Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2019CRUZE LS, 4D HATCHBACKREPAIR AND DIAGNOSISBODY & FRAMEDOOR LOCKSVEHICLE ACCESS SYSTEMDIAGNOSTIC INFORMATION AND PROCEDURESTRUNK/LIFTGATE AJAR INDICATOR MALFUNCTIONCIRCUIT/SYSTEM TESTING
2019 Chevrolet Cruze LS, 4D Hatchback
Circuit/System Testing
2019 Chevrolet Cruze LS, 4D HatchbackSECTION Circuit/System Testing
- Ignition/Vehicle - Off
- Disconnect the electrical connector: M40 Rear Compartment Lid Latch
- Ignition - On/Vehicle - In Service Mode
- Verify the scan tool parameter: Rear Closure Ajar Switch = Inactive
- If not the specified state
- Ignition/Vehicle - Off
- Disconnect the electrical connector: K9 Body Control Module
- Test for infinite resistance between the test points:
- {Notchback} Signal circuit terminal 4 @ Component harness & Ground
- {Hatchback} Signal circuit terminal 2 @ Component harness & Ground
- If less than infinite resistance - Repair the short to ground on the circuit.
- If infinite resistance - Replace the component: K9 Body Control Module
- Go to next step: If the specified state
- Connect a 3 A fused jumper wire between the test points:
- {Notchback} Signal circuit terminal 4 & Ground circuit terminal 2
- {Hatchback} Signal circuit terminal 2 & Ground circuit terminal 1
- Verify the scan tool parameter: Rear Closure Ajar Switch = Active
- If not the specified state
- Ignition/Vehicle - Off & Remove - Jumper wire(s)
- Disconnect the electrical connector: K9 Body Control Module
- Ignition - On/Vehicle - In Service Mode
- Test for less than 1 V between the test points:
- {Notchback} Signal circuit terminal 4 @ Component harness & Ground
- {Hatchback} Signal circuit terminal 2 @ Component harness & Ground
- If 1 V or greater - Repair the short to voltage on the circuit.
- Go to next step: If less than 1 V
- Ignition/Vehicle - Off
- Test for less than 2 ohms between the test points:
- {Notchback} Signal circuit terminal 4 @ Component harness & Terminal 5 X6 @ Control module harness
- {Hatchback} Signal circuit terminal 2 @ Component harness & Terminal 5 X6 @ Control module harness
- If 2 ohms or greater - Repair the open/high resistance in the circuit.
- If less than 2 ohms - Replace the component: K9 Body Control Module
- Go to next step: If the specified state
- Test or replace the component: M40 Rear Compartment Lid Latch
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.