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Possible Causes (D25) PCI BUS CIRCUIT OPEN AT DATA LINK CONNECTOR (DLC) (D25) PCI BUS CIRCUIT SHORTED TO GROUND (D25) PCI BUS CIRCUIT SHORTED TO VOLTAGE ANY PCI BUS MODULE INTERNALLY SHORTED TO GROUND ANY PCI BUS MODULE INTERNALLY SHORTED TO VOLTAGE Diagnostic Test 1. PCI BUS COMMUNICATION AND TEST FOR INTERMITTENT CONDITION Turn the ignition on. NOTE: Ensure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts. NOTE: A red X will be next to the module that is not communicating or not installed on the vehicle, indi- Does the scan tool communicate with any module on the PCI Bus network? Yes >> The conditions that caused this symptom are not present at this time. Using the wiring diagram/sche- matic as a guide, inspect the wiring and connectors. No >> Go To 2 2. (D25) PCI BUS CIRCUIT OPEN AT THE DLC NOTE: If the PCI Bus circuit is open between the BCM and the DLC Disconnect the negative battery cable. Disconnect the scan tool from the DLC. Disconnect the BCM C1 harness connector. Measure the resistance of the (D25) PCI Bus circuit between the DLC Is the resistance below 5.0 ohms? Yes >> Go To 3 No >> Repair the (D25) PCI Bus circuit for an open. Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE). 8E - 128 ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTIC KJ |