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• When Monitored: • Set Condition: Possible Causes INTERMITTENT DTC (K70) EVAP PURGE RETURN CIRCUIT OPEN OR HIGH RESISTANCE (K52) EVAP PURGE CONTROL CIRCUIT OPEN OR HIGH RESISTANCE EVAP PURGE SOLENOID POWERTRAIN CONTROL MODULE (PCM) Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE - Diagnostic Test 1. DTC IS ACTIVE Ignition on, engine not running. With the scan tool, Clear DTCs in the Powertrain Control Module (PCM). Start the engine and allow it to reach normal operating temperature. WARNING: When the engine is operating, do not stand in direct line with the fan. Do not put your hands Is the status Active for this DTC? Yes >> Go To 2 No >> Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING) 2. (K70) EVAP PURGE RETURN CIRCUIT OPEN OR HIGH RESISTANCE Turn the ignition off. Disconnect the Evap Purge Solenoid connector. Turn the ignition on. Using a 12 volt test light connected to 12 volts, check the (K70) Evap NOTE: The test light should be illuminated and bright. Compare Is the test light illuminated and bright? Yes >> Go to 3 No >> Repair the (K70) Evap Purge Return circuit for an open cir- cuit or high resistance. Perform the PCM Verification Test Ver. 1 (Refer to 9 - PM ENGINE ELECTRICAL DIAGNOSTICS - GPEC 9 - 383 |