Great Dane GDRZ61-25KHE, GDRZ72-27KHE, GDRZ61-25KAE, GDRZ61-28KHE, GDRZ61-26KHE manual Service Engine

SERVICE ENGINE

Keep in mind that EFI-related problems are more often caused by the wiring harness or connections than by the EFI components. Even small amounts of corrosion or oxidation on the terminals can interfere with the milliampere currents used in system operation. Cleaning the connectors and grounds will solve problems in many cases. In an emergency situation, simply disconnecting and reconnecting the connectors may clean up the contacts enough to restore operation, at least temporarily.

IMPORTANT: Avoid damage! When performing voltage or continuity tests, avoid putting excessive pressure on or against the connector pins. Flat probes are recommended for testing to avoid spreading or bending the terminals.

If the MIL indicates a problem with the EFI system, first disconnect the Electronic Control Unit (ECU) connector and test for continuity between the component connector terminals and the corresponding terminals in the ECU connector using an ohmmeter. Little or no resistance should be measured, indicating that the circuit is good.

If the condition cannot be corrected by checking the electrical system and connections, the EFI system must be serviced by an authorized Kohler EFI servicing dealer.

Service Engine - 30