Test requirements

"Automatic Test Sequence" carried out to establish that any malfunctions stored in Transmission Control Module (TCM) and Engine Control Module (ECM) only affect ABS/ESP.

Connect VAS5051 tester or VAG1551 scan tool and select the address word 00 (with ignition on). See VAG1551 SCAN TOOL (ST), CONNECTING AND ENTERING ADDRESS WORD .
After completing electrical testing, check and erase DTC memories of Transmission Control Module (TCM) and Engine Control Module (ECM).
- Multi-pin harness connector for ABS Control Module (w/EDL) -J104- in proper condition, with no bent, broken or corroded terminals. Replace any damaged terminals using VAS1978 wiring repair kit.
  
  Fig 1: Identifying ABS/EDL Multi-Pin Harness Connector Terminals - Bosch 5.3
  Courtesy of AUDI OF AMERICA, INC.
  
  NOTE: The instruction manual for the VAS1978 wiring harness repair kit generally forbids the repair of any lines in the ABS or related systems. This rule only pertains to the shielded lines in these systems.
- Ignition and electrical consumers switched off before beginning testing (headlights, lighting, fan, etc.).
- For steps 13 through 16, raise the vehicle until the wheels rotate freely. On vehicles with manual transmission put the gear shift lever in neutral. On vehicles with automatic transmission move the selector lever to position "N."

Special tools and equipment required:

Connecting VAG1598/20 test box and checking ESP system

Switch ignition off.
Remove ABS Control Module (w/EDL) -J104-.
See ANTILOCK BRAKE SYSTEM .
Disconnect multi-pin connector from ABS Control Module (w/EDL) -J104-.
Check multi-pin connector between harness connector and ABS Control Module (w/EDL) -J104-.
The socket designations on the VAG1598/20 test box are identical to the terminal designations on the ABS Control Module (w/EDL) -J104- and on the wiring harness connector.
Connect VAG1598/20 test box to multi-pin connector of wiring harness.

Fig 2: Identifying ABS Control Module (w/EDL) -J104- Harness Connector Terminals - Bosch 5.3 With ESP
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Fig 3: Identifying ABS Control Module J104 (W/EDL) Terminals (1 To 9) - Bosch 5.3 With ESP

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Fig 4: Identifying ABS Control Module J104 (W/EDL) Terminals (10 To 19) - Bosch 5.3 With ESP

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Fig 5: Identifying ABS Control Module J104 (W/EDL) Terminals (20 To 29) - Bosch 5.3 With ESP

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Fig 6: Identifying ABS Control Module J104 (W/EDL) Terminals (30 To 39) - Bosch 5.3 With ESP

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Fig 7: Identifying ABS Control Module J104 (W/EDL) Terminals (40 To 49) - Bosch 5.3 With ESP

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Fig 8: Identifying ABS Control Module J104 (W/EDL) Terminals (50 To 59) - Bosch 5.3 With ESP

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Fig 9: Identifying ABS Control Module J104 (W/EDL) Terminals (60 To 69) - Bosch 5.3 With ESP

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Fig 10: Identifying ABS Control Module J104 (W/EDL) Terminals (70 To 79) - Bosch 5.3 With ESP

Courtesy of AUDI OF AMERICA, INC.

Fig 11: Identifying ABS Control Module J104 (W/EDL) Terminals (80 To 88) - Bosch 5.3 With ESP

Courtesy of AUDI OF AMERICA, INC.