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NOTE: If the operation sound is not heard, and the circuit is normal, either the stepper motor or the ECM or PCM may Checking the Coil Resistance ZK600385 1 2 3 1 2 3 AA00 1. Remove the EGR valve. 2. Measure the resistance between terminal No. 2 and either Standard value: 20 - 24 Ω [at 20°C (68°F)] 3. If the resistance is not within the standard, replace the EGR 4. Measure the resistance between terminal No. 5 and either Standard value: 20 - 24 Ω [at 20°C (68°F)] 5. If the resistance is not within the standard, replace the EGR Operation Check 1. Remove the EGR valve. ZK600386 1 2 3 AA00 EGR valve 2. Connect special tool MB991658 to the EGR valve. ZK600387 MB991658 Battery AA00 3. Connect the battery positive (+) terminal to terminal No. 2. Connecting battery voltage to the EGR valve for a long time 4. Connect terminals 1 and 3 to the negative (-) terminal of the 5. Connect the battery positive (+) terminal to terminal No. 5. Connecting battery voltage to the EGR valve for a long time 6. Connect terminals 4 and 6 to the negative (-) terminal of the EMISSION CONTROL <MFI> 17c-15 EXHAUST GAS RECIRCULATION (EGR) SYSTEM |