Golf L4-1.9L DSL Turbo (ALH) (1999)
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Connect test box VAG 1598/21 -1- to wiring harness for ABS Control Module -J104 -2-.
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Check CAN-Bus wiring between test box sockets 1598/22 and 1598/21 for open circuit using wiring diagram:
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1598/22-1598/21
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Socket 68 and - socket 10
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Socket 75 and - socket 11
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Wire resistance: max. 1.5 ohms
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Also, check for shorts to battery positive (B+) or ground (GND).
If no wiring damage is found:
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Replace ABS Control Module.
If resistance is within specification:
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Remove air cleaner.
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Release ABS Control Module -J104- connector and remove.
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Check wiring between engine and ABS Control Module for short to ground and for short to positive (B+).
If no wiring damage is found:
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Reconnect Engine Control Module (ECM) -J248- connector.
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Connect test box VAG 1598/21 -1- to ABS Control Module wiring harness -2-.
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Check terminal resistor in Engine Control Module (ECM) -J248-:
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Measure resistance between test box sockets 10 + 11:
Specification: 115 to 135 ohms
If resistance is outside specification: