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Service Engine - 30
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.
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.
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.