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==  Audi A5 (8T) Active/Dynamic Steering == 
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== 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 ===
 
 
 
 
 
'''<u>Prerequisites:</u>'''<br>
 
* Battery Voltage = 12.0 - 14.0 V'''<br>
 
* No fault codes other than [[01087 | 01087 - Basic Setting Not Performed]]'''<br>
 
 
 
* Perform G85-Steering Angle Sensor Basic Settings found on this Ross-Tech wiki page: [[Audi A5 (8T) Steering Wheel Electronics#Basic Setting|Audi A4/A5 (8K/8T) Steering Angle Sensor (G85) Calibration]]
 
 
 
 
 
 
 
 
 
 
<span style="color:#000000; background:#FFFF00"> '''- Continue Only after successfully completing the G85 basic settings -''' </span>
 
 
 
*Leave the steering wheel in the straight ahead position during the next steps.
 
 
 
 
 
'''[Select]'''<br>
 
'''[1B-Active Steering]'''<br>
 
 
 
'''[Security Access - 16]'''<br>
 
Enter 61378, to enable the basic setting.'''<br>
 
'''[Do it!]'''<br>
 
 
 
 
 
'''[Basic Settings - 04]'''<br>
 
Group 101<br>
 
'''[Go!]'''<br>
 
'''[ON/OFF/Next]''' <br>
 
 
 
* The results should be stored after a key cycle and fault code(s) should clear.
 
 
 
 
 
'''[Done, Go Back]''' <br>
 
'''[Fault Codes - 02]'''<br>
 
Check and clear fault codes.<br>
 
'''[Close Controller, Go Back - 06]'''<br>
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
======================================================================
 
 
 
 
 
 
 
001 Upper Limit Exceeded<br>
 
002 Lower Specified Value too Low<br>
 
003 Mechanical/Hydraulic Fault<br>
 
004 No signal/communication<br>
 
005 No or Incorrect Basic Settings/Adaptation<br>
 
006 Short Circuit to positive<br>
 
007 Short to Ground<br>
 
008 Implausible Signal/Ranger or Performance<br>
 
009 Open Circuit/short to ground<br>
 
010 Open Circuit/short to positive<br>
 
011 Open Circuit<br>
 
012 Electrical fault in Circuit<br>
 
013 Check/Read DTC memory<br>
 
014 Defective<br>
 
015<br>
 
016 Signal outside of Tolerance<br>
 
 
 
<br>
 
 
 
027 Implausible Signal<br>
 
028 Short Circuit to positive<br>
 
029 Short to Ground<br>
 
030 Open Circuit<br>
 
031 Open Circuit/short to ground<br>
 
035 No Indication in Display<br>
 
036 Open Circuit<br>
 
037 Faulty<br>
 
045 Connector<br>
 
049 No Communications<br>
 
079 Checking DTC Memory<br>
 
194 Comparison not Carried Out<br>
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
__FORCETOC__
 
== 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 <br>
 
** Inspect wiring for G62 (Coolant Migration, damage, corrosion, etc)
 
 
 
* Check (if applicable) G83 - Radiator Outlet, Coolant Temperature Sender <br>
 
** 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.
 

Latest revision as of 13:16, 6 June 2024

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