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5. CHECKING (F856) 5-VOLT SUPPLY CIRCUIT Disconnect the ECM harness connectors. Measure the voltage of the (F856) CMP Sensor 5-Volt Supply circuit. Select the appropriate voltage reading. Voltage is above 5.4 volts. Repair the (F856) CMP 5-Volt Supply circuit for a short to Perform the ECM Verification Test Ver. 1 (Refer to 9 - Voltage is between 4.7 and 5.4 volts. Go To 6 Voltage is below 4.7 volts. Go To 10 6. (K944) SENSOR GND CKT OPEN Turn the ignition off. Measure the resistance of the (K944) Sensor Ground circuit between Is the resistance below 10.0 ohms? Yes >> Go To 7 No >> Repair the (K944) Sensor Ground circuit for an open. Perform the ECM Verification Test Ver. 1 (Refer to 9 - 9 - 918 ENGINE DIESEL DIAG KJ |