Pcm Coding
NOTE:
When using Volkswagen Audi Group (VAG) 1551 scan tool, follow manufacturer's instructions for operation. VAG 1551 scan tool is necessary to perform PCM coding.
If Powertrain Control Module (PCM) is replaced, it is necessary to code new PCM. If new PCM is not properly coded, the following problems may occur:
- Driveability problems (i.e., harsh shifting).
- False malfunctions stored in PCM memory.
- Increased fuel consumption.
- Increased exhaust emissions.
- Reduction in transmission life.
- All PCM functions are not carried out (i.e., EVAP system operation).
Connect VAG 1551 scan tool to Data Link Connector (DLC). Following manufacturer's instructions, access PCM coding information using VAG 1551 scan tool. For PCM coding options, see appropriate PCM CODING OPTIONS table.
As an example, a properly coded PCM for an A4 model with Front Wheel Drive (FWD) without traction control and 5-speed manual transmission would look like 06001 on the VAG 1551 scan tool.
NOTE:
After coding PCM and starting engine for first time, allow engine to idle for several minutes so PCM can go through a learn function. Idle speed may be erratic while PCM is learning.
PCM CODING OPTIONS
| Application/Code | Option | |
|---|---|---|
| Country/Emissions | ||
| 06 | USA Equipped With | |
| EVAP Leak Detection Pump | ||
| 0 | Front Wheel Drive Without Traction Control | |
| 1 | Front Wheel Drive With Traction Control | |
| 2 | All Wheel Drive Without Traction Control | |
| 3 | All Wheel Drive With Traction Control | |
| Transmission | ||
| 0 | 5-Speed Manual Transmission | |
| 5 | Automatic Transmission 01V | |
| Vehicle Type | ||
| 1 | A4 | |
PCM CODING OPTIONS
| Application/Code | Option | |
|---|---|---|
| Country/Emissions | ||
| 06 | USA Equipped With EVAP Leak Detection Pump | |
| 0 | Front Wheel Drive Without Traction Control | |
| 1 | Front Wheel Drive With Traction Control | |
| 2 | All Wheel Drive Without Traction Control | |
| 3 | All Wheel Drive With Traction Control | |
| Transmission | ||
| 0 | 5-Speed Manual Transmission | |
| 5 | Automatic Transmission 01V | |
| Vehicle Type | ||
PCM CODING OPTIONS
| Application/Code | Option | |
|---|---|---|
| Country/Emissions | ||
| 01 | Vehicle With Exhaust Gas Recirculation (EGR) | |
| Drive/Auxiliary Function | ||
| 0 | Front Wheel Drive Without Traction Control | |
| 1 | Front Wheel Drive With Traction Control | |
| Transmission | ||
| 3 | Automatic Transmission 01N | |
| Vehicle Type | ||
| 4 | Cabriolet | |