User:Peter

Coding

Coding for this Control Module is normally done via Software Version Management (SVM). If the old Control Module is still accessible read/copy it's Coding to the new Module.

Basic Setting

1B-Active Steering

Prerequisites:

• Battery Voltage = 12.0 - 14.0 V
  
• No fault codes other than 01087 - Basic Setting Not Performed
  

• Perform G85-Steering Angle Sensor Basic Settings found on this Ross-Tech wiki page: Audi A4/A5 (8K/8T) Steering Angle Sensor (G85) Calibration

- Continue Only after successfully completing the G85 basic settings -

• Leave the steering wheel in the straight ahead position during the next steps.

[Select]
[1B-Active Steering]

[Security Access - 16]
Enter 61378, to enable the basic setting.
[Do it!]

[Basic Settings - 04]
Group 101
[Go!]
[ON/OFF/Next]

• The results should be stored after a key cycle and fault code(s) should clear.

[Done, Go Back]
[Fault Codes - 02]
Check and clear fault codes.
[Close Controller, Go Back - 06]

==========================================================

001 Upper Limit Exceeded
002 Lower Specified Value too Low
003 Mechanical/Hydraulic Fault
004 No signal/communication
005 No or Incorrect Basic Settings/Adaptation
006 Short Circuit to positive
007 Short to Ground
008 Implausible Signal/Ranger or Performance
009 Open Circuit/short to ground
010 Open Circuit/short to positive
011 Open Circuit
012 Electrical fault in Circuit
013 Check/Read DTC memory
014 Defective
015
016 Signal outside of Tolerance

027 Implausible Signal
028 Short Circuit to positive
029 Short to Ground
030 Open Circuit
031 Open Circuit/short to ground
035 No Indication in Display
036 Open Circuit
037 Faulty
045 Connector
049 No Communications
079 Checking DTC Memory
194 Comparison not Carried Out

18613/P2181/008577 - Performance Malfunction in Cooling System

Possible Causes

• Faulty Coolant Sensor
• Faulty Coolant Thermostat
• Faulty Wiring, Connections

Note: This fault code sets when engine coolant temperature mapping falls out of expected range based on operating conditions of the engine.

• For example: Engine warms up, thermostat opens and stays open, coolant temperature drops below normal operating range. The ECM knows the coolant temperature should stay within 80.0...110.0 °C typically after warm up. Thus a drop in coolant temperature below normal operating temperature is not possible without a malfunction in cooling system.

Possible Solutions

• Check G62 - Engine Coolant Temperature Sender
  
  • Inspect wiring for G62 (Coolant Migration, damage, corrosion, etc)

• Check (if applicable) G83 - Radiator Outlet, Coolant Temperature Sender
  
  • Inspect wiring for G83 (Coolant Migration, damage, corrosion, etc)

• Check Coolant Thermostat
  • Use Graph function in VCDS, Measuring Value Blocks - MVB
  • Start Engine cold, graph Coolant Temperature Sender (G62) Typically MVB Group-001
  • Hold RPM around 1,500rpm and watch coolant temp increase in Graph until thermostat opens, indicated by a slight drop in coolant temp
  • If coolant temp drops below minimum operating temperature (80°C) or never reaches operating temperature, (verified by external thermometer) suspect failed thermostat

• Vehicles with both G62-Engine Outlet, Coolant Temperature Sensor and G83-Radiator Outlet, Coolant Temperature Sensor
  • Use Measuring Value Block group MVB-130 instead on MVB-001
  • G62 should increase in Temperature before G83 increase when engine coolant is cold
  • G83 will increase when the thermostat opens and after G62 reaches operating temperature (80°C)
  • If G62 and G83 both increase while engine warms up, suspect failed thermostat

Special Notes

• Check the stored Freeze Frame data with this fault code. Freeze Frame information will be found in the fault code description (if the module supports it) or in Generic OBD-II if the vehicle complies with those regulations.
  • Freeze Frame data stored at -40*C is generally an indication of a faulty ECT or wiring.
  • Freeze Frame data stored at +140*C is generally an indication of a faulty ECT or wiring.
  • Freeze Frame data stored with in the 68*C ~ 80*C range is an indication that the vehicle was close to, but not within, the cooling systems normal operation range. The Thermostat itself or Cooling system components may be at fault.