STEP/SEQUENCE RESULT WHAT TO DO NEXT TM 9-2320-363-20-1 Section 4 TROUBLESHOOTING CHARTS E. FLASH CODE: 82. - CRANKCASE MONITOR (CCM) SIGNAL VOLTAGE LOW (CONT’D) J1587 CODE: P984 - OIL LEVEL CIRCUIT FAILED LOW P101 -4CRANKCASE PRESSURE CIRCUIT FAILED LOW 82-8 Check for Open +5 Volt Line Turn ignition off. Less than or Go to 82-9. Disconnect engine harness equal to 5 ohms. connector at ECM, Install a jumper wire between Greater than The engine +5 Volt line (Ckt #416) sockets A and C of CCM 5 ohms or open. is open.  Repair open. harness connector. Then go to 82-30. Read resistance between sockets W1 and Y2 on engine harness connectors. 82-9 Check for Short Remove jumper wire. Less than or The engine +5 Volt line (ckt #416) Read resistance between sockets equal to 10,000 ohms. is shorted to return line (ckt #452). A and C on CCM harness Repair short. connector. Then go to 82-30. Greater than Go to 82-12. 10,000 ohms or open. 82-10 Check for Short to Battery Remove both fuses to ECM. All readings are Go to 82-12. Disconnect vehicle harness greater than 10,000 ohms and 6-way power harness or open. connectors at ECM. Read resistance between sockets Any reading is A short exists between sockets N1 of engine harness connector less than or equal to where less than 10,000 ohms and socket B3 of vehicle 10,000 ohms. resistance was read.  Repair harness connector. short and reinsert fuses ( or Also read resistance between reset breakers).  Then go to socket N1 on engine harness 82-30. connector and the following sockets on the 5-way power harness connector: A, and C. Change 3  3-345.387