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Home >> Chevrolet >> 2016 >> Malibu LS >> Repair and Diagnosis >> Engine Performance >> System >> Data Communication System - DTC B1000 To DTC U1500 >> Diagnostic Information and Procedures >> DTC P24EF, P24F0, or P24F1: Control Module Wake-up Circuit >> Circuit/System Testing

Circuit/System Testing

NOTE:

Use the schematic to determine which devices are on the accessory wakeup serial data 2 circuit. Use the connector end view to identify the accessory wakeup serial data 2 circuit terminal for each of those devices.

P24F0

  1. Ignition/Vehicle OFF, disconnect the harness connectors at an easily accessible device that shares the accessory wakeup serial data 2 circuit. Ignition ON/Vehicle In Service Mode.
  2. Verify that the DTC P24F0 remains current.
    • If the DTC becomes history 

      Replace the device that was just disconnected.

    • If the DTC remains current 
  3. With the prior devices disconnected, repeat steps 1 and 2 for each device on the accessory wakeup serial data 2 circuit except the K114B Hybrid/EV Powertrain Control Module 2.
  4. Ignition/Vehicle OFF, disconnect the X3 harness connector at the K114B Hybrid/EV Powertrain Control Module 2.
  5. Test for infinite resistance between the accessory wakeup serial data 2 circuit terminal 8 X3 at the K114B Hybrid/EV Powertrain Control Module 2 and ground.
    • If less than infinite resistance 

      Repair the short to ground on the circuit.

    • If infinite resistance 
  6. Replace the K114B Hybrid/EV Powertrain Control Module 2.

P24F1

  1. Ignition/Vehicle OFF, disconnect the harness connectors at an easily accessible device that shares the accessory wakeup serial data 2 circuit. Ignition ON/Vehicle In Service Mode.
  2. Verify that the DTC P24F1 remains current.
    • If the DTC becomes history 

      Replace the device that was just disconnected.

    • If the DTC remains current 
  3. With the prior devices disconnected, repeat steps 1 and 2 for each device on the accessory wakeup serial data 2 circuit except the K114B Hybrid/EV Powertrain Control Module 2.
  4. Ignition/Vehicle OFF, disconnect the X3 harness connector at the K114B Hybrid/EV Powertrain Control Module 2, ignition ON/Vehicle In Service Mode.
  5. Test for less than 1 V between the accessory wakeup serial data 2 circuit terminal 8 X3 at the K114B Hybrid/EV Powertrain Control Module 2 and ground.
    • If 1 V or greater 

      Repair the short to voltage on the circuit.

    • If less than 1 V 
  6. Replace the K114B Hybrid/EV Powertrain Control Module 2.
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