Circuit/System Testing

Ignition/Vehicle & All vehicle systems - Off
Disconnect the electrical connector: X1 @ P17 Info Display Module
Ignition - On / Vehicle - In Service Mode - Infotainment System State - On
Test for greater than 3 V between the test points: Signal circuit terminal 6 & Ground
- If less than 3 V
1. Ignition/Vehicle & All vehicle systems - Off
2. Disconnect the electrical connector: X1 @ A11 Radio
3. Test for infinite resistance between the test points: 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
4. Test for less than 2 Ω between the test points: Signal circuit terminal 6 & The other end of the circuit
  - If 2 Ω or greater - Repair the open/high resistance in the circuit.
  - If less than 2 Ω - Replace the component: A11 Radio
- Go to next step: If greater than 3.0 V
Test for battery voltage between the test points: 12 V Reference circuit terminal 1 & Ground
- If less than battery voltage
1. Ignition/Vehicle - Off
2. Disconnect the electrical connector: X1 @ A11 Radio
3. Test for infinite resistance between the test points: 12 V Reference circuit terminal 1 @ P17 Info Display Module Component harness & Ground
  - If less than infinite resistance - Repair the short to ground on the circuit.
  - Go to next step: If infinite resistance
4. Test for less than 2 Ω between the test points: 12 V Reference circuit terminal 1 @ P17 Info Display Module Component harness & The other end of the circuit
  - If 2 Ω or greater - Repair the open/high resistance in the circuit.
  - If less than 2 Ω - Replace the component: A11 Radio
- Go to next step: If battery voltage
Cycle the dimmer switch from low to high while monitoring voltage between P17 Info Display Module connector X1 terminal 9 and ground.
Verify voltage varies between 0 and 3.5 V
- If not between 0 and 3.5 V
1. Ignition/Vehicle - Off
2. Disconnect the electrical connector: X1 @ A11 Radio
3. Test for infinite resistance between the test points: Control circuit terminal 9 @ P17 Info Display Module Component harness & Ground
  - If less than infinite resistance - Repair the short to ground on the circuit.
  - Go to next step: If infinite resistance
4. Test for less than 2 Ω between the test points: Control circuit terminal 9 @ P17 Info Display Module Component harness & The other end of the circuit
  - If 2 Ω or greater - Repair the open/high resistance in the circuit.
  - If less than 2 Ω - Replace the component: A11 Radio
- Go to next step: If between 0 and 3.5 V
Connect all electrical connectors.
Verify the following conditions do not exist:
Damaged, defective, or loose component: Low-Voltage Differential Signaling Cable
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
- If the component does not work as specified
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
  - If the component does not work as specified
    Replace the component: A11 Radio
  - Go to next step: If the component works as specified
4. All OK.
- Go to next step: If the component works as specified
Replace the component: Low-Voltage Differential Signaling Cable