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4. (K34) EGR SENSOR SIGNAL CIRCUIT SHORTED TO GROUND Measure the resistance between ground and the (K34) EGR Sensor Is the resistance below 5.0 ohms? Yes >> Repair the short to ground in the (K34) EGR Sensor Signal circuit. Perform the POWERTRAIN VERIFICATION TEST. (Refer No >> Go To 5 5. EGR SOLENOID ASSEMBLY Reconnect the PCM harness connector. Ignition on, engine not running. Using a 12-volt test light, jumper cross the (K35) EGR Solenoid Control With the scan tool, actuate the EGR Solenoid. Allowing it to actuate for Does the test light illuminate brightly and flash on and off? Yes >> Replace the EGR Solenoid Assembly per Service Informa- tion. Perform the POWERTRAIN VERIFICATION TEST. (Refer No >> Go To 6 6. PCM NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal Were there any problems found? Yes >> Repair as necessary. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) No >> Replace and program the Powertrain Control Module per Service Information. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) 9 - 640 ENGINE ELECTRICAL DIAGNOSTICS LX |