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Bus (+) & Bus (-) Shorted Together

CAUTION: Always turn ignition switch to OFF position prior to disconnecting any module connector or battery.
  1. Turn ignition switch to OFF position. Disconnect Powertrain Control Module (PCM) Black connector C3 (Gray connector on Durango). Connect scan tool to DLC. Turn ignition switch to ON position. If scan tool does not display BUS (+) & BUS (-) SHORTED TOGETHER, replace PCM. Perform BODY VERIFICATION TEST  . See POWERTRAIN CONTROL MODULE (PCM) VERIFICATION TEST  . If scan tool displays BUS (+) & BUS (-) SHORTED TOGETHER, go to next step.
  2. Turn ignition switch to OFF position. Disconnect Controller Anti-Lock Brake (CAB) module. CAB module is mounted to top of hydraulic unit, near master cylinder. Turn ignition switch to ON position. If scan tool does not display BUS (+) & BUS (-) SHORTED TOGETHER, replace CAB module. Perform CONTROLLER ANTI-LOCK BRAKE (CAB) VERIFICATION TEST  . If scan tool displays BUS (+) & BUS (-) SHORTED TOGETHER, go to next step.
  3. Turn ignition switch to OFF position. Disconnect Mechanical Instrument Cluster (MIC). Turn ignition switch to ON position. If scan tool does not display BUS (+) & BUS (-) SHORTED TOGETHER, replace MIC circuit board. Perform BODY VERIFICATION TEST  . If scan tool displays BUS (+) & BUS (-) SHORTED TOGETHER, go to next step.
  4. Turn ignition switch to OFF position. Disconnect Compass Mini Trip Computer (CMTC). Turn ignition switch to ON position. If scan tool does not display BUS (+) & BUS (-) SHORTED TOGETHER, replace CMTC. Perform BODY VERIFICATION TEST  . If scan tool displays BUS (+) & BUS (-) SHORTED TOGETHER, go to next step.
  5. Turn ignition switch to OFF position. Disconnect radio connectors. Turn ignition switch to ON position. If scan tool does not display BUS (+) & BUS (-) SHORTED TOGETHER, replace radio. Perform BODY VERIFICATION TEST  . If scan tool displays BUS (+) & BUS (-) SHORTED TOGETHER, go to next step.
  6. Turn ignition switch to OFF position. Wait 2 minutes. Disconnect Air Bag Control Module (ACM). See COMPONENT LOCATIONS  . Turn ignition switch to ON position. If scan tool does not display BUS (+) & BUS (-) SHORTED TOGETHER, replace ACM. Perform AIR BAG VERIFICATION TEST  . If scan tool displays BUS (+) & BUS (-) SHORTED TOGETHER, go to next step.
  7. Turn ignition switch to OFF position. Disconnect Central Timer Module (CTM). CTM is located in passenger-side corner of dash, behind glove box. Turn ignition switch to ON position. If scan tool does not display BUS (+) & BUS (-) SHORTED TOGETHER, replace CTM. Perform BODY VERIFICATION TEST  . If scan tool displays BUS (+) & BUS (-) SHORTED TOGETHER, go to next step.
  8. Disconnect scan tool from DLC. Using DVOM, measure resistance between terminals No. 3 (Violet/Brown wire) and No. 11 (White/Black wire) on DLC connector. If reading is less than 5 ohms, repair short between Violet/Brown wire and White/Black wire. Perform BODY VERIFICATION TEST  . If reading is 5 ohms or more, replace scan tool cable or scan tool as necessary.
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