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P0406-EGR POSITION SENSOR CIRCUIT HIGH (CONTINUED) 3. (K34) EGR POSITION SENSOR SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE Ignition on, engine not running. Measure the voltage on the (K34) EGR Sensor Signal circuit in the Is the voltage above 0 volts? Yes >> Repair the short to battery voltage in the (K34) EGR Posi- tion Sensor Signal circuit. Perform the POWERTRAIN VERIFICATION TEST. (Refer No >> Go To 4 4. EGR SOLENOID ASSEMBLY Turn the ignition off. Connect the PCM harness connectors. Connect a jumper wire between the (K34) EGR Position Sensor Signal With the scan tool, monitor the EGR Position Sensor voltage. Ignition on, engine not running. Is the voltage below 0.5 of a volt? Yes >> Replace the EGR Solenoid Assembly. Perform the POWERTRAIN VERIFICATION TEST. (Refer No >> Go To 5 NOTE: Remove the jumper wire before continuing. 9 - 468 ENGINE ELECTRICAL DIAGNOSTICS WK |