Engines / Petrol / MED 17.5 CAN general / Test - knock sensor 1;2 - signal - test drive


Mark Model Control unit Diagnostic operation
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Mark
Model
Control unit
Diagnostic operation
Diagnostic procedure

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Conditions:
- knock sensor - tightening torque = XX Nm


- observe the occupation safety rules when taking a test drive with connected diagnostics tester

Start the engine - engine speed = idling

connect with the control unit XX - engine

do a test drive

Conditions:
- engine temperature > XX °C
- idling -> partial load -> full load -> deceleration
- full load = engine speed > XXXX rpm

XX - Measured values group XXX
observe values
field X = X,XV - X,XV (knock sensor X - voltage - cylinder X)
field X = X,XV - X,XV (knock sensor X - voltage - cylinder X)
field X = X,XV - X,XV (knock sensor X - voltage - cylinder X)
field X = X,XV - X,XV (knock sensor X - voltage - cylinder X)

desired condition: (field X = field X = field X = field X) ± X,XXV


XX - end of communication


upon non--achievement of condition - check component:
- knock sensor
- knock sensor - line
- knock sensor - tightening torque

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.

Volkswagen workshop manuals for diagnostics

Log-in