New Beetle GLS L4-2.0L (AVH) (2001)
Engine Control Module: Testing and Inspection
With Manufacturer's Scan Tool
Engine Control Module (ECM) Voltage Supply Checking
Special tools and equipment
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Scan tool VAG 1551 or vehicle system tester V.A.G 1552 with cable VAG 1551/3B
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Test box V.A.G 1598/31
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Hand multimeter V.A.G 1526 or multimeter VAG 1715
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Adapter set V.A.G 1594
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Wiring diagram
Check conditions
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All Fuses must be OK
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The battery voltage must be at least 11.5 V
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Alternator OK
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All electrical consumers, e.g. lights and rear window heating must be switched off
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If the vehicle is equipped with an air conditioner, this must be switched off
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Selector lever must be in "P" or "N" position on vehicles with an automatic transmission
Test sequence
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Connect scan tool VAG 1551 (V.A.G 1552). Start engine and select "Address word" 01 of Engine Control Module (ECM). Engine must be
running at idle speed.
Connecting scan tool and selecting Engine Control Module (ECM). Refer to "Scan Tool Testing/Scan Tool Connecting and Initial
Checks/VAG1551 Scan Tool" See: Computers and Control Systems/Testing and Inspection
Indicated on display
Rapid data transfer
HELP
Select function XX
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Press buttons 0 and 8 for function "Read Measuring Value Block" and confirm entry with Q button.
Indicated on display
Read Measuring Value Block
Input display group number XXX
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Press buttons 0, 0 and 4 for "Display group number 4" and confirm entry with Q button.
Indicated on display (1-4 = Display zones)
Read Measuring Value Block 4
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4