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Circuit/System Testing

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  1. Ignition OFF, disconnect inline harness connector X431. it may take up to 2 min for all vehicle systems to power down.
    NOTE:

    All testing is done at the K23 Folding Top Control Module harness side of the connector.

  2. Test for less than 10 Ω between the low reference circuit terminal 1 and ground.
    • If 10 Ω or greater 
    1. Ignition OFF, disconnect the harness connector at the K23 Folding Top Control Module.
    2. Test for less than 2 Ω in the low reference circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the K23 Folding Top Control Module.
    • Go to next step: If less than 10 Ω 
  3. Ignition ON.
  4. Test for 4.8 - 5.2 V between the 5 V reference circuit terminal 5 and ground.
    • If less than 4.8 V 
    1. Ignition OFF, disconnect the harness connector at the K23 Folding Top Control Module.
    2. Test for infinite resistance between the 5 V reference circuit 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 5 V reference circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the K23 Folding Top Control Module.
    • If greater than 5.2 V 
    1. Ignition OFF, disconnect the harness connector at the K23 Folding Top Control Module, ignition ON.
    2. Test for less than 1 V between the 5 V reference circuit and ground.
      • If 1 V or greater, repair the short to voltage on the circuit.
      • If less than 1 V, replace the K23 Folding Top Control Module.
    • Go to next step: If between 4.8 - 5.2 V 
  5. Verify the scan tool B242 Folding Top Stowage Compartment Flaps Enable Sensor parameter equals 0 V.
    • If not equal 0 V 
    1. Disconnect the harness connector at the K23 Folding Top Control Module.
    2. Test for less than 1 V between the signal circuit and ground.
      • If 1 V or greater, repair the short to voltage on the circuit.
      • If less than 1 V replace the K23 Folding Top Control Module
    • Go to next step: If equal to 0 V 
  6. Install a 3 A fused jumper wire between the signal circuit terminal 6 and 5 V reference circuit terminal 5.
  7. Verify the scan tool B242 Folding Top Stowage Compartment Flaps Enable Sensor parameter is greater than 4.8 V.
    • If less than 4.8 V 
    1. Disconnect the harness connector at the K23 Folding Top Control Module.
    2. Test for infinite resistance between the signal circuit terminal 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 signal circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the K23 Folding Top Control Module.
    • Go to next step: If greater than 4.8 V 
  8. Replace the B242 Folding Top Stowage Compartment Flap Enable Sensor.
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