Volkswagen Workshop Service and Repair Manuals > Polo Mk3 > Running gear self-diagnosis for ABS | Self diagnosis, V.A.G Inspection Service | ITT Mark 30 IE self-diagnosis function | Fault finding with fault reader V.A.G 1551 or with tester VAS 5051 on ABS, ITT Mark 30 IE (flow chart)

Running gear self-diagnosis for ABS

ITT Mark 30 IE self-diagnosis function

Fault finding with fault reader V.A.G 1551 or with tester VAS 5051 on ABS, ITT Mark 30 IE (flow chart)

Start

Connect fault reader V.A.G 1551 and select 1-rapid data transfer

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⇒

Connect tester VAS 5051 and select vehicle self-diagnosis

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Compare control unit identification

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Select address word 03-Brake electronics

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Interrogate fault memory 02

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Rectify faults using fault table

No faults recognized

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Read measured value block 08

Perform final control diagnosis 03

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Replace comp.

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1. Perform test drive at more than 20 km/h

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2. Interrogate fault memory 02 again

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3. "No faults recognized" is displayed again

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A	B					C		D				E
↓	↓					↓		↓				↓
↓ ↓ ↓ ↓	↓ ↓ ↓ ↓		Perform directed entry of electrical tests					Service hydraulic/mechanical parts of brake system (=> Workshop Manual)				↓ ↓ ↓ ↓
↓	↓					↓			↓			↓
↓	⇒	⇒	⇒	⇒	⇒	↓			↓			↓
↓ ↓						↓ ↓			↓ ↓	1.	Perform all test steps of electrical check => from Page 01-265
Identification not OK.						↓ ↓			↓ ↓	2.	Service hydraulic/mechanical parts of brake system
		↓				↓			↓		(=> Workshop Manual)
Renew control unit						↓			↓			↓
			↓				↓		↓			↓
	- Connect fault reader V.A.G 1551 or tester VAS 5051 and interrogate fault memory 02 again.
	- Erase fault memory (05)
	- Perform test drive at more than 20 km/h (13 mph) and perform a ABS regulation.
	- Interrogate fault memory again after test drive. If "No fault recognized" appears on display of fault reader V.A.G 1551 or tester VAS 5051 after rectifying faults and performing test drive, the self-diagnosis is completed.

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