DTC B1009 EEPROM Checksum Error. Opel Sintra 1999

For 1990-2009 cars

### Circuit Description

The PASS-Key® III (VTD) module sets code B1009 if the processor detects a non-volatile memory checksum error during normal operations.

### Conditions for Setting the DTC

DTC B1009 indicates that the PK3 processor's non-volatile memory checksum is in error.

### Action Taken When the DTC Sets

• | The VTD module enters the fail enable mode and allows the vehicle to start and run.

• | The VTD module stores a DTC B1009 in memory.

• | The PASS-KEY telltale will be illuminated.

### Conditions for Clearing the DTC

• | A history DTC will clear after 100 consecutive ignition cycles if the condition for the fault is no longer present.

• | The use of the scan tool.

### Diagnostic Aids

This code indicates an internal processor malfunction.

Before replacing the PASS-Key® III module, clear the codes with the scan tool and retest the module.