Jetta L4-1.8L Turbo (AWP) (2004)
/Page-1205002.png)
Test requirements
-
DTC "P0600 Serial Communication Link" was detected by the Engine Control Module (ECM), Diagnostic mode 3: Check DTC memory. See:
Testing and Inspection/Scan Tool Testing and Procedures/With Generic Scan Tool/Diagnostic Mode 3: Check DTC Memory
-
Ignition switched off.
Test sequence
-
Connect test box to Engine Control Module (ECM), connect test box for wiring test. During this, wiring harness to Engine Control Module (ECM)
is not connected. See: Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Scan Tool Connecting/With Generic Scan
Tool/Test Box, Connecting For Wiring Test
-
Check the central termination resistor in the Engine Control Module (ECM):
-
To do this, measure resistance between test box
socket 58 + 60:
Specified value: 60...72 Ohms
If resistance value is not in expected range:
-
Replace Motronic Engine Control Module (ECM) -J220-.
If resistance value is in expected range:
-
Disconnect test box from Engine Control Module (ECM).
-
Connect test box to control module wiring harness.
-
Check CAN data bus wires for short circuit to each other:
-
To do this, perform a resistance measurement between test box sockets 58 + 60:
Specified value: Infinite Ohms
If specified value is obtained (wires have no shorts):
-
Eliminate error in wires (see wiring diagram):
With Manufacturer's Scan Tool
Control Module Voltage Supply, Check
Special tools and equipment
-
VAG1551 scan tool or VAG1552 mobile scan tool with VAG1551/3B cable
-
VAG1598/31 test box
-
VAG1526 hand multimeter or VAG1715 multimeter
-
VAG1594 adapter set
-
Wiring diagram
Check conditions
-
The battery voltage must be at least 11.5 V.
-
All fuses must be OK.
-
Alternator OK, checking.
Test sequence
-
Connect VAG1551 scan tool (VAG1552). Start engine and select "Address word" 01 of engine control module. Engine must be running at idling
speed. (Connecting scan tool and selecting engine control module). Refer to "VAG1551 Scan Tool See: Tools and Equipment
