Diagnostic Circuit Check
- Turn ignition switch to "OFF" position. Remove harness connectors "A" and "B" from Carburetor Control Unit (CCU). See Fig 1 .
- Set check switch of Feedback Carburetor Checker (09341-21000) to "OFF" position.See Fig 2 .
- Set select switch of checker to "A" position. See Fig 3 . Connect FBC wiring harness connector to connectors of FBC checker.
- Connect FBC connector to CCU connectors. Perform checks according to FBC Systems Check Chart.
- If checker shows variation from specifications, check defective sensor and electrical wiring. Repair or replace defective components.
- After repair or replacement of defective components, recheck system with checker. Set check switch of checker to "OFF" position.
- Disconnect all harness connectors and reinstall in proper harness connectors.