For 1990-2009 cars

### Diagnostic Instructions

• | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

• | Review Strategy Based Diagnosis for an overview of the diagnostic approach.

• | Diagnostic Procedure Instructions provides an overview of each diagnostic category.

### DTC Descriptor

DTC U2203: No Communication With Screen 1
DTC U2204: No Communication With Screen 2

### Circuit/System Description

With the ignition in either the ACC position or the ON position the rear seat entertainment (RSE) interface module continuously sends a communication signal to the DVD screen/s. Upon receiving the signal, the DVD screen/s send a reply signal, confirming that they can communicate. DTC U2201 will set to indicate the DVD screen/s have not received a communication signal or replied when the RSE interface module has requested operation.

### Conditions for Running the DTC

DTC U2203 and U2204 run continuously once a valid DVD screen response occurs.

### Conditions for Setting the DTC

The RSE interface module does not receive a response from the DVD screen/s after 3 consecutive communication attempts.

### Action Taken When the DTC Sets

The rear seat entertainment system fails to operate.

### Conditions for Clearing the DTC

• | The current DTC will clear when the RSE interface module receives a communication reply from the DVD screen/s.

• | The history DTC will clear after 50 fault-free ignition cycles have occurred.

### Reference Information

#### Schematic Reference

Video System Schematics

#### Connector End View Reference

Component Connector End Views

#### Description and Operation

Video Entertainment System Description and Operation

#### Electrical Information Reference

• | Circuit Testing

• | Connector Repairs

• | Testing for Intermittent Conditions and Poor Connections

• | Wiring Repairs

#### Scan Tool Reference

Control Module References for scan tool information

### Circuit/System Testing

1. Ignition OFF, disconnect the audio/video interface module and DVD screen harness connectors.
2. Test the audio/video interface module and DVD screen; communication, power and ground circuits for short to ground or an open/high resistance.

⇒ | If the circuits test normal, repair or replace the effected circuit(s).

3. If the circuits test normal, replace the appropriate DVD screen.
4. If either DTC U2203 or U2204 resets, replace the Audio Video interface module.

### Repair Instructions

Perform the Diagnostic Repair Verification.

• | Video Display Replacement

• | Audio/Video Interface Module Replacement