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Home >> Toyota >> 1984 >> 4Runner Base >> Repair and Diagnosis >> Engine Performance >> System >> ECS Engine Control System >> Diagnosis & Testing >> System Testing >> ECS Resistance Tests

ECS Resistance Tests

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The ECS can be checked using an volt/ohmmeter. Before making resistance tests, turn ignition off and disconnect wiring connectors at ECU. Insert volt/ohmmeter probes into wiring connectors from wire side. Measure resistance at connector terminals, NOT ECU terminals.

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