ref. Page 6E-81 3. Disconnect the MAF & IAT sensor connector. 4. Check the circuit for open, short to sensor ground or short to ground circuit. Was the problem found? Breaker box is not available: 1. Ignition “Off”, engine “Off”. 2. Disconnect the MAF & IAT sensor connector and ECM connector. 3. Check the circuit for open, short to sensor ground or short to ground circuit. Was the problem found? — Repair faulty verify repair Go to Step 7 7 Using the DVM and check the MAF sensor power 1. Ignition “On”, engine “Off”. 2. Disconnect the MAF & IAT sensor connector. 3. Check the circuit for open circuit. Was the DVM indicated specified value? Approximately 5.0V Go to Step 9 Go to Step 8 Step Action Value(s) Yes No 88 5 C-51 5 88 C-51 C-57(B) V 4 C-51 |