![]() To verify that a trouble area has been successfully repaired, you will need to clear the codes (see above) and run the engine (and possibly road test the van, depending on the exact malfunction) before checking for codes again.Lower temperatures require longer disconnect times. Toyota states “30 seconds or longer depending on the ambient temperature,” for the 3Y vans, but only “10 seconds or longer depending on the ambient temperature” for the 4Y vans. To clear codes from the ECU’s memory after a repair, remove the EFI fuse ( click here to locate) with the ignition switch off OR disconnect the battery.For an example of how the "check engine" light behaves when a van is throwing two codes, click here.For all vans, a steady blinking light (single blink) is your verification that the diagnostic system is functioning and has no stored codes.To learn how to check your van for stored trouble codes, click here. ![]()
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