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P0038-O2 SENSOR 1/2 HEATER CIRCUIT HIGH (CONTINUED) 5. (K299) O2 1/2 HEATER CONTROL CIRCUIT SHORTED TO BATTERY VOLTAGE Turn the ignition off. Disconnect the C3 PCM harness connector. Ignition on, engine not running. Using a 12-volt test light connect to ground, probe the (K299) O2 1/2 Does the test light illuminate brightly? Yes >> Repair the short to battery voltage in the (K299) O2 1/2 Heater Control circuit. Perform the POWERTRAIN VERIFICATION TEST. (Refer No >> Go To 6 6. (K299) O2 1/2 HEATER CONTROL CIRCUIT OPEN Turn the ignition off. CAUTION: Do not probe the PCM harness connectors. Probing Is the resistance below 5.0 ohms? Yes >> Go To 7 No >> Repair the open in the (K299) O2 1/2 Heater Control cir- cuit. Perform the POWERTRAIN VERIFICATION TEST. (Refer 9 - 30 ENGINE - ELECTRICAL DIAGNOSTICS - 3.7L/4.7L/5.7L DR/DH |