Jetta Sedan L4-1.9L DSL Turbo (BEW) (2005)
-
Disengage connector from ABS control module and disconnect.
-
Check CAN-Bus wires with termination resistor in control module for Diesel-Direct fuel injection system:
-
To do so, measure resistance again between test box sockets 3 + 25:
Specified value: 115 to 135 Ohms
If resistance value is not in specified range:
-
Check CAN-Bus wires.
If no malfunctions are found in wires:
-
Replace Diesel Direct Fuel Injection (DFI) Engine Control Module (ECM) -J248-.
-
Generate readiness code. See: Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
Checking CAN-Bus wires
-
Remove air filter housing.
-
Disengage connector from ABS control module and disconnect.
-
Disengage connector from control module for Diesel-Direct fuel injection system and disconnect the connector.
-
Check CAN data bus wires for shorts among one another:
-
To do so, measure resistance again between test box sockets 3 + 25 at V.A.G 1598/18 Adapter - 68-pin:
Specified value: Infinite Ohms
If specified value is obtained (wires have shorts):
-
Eliminate error in wires (see circuit diagram):
-
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 4: Reset/Erase Diagnostic Data
-
Generate readiness code. See: Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
If specified value is obtained (wires have no shorts):
-
Connect test box to control module wiring harness, connect test box for wiring test. See: Testing and Inspection/Reading and Clearing Diagnostic
Trouble Codes/Scan Tool Connecting/Test Box, Connecting For Wiring Test
-
Check CAN-Bus wires between test box sockets for open circuits according to wiring diagram
Socket 68 (1598/22) and
Socket 3 (1598/18)
Socket 75 (1598/22) and