Engines / Petrol / MED 17.5.21 UDS general / Test: ignition coil (N70; N71; N72; N73; N292)

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Mark	Model	Control unit	Diagnostic operation

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Model

Control unit Select the desired control unit as accurately as possible. The UDS identifier EV_xyz can be found in the VCDS after connecting to the control unit and then in the Extended Identification.

Select the desired control unit as accurately as possible. The UDS identifier EV_xyz can be found in the VCDS after connecting to the control unit and then in the Extended Identification.

Diagnostic operation Select the desired diagnostic procedure.

Diagnostic procedure

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Conditions:
•         ignition = OFF
•         on-board voltage > XX
•         engine speed = X rpm

disconnect from power supply part: ignition coil

measure resistance between terminals:
X (connector - component side)
X (connector - component side)

required value = XXX - XXX Ohm

Conditions:
- ignition = ON

measure voltage between terminals:
X (connector - control unit side)
ground

required value = > XXV

measure voltage between terminals:
X (connector - control unit side)
X (connector - control unit side)

required value = > XXV

measure voltage between terminals:
X (connector - control unit side)
X (connector - control unit side)

required value = > XXV

upon non--achievement of condition - check component:
- wiring: engine control unit -> ignition coil
- engine control unit

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