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Home >> Toyota >> 2002 >> ECHO 2D Sedan, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self-Diagnostics >> Diagnostic Tests >> DTC P1656: Oil Control Valve Malfunction >> Notes

DTC P1656: Oil Control Valve Malfunction: Notes

CAUTION: If ECM replacement is instructed in following tests, always ensure ECM connectors and ground circuits are okay. If either are defective, repair and repeat testing to confirm ECM malfunction.