Jetta GL L4-1.9L DSL Turbo (ALH) (2001)
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Wiring diagram
Test requirements
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DTC "P0600 Serial Communication Link" was detected by the control module for Diesel-Direct fuel injection system, Diagnostic mode 3: Check
DTC memory. See: Testing and Inspection/Scan Tool Testing and Procedures/With Generic Scan Tool/Diagnostic Mode, Selecting/Diagnostic
Mode 3: Check DTC Memory
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Ignition switched off.
Test sequence
Vehicles with 80-pin control module and manual transmission
Vehicles with 80-pin control module and autom. transmission.
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Remove air filter housing.
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Disengage connector from ABS control module and disconnect.
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Connect VAG1598/21 -1- test box to ABS control module wiring harness -2-.
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Check the terminal resistance in control module for Diesel-Direct fuel injection system.
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To do this, measure resistance between test box sockets 10 +11:
Specified value: 115...135 Ohm
If resistance value is not in specified range:
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Replace Diesel Direct Fuel Injection (DFI) Engine Control Module (ECM) -J248-
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Generate readiness code. See: Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
If resistance value is in specified range:
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Check CAN data bus wires for short circuit to each other.
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Remove wiper arms and wind cowl.
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Disengage connectors from control module for Diesel-Direct fuel injection system and disconnect the connectors.
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Measure resistance anew between test box sockets 10 +11:
Specified value: Infinite Ohm
If specified value is obtained (wires have no short circuit to each other):
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Eliminate error in wires according to wiring diagram.
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Erase DTC memory of control module for Diesel- Direct fuel injection system, Diagnostic mode 4: Reset/erase diagnostic data. See: Testing and
Inspection/Scan Tool Testing and Procedures/With Generic Scan Tool/Diagnostic Mode, Selecting/Diagnostic Mode 4: Reset/Erase Diagnostic
Data
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Generate readiness code. See: Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes