ECU Reset Procedure 1. Turn key OFF. 2. Install Red wire jumper from Kohler EFI service kit on to service port (connect white wire to black wire in 4 way diagnostic port). 3. Turn key ON, then OFF and count 10 seconds. 4. Turn key ON, then OFF and count to 10 seconds a second time. 5. Remove jumper, ECU is reset. A TPS Learn Procedure must be performed after ECU Reset.