VCDS DATA LOG ENGINE

This is a guide to making an engine data log using VCDS.

This is the method you want to use if you want to log specific engine measuring blocks.

Don't use this method to log ALL engine measuring blocks. (See: How to log all engine measuring blocks)

If you make your own "at idle" log, make sure the engine has run for at least 10 minutes and complete the log as quick as possible. (Some functions such as EGR change how they work if the car idles for too long, which can be confusing)

Assuming that your machinine is plugged in and the car ignition is on, the first screen looks like this:

Start the engine now

Click select to take you to the control module screen.

This screen shows all the control modules in your car.

Click 01 Engine to go to the engine control unit.

This is the engine control unit screen.

Click Meas Blocks -08. This will take you to the measuring block screen which will display THREE measuring blocks (e.g. Group 001) as shown below.

You can use the UP and DOWN buttons to change the Group.

Set the first group to 001, second group to 002 and third group to 003.

Click "add to log" button.

Now reset groups to 004, 005 and 006.

Click "add to log" button.

Now reset groups to 007, 008 and 009.

Click "add to log" button.

Keep changing the group numbers and clicking add to log. You will see that some measuring blocks (groups) have no useful data so don't log those.

When you have finished. Close everything down and look in the VCDS file on the laptop. You will have a folder called logs with dates. This is a notepad file (.txt). You can re-save this as an excel (.xls) file if you wish.

The following is a log I saved.

I have edited it to take out groups with no real data or text that doesn't help.

The engine has no known faults so the log can be used as a guide for a healthy engine.

Thursday,29,July,2010,11:34

VCDS Version: Release 10.6.0

Data version: 20100630

Address 01: Engine (03G 906 021 DP)

Group 001: Injection Quantity

819 /min Engine Speed (G28)

5.8 mg/str Injection Quantity

7.1°KW Injection Duration (specified)

75.6°C Coolant Temperature (G62)

Group 002: Idle Speed

819 /min Engine Speed (G28)

0.0 % Accel. Pedal Pos. Sensor 1 (G79)

0 01 0 Operation Status

75.6°C Coolant Temperature (G62)

Group 003: Exhaust Gas Recirculation (EGR)

819 /min Engine Speed (G28)

240.0 mg/str Exhaust Gas Recirculat. (spec.)

430.0 mg/str Exhaust Gas Recirculat. (actual)

95.5 % Exhaust Gas Recirc. Duty Cycle

Group 004: Pump-Jet Valves

819 /min Engine Speed (G28)

0.0 °BTDC Injection Start (specified)

7.1°KW Injection Duration (specified)

-0.5°KW Torsion Value

Group 005: Start Conditions (last Engine Start)

819 /min Engine Speed (G28)

13.5 mg/str Start Injection Quantity

48.0 Start Synchronisation

75.6°C Coolant Temperature (G62)

Group 006: Cruise Control System (CCS)

0.0 km/h Vehicle Speed (actual)

11000000 Pedal Monitoring

0.0 % Accel. Pedal Pos. Sensor 1 (G79)

00000000 Switch Monitoring

Group 007: Temperatures

59.4°C Fuel Temperature (G81)

39.6°C Intake Air Temperature (G72)

75.6°C Coolant Temperature (G62)

Group 008: Injection Quantity Limitation I (Torque Limitation)

819 /min Engine Speed (G28)

0.0 Nm Torque Request (Driver)

168.4 Nm Torque Limitation

153.7 Nm Smoke Limitation

Group 009: Injection Quantity Limitation II (Torque Limitation)

819 /min Engine Speed (G28)

-1280.0 Nm Torque Request (Cruise Control)

500.2 Nm Transmission Limitiation

153.7 Nm Torque Restriction

Group 010: Charge Pressure Control

430.0 mg/str Mass Air Flow (actual)

999.6 mbar Atmospheric Pressure

1030.2 mbar Boost Pressure (actual)

0.0 % Accel. Pedal Pos. Sensor 1 (G79)

Group 011: Charge Pressure Control

819 /min Engine Speed (G28)

1091.4 mbar Boost Pressure (specified)

1030.2 mbar Boost Pressure (actual)

80.1 % Charge Pressure Control Duty Cycle

Group 012: Glow Plugs

11111111 Glow Status

0.00 s Pre-Glow Period

14.44 V Supply Voltage (Terminal 30)

76.5°C Coolant Temperature (G62)

Group 013: Idle Stabilization (Injection Quantity Deviation)

-0.42 mg/str Injection Quantity Deviation Cyl. 1

-0.52 mg/str Injection Quantity Deviation Cyl. 2

0.71 mg/str Injection Quantity Deviation Cyl. 3

0.21 mg/str Injection Quantity Deviation Cyl. 4

Group 015: Fuel Consumption

819 /min Engine Speed (G28)

39.0 Nm Engine Torque

0.60 l/h Fuel Consumption

0.0 Nm Torque Request (Driver)

Group 016: Auxiliary Heating

31.4 % Generator Load

14.36 V Supply Voltage (Terminal 30)

Group 017: Readiness Code (EOBD)

00000000 CARB Mode 01 DATA A

00000110 CARB Mode 01 DATA B

10000000 CARB Mode 01 DATA C

00000000 CARB Mode 01 DATA D

Group 018: Injector Status

0.0 Injector Status Cylinder 1

0.0 Injector Status Cylinder 2

0.0 Injector Status Cylinder 3

0.0 Injector Status Cylinder 4

Group 020: Injection Quantity Limitation (from ABS)

819 /min Engine Speed (G28)

39.0 Nm Engine Torque

1270.0 Nm ASR Limitation

-1280.0 Nm MSR Limitation

Group 021: CAN-Databus Status (Powertrain)

00000000 Engine Electronics

Transmission Electronics

00000000 Brake Electronics

00000100 Brake Electronics (ESP)

Group 022: Shut-Off Status

0.0 Shut-Off Status Cruise Control

0.0 Switch Monitoring Cruise Control

0.0 Shut-Off Status Charge Pressure

0.0 Shut-Off Status Climate Control

Group 023: Injector Switch Time Deviation

-19.0 Switch Time Deviat. Cylinder 1

-24.0 Switch Time Deviat. Cylinder 2

-11.0 Switch Time Deviat. Cylinder 3

-11.0 Switch Time Deviat. Cylinder 4

Group 025

840 /min Engine Speed (G28)

4.0 (no units)

1.0 (no units)

Group 028: Accelerator Pedal Position Sensor

0.760 V Accel. Pedal Pos. Sensor 1 (G79)

0.380 V Accel. Pedal Pos. Sensor 2 (G185)

0 01 0 Operation Status

0.0 % Accel. Pedal Pos. Sensor 1 (G79)

Group 029: Temperature and Oil Level Sensor (TOG)

72.0°C Oil Temperature

30.0 mm Oil Level

9.0 Wear Index

21.0 Soot Index

Group 039

819 /min RPM

5.8 mg/str Inj. Quantity

0.00 mg/str Inj. Quantity

00000010 Bin. Bits

Group 040

819 /min RPM

5.8 mg/str Inj. Quantity

Group 041

100.6 % Duty Cycle

4.8 % Duty Cycle

101.6 % Duty Cycle

94.8 % Duty Cycle

Group 042

0.0 % Lambda

00000000 Bin. Bits

100.6 % Duty Cycle

101.6 % Duty Cycle

Group 044

819 /min RPM

440.0 mg/str Mass Air / Rev.

1 Bin. Bits

Group 045

969.0 mbar Absolute Pres.

11.38 g/s Mass Flow

1030.2 mbar Absolute Pres.

Group 046

100.6 % Duty Cycle

0.0 % Duty Cycle

99.8 % Duty Cycle

95.9 % Duty Cycle

Group 047

0.0 % Lambda

95.9 % Duty Cycle

99.8 % Duty Cycle

Group 050

819 /min RPM

5.8 mg/str Inj. Quantity

0.00 mg/str Inj. Quantity

00000010 Bin. Bits

Group 051: Engine Speed Recognition

819 /min Engine Speed

399 /min Camshaft Speed

48.0 Start Synchronisation

01010000 Shut-Off Status Injection Sequence

Group 055

0.0 (no units)

00100000 Bin. Bits

Group 056

00100000 Bin. Bits

0xFF00 Hex Value

Group 062: Engine Cooling (Temperatures)

80.1°C Coolant Temperat. Engine Output

34.2°C Coolant Temperat. Cooler Output

18.0°C Ambient Temperature

40.5°C Intake Air Temperature

Group 063: Engine Cooling (Climate Control)

7.16 bar Refrigerant Pressure

0.0 Nm Load Torque

Cooling Request

0.0 Shut-Off Status Climate Control

Group 064: Engine Cooling

80.1°C Coolant Temperature (G62)

34.2°C Coolant Temperat. Cooler Output

10.1 % Coolant Fan 1 Duty Cycle

Group 082: Advanced Control Module Identification III

0000000000000 <> 78 01JJ 79 <>

Group 086: EOBD

11010000 Bin. Bits

11111110 Bin. Bits

10011111 Bin. Bits

11111111 Bin. Bits

Group 087: EOBD

11111111 Bin. Bits

11001111 Bin. Bits

Group 089

00000000 Bin. Bits

00000110 Bin. Bits

10000000 Bin. Bits

00000000 Bin. Bits

Group 090: EOBD/OBD-2 Exhaust Gas Recirculation (EGR) I

819 /min Engine Speed (G28)

5.8 mg/str Injection Quantity

240.0 mg/str Exhaust Gas Recirculat. (spec.)

00000000 Status Control Deviation

Group 091

323.85 (no units)

-326.40 (no units)

240.0 mg/str Mass Air / Rev.

-201.45 (no units)

Group 093

00000000 Bin. Bits

0.93 (no units)

11.38 g/s Mass Flow