For 1990-2009 cars

## DTC P1630 3.6L (LY7)

### 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 P1630: CTD Learn Mode Enable

### Circuit/System Description

The vehicle theft deterrent (VTD) system is incorporated within the remote control door lock receiver (RCDLR). If the RCDLR has been replaced, the password must be relearned by the engine control module (ECM). If the ECM is replaced, the replacement ECM should learn the password within a few seconds after the ignition is turned ON. This is an information code indicating that the ECM is ready to learn the VTD password.

### Conditions for Running the DTC

• | The ignition is ON.

• | DTC P1630 runs continuously once the above conditions are met for about 5 seconds.

### Conditions for Setting the DTC

The ECM remains in the password learn mode for the specified time.

### Action Taken When the DTC Sets

• | The ECM sends a serial data message to the instrument panel cluster (IPC) to illuminate the SECURITY indicator.

• | The ECM will not illuminate the malfunction indicator lamp (MIL).

### Conditions for Clearing the DTC

• | The history DTC clears after 40 malfunction-free warm-up cycles.

• | The DTC can be cleared with the scan tool.

### Reference Information

#### Schematic Reference

Theft Deterrent System Schematics

#### Connector End View Reference

Master Electrical Component List

#### Description and Operation

Content Theft Deterrent (CTD) Description and Operation

#### Electrical Information Reference

• | Circuit Testing

• | Connector Repairs

• | Testing for Intermittent Conditions and Poor Connections

#### Scan Tool Reference

• | Scan Tool Data List

• | Scan Tool Data Definitions

### Circuit/System Verification

Use the scan tool to verify that DTC P1630 is not set.

⇒ | If the DTC is set, refer to Programming CTD Components (Domestic, Canada, Japan) or Programming CTD Components (Export).

### Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

## DTC P1630 4.6L (LH2)

### 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 P1630: CTD Learn Mode Enable

### Circuit/System Description

The vehicle theft deterrent (VTD) system is incorporated within the remote control door lock receiver (RCDLR). If the RCDLR has been replaced, the password must be relearned by the engine control module (ECM). If the ECM is replaced, the replacement ECM should learn the password within a few seconds after the ignition is turned ON. This is an information code indicating that the ECM is ready to learn the VTD password.

### Conditions for Running the DTC

• | The ignition is ON.

• | DTC P1630 runs continuously once the above conditions are met for about 5 seconds.

### Conditions for Setting the DTC

The ECM remains in the password learn mode for the specified time.

### Action Taken When the DTC Sets

• | The ECM sends a serial data message to the instrument panel cluster (IPC) to illuminate the SECURITY indicator.

• | The ECM will not illuminate the malfunction indicator lamp (MIL).

### Conditions for Clearing the DTC

• | The history DTC clears after 40 malfunction-free warm-up cycles.

• | The DTC can be cleared with the scan tool.

### Reference Information

#### Schematic Reference

Theft Deterrent System Schematics

#### Connector End View Reference

Master Electrical Component List

#### Description and Operation

Content Theft Deterrent (CTD) Description and Operation

#### Electrical Information Reference

• | Circuit Testing

• | Connector Repairs

• | Testing for Intermittent Conditions and Poor Connections

#### Scan Tool Reference

• | Scan Tool Data List

• | Scan Tool Data Definitions

### Circuit/System Verification

Use the scan tool to verify that DTC P1630 is not set.

⇒ | If the DTC is set, refer to Programming CTD Components (Domestic, Canada, Japan) or Programming CTD Components (Export).

### Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.