Correct Numbers from wiring harnesses to the intake & exhaust valves

Hi! this is Bo with Car Genius at RepairPal! It seems like you’re dealing with a complex issue! Unfortunately, I couldn’t find specific readings for the wiring harnesses that connect to the exhaust and intake valves for the Sienna. However, it’s important to ensure that the connectors are fully seated and check for loose, corroded, or broken wires. You could try an ECM/ECU Check. To check the ECM (Engine Control Module) or ECU (Engine Control Unit), you can follow these steps: -Measure the resistance between the ECU ground terminal and body ground. The standard resistance should be below 1 Ω. -Disconnect the ECU connector. Check the ground terminal on the ECU side and wire harness side for bending, corrosion, or foreign matter. -If the ECU ground circuit is faulty, repair it. If it is normal, the ECU could be faulty. Temporarily replace the ECU with a normally functioning one and check if the symptoms occur. If the trouble symptoms disappear, replace the original ECU. Don't forget to take it to the dealer and have them reprogram your VIN into the NEW ECU. Without doing this your ECU won’t set off the right information. If you have any other questions feel free to give us a call at 877-913-1554! We'll be happy to help or find you a certified shop in your area!