Difference between revisions of "User:Peter"

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== 18613/P2181/008577 - Performance Malfunction in Cooling System ==
 
== 18613/P2181/008577 - Performance Malfunction in Cooling System ==
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==== Possible Causes ====
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* Faulty Coolant Sensor
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* Faulty Coolant Thermostat
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* Faulty Wiring, Connections
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** Note: This fault code sets when engine coolant temperature mapping falls out of expected range based on operating conditions of the engine.
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** For example: Engine warms up, thermostat opens and stays open and coolant temperature drops below normal operating range, the ECM knows the coolant temperature should stay within 80.0...110.0 °C typically.
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==== Possible Solutions ====
 
==== Possible Solutions ====

Revision as of 09:31, 24 October 2013


Audi A5 (8T) Active/Dynamic Steering

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:



- 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 and coolant temperature drops below normal operating range, the ECM knows the coolant temperature should stay within 80.0...110.0 °C typically.



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.