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5. (F856) 5 VOLT SUPPLY CIRCUIT SHORTED TO THE (K75) VEHICLE SPEED SIGNAL CIRCUIT Turn the ignition off. Disconnect the Powertrain Control Module (PCM) connector. Measure the resistance between the (F856) 5 Volt Supply circuit and Is the resistance above 100 ohms? Yes >> Go to 6 No >> Repair the (F856) 5 Volt Supply circuit for a short to the (K75) Vehicle Speed Signal circuit. Perform the PCM Verification Test Ver. 1 (Refer to 9 - 6. VEHICLE SPEED SENSOR Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Vehicle Speed Sen- Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Inspect the Vehicle Speed Sensor for any condition that would result in an incorrect signal, such as damage, cor- Were any problems found? Yes >> Repair as necessary. Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING). No >> Replace the Vehicle Speed Sensor. Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING). 7. (F856) 5 VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE Turn the ignition off. Disconnect the Powertrain Control Module (PCM) connector. Turn the ignition on. Measure the voltage of the (F856) 5 Volt Supply circuit in the Vehicle Is there any voltage present? Yes >> Repair the (F856) 5 Volt Supply circuit for a short to volt- age. Perform the PCM Verification Test Ver. 1 (Refer to 9 - No >> Go to 8 PM ENGINE ELECTRICAL DIAGNOSTICS - GPEC 9 - 639 |