Test sequence

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Connect vehicle diagnostic, testing and information system VAS5051 or VAG1551 scan tool to vehicle and select Control module for engine electronics "Address Word" 01. See VEHICLE DIAGNOSTIC, TESTING AND INFORMATION SYSTEM VAS5051 OR VAG1551, CONNECTING AND SELECTING FUNCTIONS . The ignition must be switched ON.

When indicated on display

Fig 1: VAG1551 Scan Tool Display - Readiness Code, Checking (1 Of 4)

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Press buttons -0- and -8- to select "Read Measuring Value Block" and press -Q- button to confirm input.

When indicated on display

Fig 2: VAG1551 Scan Tool Display - Readiness Code, Checking (2 Of 4)

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Press buttons "086" for "display group number 086" and press -Q- button to confirm input.

When indicated on display

Fig 3: VAG1551 Scan Tool Display - Readiness Code, Checking (3 Of 4)

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Check readiness code in display field 1
- Specified value: 0 0 0 0 0 0 0 0

DISPLAY GROUP 086: READINESS CODE

	Display fields
	1	2	3	4
Display Group 086: Readiness code
Display	0 0 0 0 0 0 0 0	X X X X X X X X	X X X X X X X X	X X X X X X X X
Indicated	Ready-Bits completed tests	Cycle-Flags Performed cycles	Cycle -Flags Performed cycles	Cycle-Flags Performed cycles
Work area	1 = not completed 0 = completed	1 = not completed 0 = completed	1 = not completed 0 = completed	1 = not completed 0 = completed
Specified value	0 0 0 0 0 0 0 0	X X X X X X X X	X X X X X X X X	X X X X X X X X
Note:	Readiness code significance below

Note for display field 1:

This display field indicates which diagnosis was checked last after the DTC memory was erased or if the control module was replaced. After erasing the DTC memory, all values that can be checked will be reset to 1, after successful testing these values will be reset to 0.

Note for display fields 2, 3 and 4:

These display fields indicate which diagnosis was checked after the last engine start. If the engine is switched off the diagnosis is set to position 1. All values that can be checked will be set to 0 after next diagnosis.

Fig 4: Notes For Display Group 086, Display Field 1 (Ready Bits)

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NOTE: The readiness code is only set if all position are displayed with "0."

Fig 5: Notes For Display Group 86, Display Field 2 (Diagnostic Status: Catalytic Converter, Evap Canister Valve And O2 Sensor Heater)

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Fig 6: Notes For Display Group 86, Display Field 3 (Diagnostic Status: HO2S Bank 1, Secondary Air Injection System)

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Fig 7: Notes For Display Group 86, Display Field 4 (Diagnostic Status: HO2S, Bank 2)

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If the specified value in display field 1:

"00000000" is obtained:

Press -->button.

Indicated on display (function selection)

Fig 8: VAG1551 Scan Tool Display - Readiness Code, Checking (4 Of 4)

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Check DTC memory. See DIAGNOSTIC TROUBLE CODE (DTC) MEMORY, CHECKING AND ERASING (No malfunction should be stored in the DTC memory).

If specified value is not reached:

Generate readiness code. See READINESS CODE, GENERATING .