Circuit/System Testing

WARNING: This page is about a different car, the 2019 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.

Ignition OFF/Vehicle OFF and all vehicle systems OFF, disconnect the harness connector at the appropriate X80 Accessory Power Receptacle or E32 Cigarette Lighter Receptacle. It may take up to 2 min for all vehicle systems to power down.
Test for less than 10 Ω between the ground circuit terminal C and ground.
- If greater than 10 Ω
1. Ignition OFF/Vehicle OFF.
2. Test for less than 2 Ω in the ground circuit end to end.
  - If 2 Ω or greater, repair the open/high resistance in the circuit.
  - If less than 2 Ω, repair the open/high resistance in the ground connection.
- Go to next step: If less than 10 Ω
Ignition ON/Vehicle in Service Mode.
Verify that a test lamp illuminates between the control circuit terminal A and ground.
- If the test lamp does not illuminate and the fuse/circuit breaker is good
1. Ignition OFF/Vehicle OFF.
2. Test for less than 2 Ω in the control circuit end to end.
  - If greater than 2 Ω, repair the open/high resistance in the circuit.
  - If less than 2 Ω, verify the fuse/circuit breaker is not open and there is voltage at the fuse/circuit breaker. Refer to Retained Accessory Power Malfunction .
- If the test lamp does not illuminate and the fuse/circuit breaker is open
1. Ignition OFF/Vehicle OFF.
2. Test for infinite resistance between the control circuit terminal A and ground.
  - If less than infinite resistance, repair the short to ground on the circuit.
  - If infinite resistance, replace the appropriate X80 Accessory Power Receptacle or E32 Cigarette Lighter Receptacle.
- Go to next step: If the test lamp illuminates
Replace the appropriate X80 Accessory Power Receptacle or E32 Cigarette Lighter Receptacle.