FixVault
Home › Jeep › 1998 › Grand Cherokee Laredo, 4.0 S, AWD › Repair and Diagnosis › Body & Frame › Body, Cab Control Systems › Body Control Computer › System Testing › Vehicle Communications › Test 13B - Bus Short To Battery

Test 13B - Bus Short To Battery

  1. Turn ignition off. Using external ohmmeter, measure resistance between terminals C11 (Yellow/Red wire) and C30 (Violet/Brown wire) on Powertrain Control Module (PCM) Gray connector. PCM is located at right corner of firewall. If resistance is less than 5 ohms, repair short between Yellow/Red wire and Violet/Brown wire. If resistance is 5 ohms or greater, go to next step.
  2. Measure resistance between terminals C11 (Yellow/Red wire) and C28 (White/Black wire) on PCM Gray connector. If resistance is less than 5 ohms, repair short between Yellow/Red wire and White/Black wire. If resistance is 5 ohms or greater, replace PCM.
NOTE: For connector terminal identification, refer to CONNECTOR IDENTIFICATION  . For wiring diagrams, refer to WIRING DIAGRAMS  . After each repair, perform TEST VER-1A  .
CAUTION: Always turn ignition off prior to disconnecting any module connector.
About FixVault