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2. (F856) 5 VOLT SUPPLY CIRCUIT VOLTAGE Turn the ignition off. Disconnect the Vehicle Speed Sensor connector. Turn the ignition on. Measure the voltage of the (F856) 5 Volt Supply circuit in the Vehicle Is the voltage between 4.5 and 5.5 volts? Yes >> Go to 3 No >> Go to 7 3. (K75) VEHICLE SPEED SIGNAL CIRCUIT VOLTAGE Measure the voltage of the (K75) Vehicle Speed Signal circuit in the Is the voltage between 4.5 and 5.5 volts? Yes >> Go to 4 No >> Go to 11 4. (K914) SENSOR GROUND CIRCUIT TEST Turn the ignition off. Using a 12 volt test light connected to 12 volts, check the (K914) Sensor Ground in the Vehicle Speed Sensor NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connec- Is the test light illuminated and bright? Yes >> Go to 5 No >> Go to 15 PM ENGINE ELECTRICAL DIAGNOSTICS - GPEC 9 - 443 |