Diagnostic procedures for a VAG diagnostics
Database for coding vehicle control units Volkswagen - VAG
Software versions
VIN - Code validator
Engines / Petrol / MED 9.5.10 CAN general / Test - lambda control - Lambda-sensor downstream of catalyst 3
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Diagnostic operation
Diagnostic procedure
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Conditions:
- exhaust system - tightness of line - OK
- engine temperature > XX °C
- catalyst temperature >= XXX °C (XX - Measured values group XXX field X)
Start the engine
wait X minutes
connect with the control unit XX - engine
XX - Measured values group XXX
required values field X (Lambda-sensor upstream of catalyst X):
xxxxX = lambda control = active
xxxXx = lambda control = readiness for operation
xx?xx = heating of lambda probe(s)
required values field X (Lambda-sensor upstream of catalyst X):
xxxxX = lambda control = active
xxxXx = lambda control = readiness for operation
xx?xx = heating of lambda probe(s)
XX - Measured values group XXX
increase rpm to XXXX rpm
required values
field X - XXX (readiness for operation - YES)
engine speed = idling
XX - Measured values group XXX
X x smoothly depress brake pedal
Initiate deceleration by quickly pressing the accelerator pedal to the floor and releasing it
observe values - field X
required values
field X < X,X V - (deceleration)
XX - Basic settings group XXX
activate default settings
fully depress - brake pedal + accelerator pedal
required values
field X = X,XX - X,X V (Lambda-sensor downstream of catalyst X - voltage)
field X = BX-SX OK
release - brake pedal + accelerator pedal
if values are not achieved - field X - check component:
- field X =< X,XX V - Lambda sensor(s) - short-circuit to GND
- field X >= X,X V - Lambda sensor(s) - short-circuit to +XXV
- field X = X,X - X,XV - Lambda sensor(s) - shut-off
- exhaust system - tightness of line - OK
- engine temperature > XX °C
- catalyst temperature >= XXX °C (XX - Measured values group XXX field X)
Start the engine
wait X minutes
connect with the control unit XX - engine
XX - Measured values group XXX
required values field X (Lambda-sensor upstream of catalyst X):
xxxxX = lambda control = active
xxxXx = lambda control = readiness for operation
xx?xx = heating of lambda probe(s)
required values field X (Lambda-sensor upstream of catalyst X):
xxxxX = lambda control = active
xxxXx = lambda control = readiness for operation
xx?xx = heating of lambda probe(s)
XX - Measured values group XXX
increase rpm to XXXX rpm
required values
field X - XXX (readiness for operation - YES)
engine speed = idling
XX - Measured values group XXX
X x smoothly depress brake pedal
Initiate deceleration by quickly pressing the accelerator pedal to the floor and releasing it
observe values - field X
required values
field X < X,X V - (deceleration)
XX - Basic settings group XXX
activate default settings
fully depress - brake pedal + accelerator pedal
required values
field X = X,XX - X,X V (Lambda-sensor downstream of catalyst X - voltage)
field X = BX-SX OK
release - brake pedal + accelerator pedal
if values are not achieved - field X - check component:
- field X =< X,XX V - Lambda sensor(s) - short-circuit to GND
- field X >= X,X V - Lambda sensor(s) - short-circuit to +XXV
- field X = X,X - X,XV - Lambda sensor(s) - shut-off
You are not logged! System works in DEMO mode only now where numbers are replaced with X characters. For 49 EUR only You will get access into full system. You can pay by credit card or bank transfer. Click BUY button for purchase and You will get login to diagnostic procedures database imediatelly.