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Home >> Jeep >> 1992 >> Cherokee Base, 2D Utility, 2.5 P, RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - Body Control Computer >> Self-Diagnostic Tests >> Test 10A - Short To Ground On Bus
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Test 10A - Short To Ground On Bus

NOTE: For connector terminal identification, see BODY CONTROL SYSTEM CONNECTORS under DIAGNOSTIC PROCEDURE. For wiring diagrams, see appropriate chassis wiring diagram in the WIRING DIAGRAMS Section.
CAUTION: Always turn ignition switch to OFF position prior to disconnecting or connecting any module connector.
  1. Using DRB-II, answer the question whether a module is present or not. Disconnect Anti-Lock Brake System (ABS) controller connector (if equipped). Controller is located to right of steering column. Check connector condition and clean or repair connector as necessary.
  2. If DRB-II does not display SHORT TO GROUND, replace ABS controller. Perform VERIFICATION TEST. If DRB-II displays SHORT TO GROUND, disconnect Single Board Engine Controller (SBEC) connector. Check connector condition and clean or repair connector as necessary.
  3. If DRB-II does not display SHORT TO GROUND, replace SBEC. Perform VERIFICATION TEST. If DRB-II displays SHORT TO GROUND, disconnect compass/mini-trip module connector (if equipped). Connector is located in overhead console. Check connector condition and clean or repair connector as necessary. If DRB-II does not display SHORT TO GROUND, replace compass/mini-trip module. Perform VERIFICATION TEST.
  4. If DRB-II displays SHORT TO GROUND, disconnect vehicle theft alarm module (if equipped). Module is located to right of steering column. Check connector condition and clean or repair connector as necessary. If DRB-II does not display SHORT TO GROUND, replace vehicle theft alarm module. Perform VERIFICATION TEST.
  5. If DRB-II displays SHORT TO GROUND, disconnect automatic temperature controller (if equipped). Module is located to right of steering column. Check connector condition and clean or repair connector as necessary. If DRB-II does not display SHORT TO GROUND, replace automatic temperature controller. Perform VERIFICATION TEST.
  6. If DRB-II displays SHORT TO GROUND, disconnect DRB-II. Using an external ohmmeter, check resistance between terminal No. 1 (Violet/Brown wire) of CCD bus diagnostic connector and ground. If resistance is less than 5 ohms, repair short to ground in Violet/Brown wire. Perform VERIFICATION TEST. If resistance is more than 5 ohms, repair short to ground in White/Black or White/Gray wire. Perform VERIFICATION TEST.
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