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Home >> Jeep >> 1999 >> Grand Cherokee Laredo, 4.0 S, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 54 (Body Control Computer) >> Testing >> Vehicle Communications Tests >> Test 12E - Bus Short To Battery

Test 12E - Bus Short To Battery

WARNING: This page is about a different car, the 1996 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn ignition off. Using external ohmmeter, measure resistance passenger door module 12-pin connector, terminals No. 3 (Gray/Black wire) and No. 8 (Violet/Brown wire). If resistance is less than 5 ohms, repair short between Gray/Black wire and Violet/Brown wire. If resistance is 5 ohms or greater, go to next step.
  2. Measure resistance passenger door module 12-pin connector, terminals No. 4 (Dark Green/White wire) and No. 8 (Violet/Brown wire). If resistance is less than 5 ohms, repair short between Dark Green/White wire and Violet/Brown wire. If resistance is 5 ohms or greater, go to next step.
  3. Measure resistance passenger door module 12-pin connector, terminals No. 3 (Gray/Black wire) and No. 9 (White/Black wire). If resistance is less than 5 ohms, repair short between Gray/Black wire and White/Black wire. If resistance is 5 ohms or greater, go to next step.
  4. Measure resistance passenger door module 12-pin connector, terminals No. 4 (Dark Green/White wire) and No. 9 (White/Black wire). If resistance is less than 5 ohms, repair short between Dark Green/White wire and White/Black wire. If resistance is 5 ohms or greater, go to next step.
  5. Measure resistance passenger door module 12-pin connector, terminals No. 8 (Violet/Brown wire) and No. 11 (Pink wire). If resistance is less than 5 ohms, repair short between Violet/Brown wire and Pink wire. If resistance is 5 ohms or greater, go to next step.
  6. Measure resistance passenger door module 12-pin connector, terminals No. 9 (White/Black wire) and No. 11 (Pink wire). If resistance is less than 5 ohms, repair short between White/Black wire and Pink wire. If resistance is 5 ohms or greater, replace passenger door module.
NOTE: For connector terminal ID, see CONNECTOR IDENTIFICATION  and WIRING DIAGRAM  . After each repair, perform VERIFICATION TEST VER-1.
CAUTION: Always turn ignition off prior to disconnecting any module connector.
NOTE: Check all appropriate BCM circuits for short to CCD bus circuits. See wiring diagram. Repair as needed. Following testing are the most common examples.
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