Circuit/System Testing

WARNING: This page is about a different car, the 2018 Chevrolet Bolt EV. However, it is still accessible from the selected car via links, so may be relevant.

Ignition/Vehicle & All vehicle systems - Off
Verify the following conditions do not exist:
Damaged, defective, or loose component: Low-Voltage Differential Signaling Cable
If you detect any damage, replace the component.
Disconnect the electrical connector: X1 @ P17 Info Display Module
Test for infinite resistance between the test points:
- Signal circuit terminal 5 & Ground
- Signal circuit terminal 6 & Ground
- If less than infinite resistance - Repair the short to ground on the circuit.
- Go to next step: If infinite resistance
Connect the electrical connector: X1 @ P17 Info Display Module
Disconnect the electrical connector: Low-Voltage Differential Signaling Cable @ P17 Info Display Module
Connect - EL-50334-2 USB Type A Female to Type B Mini Male Adapter @ P17 Info Display Module & EL-50334-14 Infotainment Test Cable
Disconnect the electrical connector: Low-Voltage Differential Signaling Cable @ A11 Radio
Connect - EL-50334-14 Infotainment Test Cable @ A11 Radio
Ignition - On/Vehicle - In Service Mode - Infotainment System State - ON
Verify the component works as specified: P17 Info Display Module - DTC B127E = Not set
- If the component does not work as specified - DTC B127E is set.
1. Replace the component: P17 Info Display Module - Connect all electrical connectors.
2. Ignition - On/Vehicle - In Service Mode - Infotainment System State - ON
3. Verify the component works as specified: P17 Info Display Module - DTC B127E = Not set
  - If the component does not work as specified - DTC B127E is set.
    Replace the component: A11 Radio
  - Go to next step: If the component works as specified - DTC B127E = Not set
4. All OK.
- Go to next step: If the component works as specified
Replace the component: Low-Voltage Differential Signaling Cable