Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSVOLKSWAGEN2003GOLF (1J1) L4-1.9L DSL TURBO (ALH)REPAIR AND DIAGNOSISACCESSORIES AND OPTIONAL EQUIPMENTANTITHEFT AND ALARM SYSTEMSALARM MODULETESTING AND INSPECTIONSCAN TOOL TESTING AND PROCEDURESSCAN TOOL TESTINGMEASURING VALUE BLOCKS (FUNCTION 08)
2003 Volkswagen Golf (1J1) L4-1.9L DSL Turbo (ALH)
Measuring Value Blocks (Function 08)
2003 Volkswagen Golf (1J1) L4-1.9L DSL Turbo (ALH)SECTION Measuring Value Blocks (Function 08)
Read Measuring Value Block (function 08)
Use this function to determine immobilizer system status.
- Connect VAG 1551 Scan Tool, select operating mode 1 "Rapid data transfer", switch on ignition and enter address word 17, "Instrument cluster".
- Press -Q- button to confirm input.
- Press -> button until "Select function" appears in display.
Indicated on display:
Rapid data transfer HELP
Select function XX
- Press buttons -0- and -8- to select "Read Measuring Value Block" function 08.
Indicated on display
Rapid data transfer Q
08 - Read Measuring Value Block
- Press -Q- button to confirm input.
Indicated on display
Read Measuring Value Block
Input display group number XX
Selectable display group numbers, overview
Indicated on display: (1 to 4 = display fields)
Read Measuring Value Block XXX ->
1 2 3 4
Display group Designations
022 1 = Start procedure permitted
2 = Engine Control Module (ECM) responding
3 = Key condition OK
4 = Number of adapted keys
023 1 = Variable code authorized
2 = Key (transponder) status
3 = Fixed code authorized
4 = Immobilizer status
025 1 = CAN Bus communication (with ECM)
NOTE:
- Measuring value block always indicates condition of immobilizer that was valid after ignition was switched on.
- A change in this condition due to electrical malfunctions that occurred since ignition was switched on again and the function "Read measuring value block" is called up again.
- Interpreting measured values in individual display fields.
- When printer is switched on, the actual display is printed out.
- Press -> button if measured value specification are met in all display fields.
Measuring values, interpreting
Display group 022
- Press buttons -0- once and -2- twice to enter display group number 022.
- Press -Q- button to confirm input.
- Indicated on display (example only)
Read Measuring Value Block 22 ->
1 1 1 3
Display Group 022:
Display group 023
- Press buttons -0-, -2- and -3- to enter display group number 023.
- Press -Q- button to confirm input.
- Indicated on display (example only)
Read Measuring Value Block 23 ->
1 1 1 6
Display Group 023:
Display group 025
- Press buttons -0-, -2- and -5- to enter display group number 025.
Indicated on display (example only):
Read measuring value block 25 ->
1
- Press -> button to end "Read measuring value block" function.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.