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3. (K15) COIL 4 CONTROL CIRCUIT OPEN OR HIGH RESISTANCE Turn the ignition off. Disconnect the Powertrain Control Module (PCM) connector. Measure the resistance of the (K15) Coil 4 Control circuit between the Is the resistance below 5.0 ohms? Yes >> Go to 4 No >> Repair the (K15) Coil 4 Control circuit for an open circuit or high resistance. Perform the PCM Verification Test Ver. 1 (Refer to 9 - 4. IGNITION COIL 4 WARNING: When the engine is operating, do not stand in direct Using a 12 volt test light connected to 12 volts, check the (K15) Coil 4 Crank the engine for 5 seconds. NOTE: The test light should blink each time the circuit is activated Does the test light blink each time the circuit is activated by Yes >> Replace the Ignition Coil 4 in accordance with the Service Information. Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING). No >> Go to 5 5. POWERTRAIN CONTROL MODULE (PCM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Ignition Coil 4 and Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Refer to any Technical Service Bulletins that may apply. Were any problems found? Yes >> Repair as necessary. Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING). No >> Replace and program the Powertrain Control Module (PCM) in accordance with the Service Information. Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING). PM ENGINE ELECTRICAL DIAGNOSTICS - GPEC 9 - 343 |