![]() ![]() The fuel-pump driver module controls the high-pressure fuel pumps of modern, computer-controlled, fuel-injected engines, including diesels. A third type of driver circuit was used by Toyota on overseas models using the 4A-GE engine with D type EFI. Without this control of the current flow through the injector, the solenoid coil would overheat, causing injector failure. ![]() These can go bad or get damaged from water and will cause a no start or rough running and cut outs in revving/rpm.
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December 2022
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