Volkswagen Workshop Service and Repair Manuals > Golf Mk3 > Power unit | Motronic injection and ignition system from 08.95 | Self diagnosis, V.A.G Inspection Service | Self diagnosis

Motronic injection and ignition system from 08.95

Self diagnosis

Reading-out readiness code

Special tools, testers and auxiliary items

Work sequence

‒ Connect the fault reader V.A.G 1551 (V.A.G 1552) and with ignition switched on select engine electronics control unit with the "Address word" 01.
(Connecting fault reader and selecting engine electronics control unit .)

→ Indicated on display:

Rapid data transfer HELP

Select function XX

‒ Press keys 1 and 5 for the "Readiness code" function and confirm entry with Q key.

Must appear on display when all diagnosis functions have been successfully completed:

→ Indicated on display:

Readiness code

00000000 - Test complete

‒ Press ⇒key.
‒ Press keys 0 and 6 for the "End data transfer" function and confirm input with the Q key.

→ Indicated on display:

Readiness code

01100101 - Test not complete

One of the diagnostic checks has not run through successfully:

Relevance of 8 digit number block for readiness code


The readiness code is generated only when all display zones show 0
1	2	3	4	5	6	7	8	Diagnostic function
							0	Catalyst
						0		Catalyst heating (not available)
					0			Tank venting system
				0				Secondary air system
			0					Air conditioner (currently no diagnosis)
		0						Lambda probe
	0							Lambda probe heating
0								Exhaust gas recirculation system (not available)

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