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6E-242 Engine Control System (4HK1) 4 1. Turn OFF the ignition. 2. Disconnect the APP sensor harness 3. Connect a DMM between the 5 volts reference 4. Turn ON the ignition, with the engine OFF. Is the DMM voltage more than the specified value? 4.5 volts Go to Step 5 Go to Step 6 5 1. Turn OFF the ignition. 2. Connect a 3-amp fused jumper wire between 3. Turn ON the ignition, with the engine OFF. 4. Observe the APP Sensor 1 parameter with the Is the APP Sensor 1 parameter more than specified 4.5 volts Go to Step 8 Go to Step 7 6 1. Test the 5 volts reference circuit between the 2. Repair the circuit(s) as necessary. Did you find and correct the condition? — Go to Step 12 Go to Step 9 7 1. Test the signal circuit between the ECM (pin • An open circuit 2. Repair the circuit(s) as necessary. Did you find and correct the condition? — Go to Step 12 Go to Step 9 8 1. Turn OFF the ignition. 2. Inspect for an intermittent and for poor 3. Repair the connection(s) as necessary. Did you find and correct the condition? — Go to Step 12 Go to Step 10 9 1. Turn OFF the ignition. 2. Disconnect the ECM harness connector. 3. Inspect for an intermittent and for poor 4. Repair the connection(s) as necessary. Did you find and correct the condition? — Go to Step 12 Go to Step 11 Step Action Value(s) Yes No |