LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Eagle >> 1993 >> Vision TSi >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - Body Control Computer >> Vehicle Communications Tests >> Test 9A - Short To Ground
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Test 9A - Short To Ground

NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION  . For appropriate wiring diagram, see WIRING DIAGRAMS  at end of article.
CAUTION: Always turn ignition switch to OFF position prior to disconnecting or connecting any module connector.
  1. Using DRB-II, indicate whether vehicle is equipped with specific module. Turn ignition off. Disconnect Transmission Control Module (TCM). TCM is located on left side of engine compartment, at front.
  2. Turn ignition on. If DRB-II does not display BUS SHORT TO GROUND, replace TCM. Perform VERIFICATION PROCEDURE VER-1. If DRB-II displays BUS SHORT TO GROUND, turn ignition off, and disconnect Powertrain Control Module (PCM). PCM is located under air box in engine compartment.
  3. Turn ignition on. If DRB-II does not display BUS SHORT TO GROUND, replace PCM. Perform VERIFICATION PROCEDURE VER-1. If DRB-II displays BUS SHORT TO GROUND, turn ignition off and disconnect Controller Anti-Lock Brake (CAB), if equipped. CAB is located on left fenderwell of engine compartment, behind anti-lock brake pump motor.
  4. Turn ignition on. If DRB-II does not display BUS SHORT TO GROUND, replace CAB. Perform VERIFICATION PROCEDURE VER-1. If DRB-II displays BUS SHORT TO GROUND, turn ignition off and disconnect Overhead Traveler Information System (OTIS) module, if equipped. OTIS is located at center of roof, above visors.
  5. Turn ignition on. If DRB-II does not display BUS SHORT TO GROUND, replace OTIS. Perform VERIFICATION PROCEDURE VER-1. If DRB-II displays BUS SHORT TO GROUND, turn ignition off and disconnect Auto Temperature Control (ATC) head, if equipped.
  6. Turn ignition on. If DRB-II does not display BUS SHORT TO GROUND, replace ATC. If DRB-II displays BUS SHORT TO GROUND, turn ignition off and disconnect Mechanical Instrument Cluster (MIC).
  7. Turn ignition on. If DRB-II does not display BUS SHORT TO GROUND, replace MIC. Perform VERIFICATION PROCEDURE VER-1. If DRB-II displays BUS SHORT TO GROUND, turn ignition off and disconnect Body Control Module (BCM). BCM is located behind right kick panel.
  8. Turn ignition on. If DRB-II does not display BUS SHORT TO GROUND, replace BCM. Perform VERIFICATION PROCEDURE VER-1. If DRB-II displays BUS SHORT TO GROUND, turn ignition off.
    CAUTION: Ensure ignition is off for 5 minutes before proceeding.
  9. Disconnect Passenger Air Bag System Diagnostic Module (PASDM). PASDM is located under center of instrument panel. Turn ignition on. If DRB-II does not display BUS SHORT TO GROUND, replace PASDM. Perform VERIFICATION PROCEDURE VER-1.
  10. If DRB-II displays BUS SHORT TO GROUND, use an external ohmmeter to check resistance between BCM Bone connector terminal No. 8, CCD bus positive circuit (Violet/Brown wire), and ground. If resistance is less than 5 ohms, repair short to ground in Violet/Brown wire. Perform VERIFICATION PROCEDURE VER-1.
  11. If resistance is more than 5 ohms, check resistance between ground and BCM Bone connector terminal No. 7, CCD bus negative circuit (White/Black wire).
  12. If resistance is less than 5 ohms, repair short to ground in White/Black wire. Perform VERIFICATION PROCEDURE VER-1. If resistance is more than 5 ohms, replace DRB-II cable or cartridge as necessary. Perform VERIFICATION PROCEDURE VER-1.
scientia non olet · About LEMON Manuals