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5. (K243) O2 2/2 SIGNAL CIRCUIT OPEN Turn the ignition off. CAUTION: Do not probe the PCM harness connectors. Probing the Is the resistance below 5.0 ohms? Yes >> Go To 6 No >> Repair the open in the (K243) O2 2/2 Signal circuit. Perform the POWERTRAIN VERIFICATION TEST. (Refer 6. (K904) O2 DOWNSTREAM RETURN CIRCUIT OPEN Measure the resistance of the (K904) O2 Downstream Return circuit Is the resistance below 5.0 ohms? Yes >> Go To 7 No >> Repair the open in the (K904) O2 Downstream Return cir- cuit. Perform the POWERTRAIN VERIFICATION TEST. (Refer 9 - 176 ENGINE ELECTRICAL DIAGNOSTICS LX |