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Home >> Chevrolet >> 2021 >> Express 2500 Base, Van Cargo Extended, 2.8L Eng VIN 1 >> Repair and Diagnosis >> Body & Frame >> Body, Cab Control Systems >> Vehicle Access System >> Diagnostic Information and Procedures >> DTC B3265 >> Circuit/System Testing

Circuit/System Testing

  1. Ignition OFF
  2. Disconnect the X7 harness connector at the K9 Body Control Module, ignition ON.
  3. Momentarily connect a 3A fused jumper wire between the control circuit terminal 2 and B+.
  4. Verify the M13 Door Latch Assembly- Rear Cargo activates.
    • If the M13 Door Latch Assembly- Rear Cargo does not activate 
    1. Ignition OFF, remove the jumper wire, disconnect the X1 harness connector at the X52A Fuse Block-Passenger Compartment.
    2. Test for infinite resistance between the K9 Body Control Module control circuit terminal 2 X 7 and ground.
      • If less than Infinite resistance, repair the short to ground on the circuit.
      • Go to next step: If infinite resistance
    3. Test for less than 2 Ω in the control circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, test or replace the 52A Fuse Block-Passenger Compartment.
    • Go to next step: If the M13 Door Latch Assembly- Rear Cargo activates 
  5. Replace the K9 Body Control Module.
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