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P2098-DOWNSTREAM FUEL TRIM SYSTEM 2 LEAN (CONTINUED) 5. (K243) O2 SENSOR 2/2 SIGNAL CIRCUIT Remove the jump wire. Ignition on, engine not running. With the scan tool, monitor the O2 Sensor voltage. Is the voltage above 4.8 volts? Yes >> Go To 6 No >> Check the (K243) O2 Sensor 2/2 Signal circuit for a open or short to voltage. Inspect the O2 Sensor connector and Perform POWERTRAIN VERIFICATION TEST. (Refer to 9 9 - 654 ENGINE ELECTRICAL DIAGNOSTICS ND |