What is your question?
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What is your question?
I need to know what the numbers readings are supposed to be for the wiring harnesses that connect to the exhaust & intake valves. I’ve done testing on both solenoids and they’re both working. But I’m getting two different numbers, experiencing some issues with the wiring harnesses connecting to the exhaust and intake valves. I have these warning lights related to this issue, Vac & engine lights are on. I’m also thinking the ECM or ECU could be bad how do I check that?
What makes this problem better or worse?
What is the number reading supposed to be for the wiring harnesses that connect to solenoids I’m getting 2 different numbers
How long has your 2009 Toyota Sienna had this problem?
3 months
1 Reply
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!