Pinpoint Test

CHECK THE All Terrain Control Module (ATCM) VOLTAGE SUPPLY CIRCUITS FOR AN OPEN
1. Ignition OFF.
2. Disconnect: All Terrain Control Module (ATCM).
3. Ignition ON.
4. Measure:
  
  Fig 1: Measuring All Terrain Control Module (ATCM) Connector Terminals
  Courtesy of FORD MOTOR CO.
  - Are the voltages greater than 11 volts?
  1. Yes: GO to 2 on page 2.
  2. No: VERIFY the Body Control Module (BCM) fuse 35 (5A) is OK. If OK, REPAIR the circuit in question. If not OK, REFER to the SYSTEM WIRING DIAGRAMS to identify the possible causes of the circuit short.
CHECK THE All Terrain Control Module (ATCM) GROUND CIRCUIT FOR AN OPEN
1. Ignition OFF.
2. Measure:
  
  Fig 2: Measuring All Terrain Control Module (ATCM) Connector Terminals
  Courtesy of FORD MOTOR CO.
  - Is the resistance less than 3 ohms?
  1. Yes: GO to 3 on page 3.
  2. No: REPAIR the circuit in question.
CHECK THE High Speed Controller Area Network (HS-CAN) CIRCUITS BETWEEN THE All Terrain Control Module (ATCM) AND THE Data Link Connector (DLC) FOR AN OPEN
1. Measure:
  
  Fig 3: Measuring High Speed Controller Area Network (HS-CAN) Connector Terminals
  Courtesy of FORD MOTOR CO.
  - Are the resistances less than 3 ohms?
  1. Yes: GO to 4 on page 4.
  2. No: REPAIR the circuit in question.
CHECK FOR CORRECT All Terrain Control Module (ATCM) OPERATION
1. Ignition OFF.
2. Disconnect and inspect the All Terrain Control Module (ATCM) connector.
3. Repair:
  - corrosion (replace connector or terminals - clean module pins)
  - damaged or bent pins - replace terminals/pins
  - pushed-out pins - replace pins as necessary
4. Reconnect the All Terrain Control Module (ATCM) connector. Make sure it seats and latches correctly.
5. Operate the system and verify the concern is still present.
  - Is the concern still present?
  1. Yes: CHECK On-Line Automotive Service Information System (OASIS) for any applicable Technical Service Bulletins (TSBs). If a Technical Service Bulletin (TSB) exists for this concern, discontinue this test and follow Technical Service Bulletin (TSB) instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new All Terrain Control Module (ATCM). REFER to ALL TERRAIN CONTROL MODULE (ATCM) .
  2. No: The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector.