Test 10A - Bus + & Bus - Shorted Together

WARNING: This page is about a different car, the 1995 Dodge Ram Wagon, 1995 Dodge Ram Van, 1995 Dodge Pickup, and 1995 Dodge Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION in appropriate TESTS W/CODES article below. For appropriate wiring diagram, see WIRING DIAGRAMS section. Perform TEST VER-1 after each repair.

TESTS W/CODES - 3.9L
TESTS W/CODES - 5.2L GASOLINE
TESTS W/CODES - 5.9L GASOLINE
CAUTION: Always turn ignition switch to OFF position prior to disconnecting or connecting any module connector.
1. Using scan tool, indicate whether vehicle is equipped with specific module. For module/system options available, refer to MODULE APPLICATIONS table under IDENTIFICATION. Turn ignition off. Disconnect Transmission Control Module (TCM) connector, if equipped.
2. Turn ignition on. If scan tool does not display BUS + & BUS -SHORTED TOGETHER, replace TCM. Perform TEST VER-1.
3. If scan tool displays BUS + & BUS - SHORTED TOGETHER, turn ignition off. Disconnect Powertrain Control Module (PCM) connector. Turn ignition on. If scan tool does not display BUS + & BUS -SHORTED TOGETHER, replace PCM. Perform TEST VER-1.
4. If scan tool displays BUS + & BUS - SHORTED TOGETHER, turn ignition off. Disconnect Controller Anti-Lock Brake (CAB) module connector, if equipped. Turn ignition on. If scan tool does not display BUS + & BUS - SHORTED TOGETHER, replace CAB module. Perform TEST VER-1.
5. If scan tool displays BUS + & BUS - SHORTED TOGETHER, turn ignition off. Disconnect Mechanical Instrument Cluster (MIC) or Electronic Instrument Cluster (EIC) connector. Turn ignition on. If scan tool does not display BUS + & BUS - SHORTED TOGETHER, replace MIC or EIC. Perform TEST VER-1.
6. If scan tool displays BUS + & BUS - SHORTED TOGETHER, turn ignition off. Disconnect Vehicle Theft Security System (VTSS) module connector, if equipped. Turn ignition on. If scan tool does not display BUS + & BUS - SHORTED TOGETHER, replace VTSS module. Perform TEST VER-1.
7. If scan tool displays BUS + & BUS - SHORTED TOGETHER, turn ignition off. Disconnect compass/mini-trip module connector, if equipped. Turn ignition on. If scan tool does not display BUS + & BUS - SHORTED TOGETHER, replace compass/mini-trip module. Perform TEST VER-1.
8. If scan tool displays BUS + & BUS - SHORTED TOGETHER, turn ignition off. Disconnect Infinity premium radio, if equipped. Turn ignition on. If scan tool does not display BUS + & BUS - SHORTED TOGETHER, replace radio/CD player. Perform TEST VER-1.
9. If scan tool displays BUS + & BUS - SHORTED TOGETHER, turn ignition off. Wait 2 minutes before proceeding. Disconnect Air Bag Control Module (ACM) connector, if equipped. Turn ignition on. If scan tool does not display BUS + & BUS - SHORTED TOGETHER, replace ACM. Perform TEST VER-1.
10. Disconnect Automatic Temperature Control (ATC) module connector, if equipped. Turn ignition on. If scan tool does not display BUS + & BUS - SHORTED TOGETHER, replace ATC module. Perform TEST VER-1.
11. If scan tool displays BUS + & BUS - SHORTED TOGETHER, turn ignition off. Disconnect Body Control Module (BCM) connectors, if equipped. Turn ignition on. If scan tool does not display BUS + & BUS - SHORTED TOGETHER, replace BCM. Perform TEST VER-1. If scan tool displays BUS + & BUS - SHORTED TOGETHER, disconnect scan tool from Data Link Connector (DLC).
12. Using an external ohmmeter, check resistance between DLC, CCD BUS positive circuit (Violet/Brown wire) and ground. If resistance is less than 5 ohms, repair CCD BUS wires for shorting together. Perform TEST VER-1. If resistance is more than 5 ohms, replace scan tool cable or cartridge as necessary. Perform TEST VER-1.

NOTE: Test procedures skip from TEST 10A to TEST 14A. No test procedures have been omitted.