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Home >> Chevrolet >> 2019 >> Cruze Premier, 4D Hatchback >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Engine Controls And Fuel - 1.6L (LH7) Diesel - Diagnostic Information And Procedures (P208A-P31BF) And Symptoms) >> Diagnostic Information and Procedures >> DTC P2453 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different variant/trim than selected.
  1. Verify the following conditions do not exist with the air induction system:
    • A loose air inlet duct
    • A loose turbocharger air inlet clamp
    • A damaged air cleaner housing
    • A loose, leaking, or cracked intake manifold air resonator
    • A cracked or damaged MAF sensor housing
    • A skewed, stuck in range, or slow responding MAF sensor - Inspect the MAF sensor for contamination.
    • If a condition is found 

      Repair as necessary

    • Go to next step: If no condition is found 
  2. Verify the following conditions do not exist with the DPF, exhaust, and fuel system:
    • Any damaged exhaust system components
    • Loose or improperly installed exhaust system components.
    • Restrictions in the B154 Exhaust Pressure Differential sensor ports
    • Incorrect differential pressure line routing
    • Damaged, bent, completely restricted, exhaust differential pressure lines
    • Inspect for fuel contaminates. Refer to Contaminants-in-Fuel Diagnosis .
    • If a condition is found 

      Repair as necessary

    • Go to next step: If no condition is found 
  3. Ignition Off and all vehicle systems Off, disconnect the harness connector at the B154 Exhaust Pressure Differential sensor. It may take up to 2 minutes for all vehicle systems to power down.
  4. Test for less than 5 Ω between the low reference circuit terminal 2 and ground.
    • If 5 Ω or greater 
    1. Ignition Off, disconnect the X2 connector at the K20 Engine 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 K20 Engine Control Module.
    • Go to next step: If less than 5 Ω 
  5. Ignition On.
  6. Test for 4.8 - 5.2 V between the 5 V reference circuit terminal 1 and ground.
    • If less than 4.8 V 
    1. Ignition Off, disconnect the X2 connector at the K20 Engine 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 K20 Engine Control Module.
    • If greater than 5.2 V 
    1. Ignition Off, disconnect the X2 connector at the K20 Engine 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 K20 Engine Control Module.
    • Go to next step: If between 4.8 - 5.2 V 
  7. Connect the harness connector at the B154 Exhaust Pressure Differential sensor.
  8. Verify the scan tool DPF Differential Pressure Sensor parameter is greater than 0.0 V and less than 4.8 V.
    • If between 4.8 - 5.2 V 
    1. Ignition Off, disconnect the X2 connector at the K20 Engine Control Module.
    2. Test for infinite resistance between the signal circuit terminal 3 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 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 K20 Engine Control Module.
    • If greater than 5.2 V 
    1. Ignition Off, disconnect the harness connector at the B154 Exhaust Pressure Differential sensor and K20 Engine Control Module.
    2. Ignition On.
    3. Test for less than 1 V between the signal circuit and ground.
      • If 1 V or greater, repair the short to voltage in the circuit.
      • Go to next step: If less than 1 V
    4. Ignition Off.
    5. Test for less than 2 Ω in the 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 K20 Engine Control Module.
    • If 0.0 V 
    1. Ignition Off, disconnect the X2 connector at the K20 Engine Control Module.
    2. Test for infinite resistance between the signal circuit terminal 3 and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance, replace the K20 Engine Control Module.
    • Go to next step: If greater than 0.0 V and less than 4.8 V 
  9. Test or replace the B154 Exhaust Pressure Differential sensor.
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