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P2096-DOWNSTREAM FUEL TRIM SYSTEM 1 LEAN (CONTINUED) 7. (K904) O2 RETURN DOWNSTREAM CIRCUIT Measure the voltage on the (K904) O2 Return Downstream circuit in Is the voltage at 2.5 volts? Yes >> Check the fuel system for contaminants. Perform POWERTRAIN VERIFICATION TEST. (Refer to 9 No >> Check the (K904) O2 Return Downstream circuit for a short to ground, open, or short to voltage. Inspect the O2 Perform POWERTRAIN VERIFICATION TEST. (Refer to 9 9 - 642 ENGINE ELECTRICAL DIAGNOSTICS ND |