Jetta GLX V6-2.8L (AFP) (2002)
-
Connect VAG1598/31 test box to Engine Control Module (ECM) wiring harness. Engine Control Module (ECM) is not connected by this action.
Checking voltage supply terminal 30
-
Measure supply voltage between test box sockets 1 + 62 using multimeter and adapter cables from VW1594:
Specified value: at least 11.5 V
If the specified value is not obtained:
-
Check wiring connections to relay plate according to wiring diagram.
-
Check DTC memory. If necessary, repair any malfunctions and erase DTC memory.
-
Display readiness code.
If DTC memory has been erased or the Engine Control Module (ECM) was disconnected from battery (B+) voltage, the readiness code must be
generated again.
Checking voltage supply terminal 15
-
Measure supply voltage between test box sockets 2 + 3 using multimeter and auxiliary cables from VW1594.
-
Switch ignition on.
Specified value: min. 11.5 V
If the specified value is not obtained:
-
Check wiring connections to relay plate according to wiring diagram.
-
Check DTC memory. If necessary, repair any malfunctions and erase DTC memory.
-
Display readiness code.
If DTC memory has been erased or the Engine Control Module (ECM) was disconnected from permanent battery (B+) voltage, the readiness code
must be generated again.
With Generic Scan Tool
Voltage Supply For Engine Control Module (ECM), Checking
Recommended special tools and equipment
-
VAG1526 multimeter or VAG1715 multimeter
-
VAG1594 connector test kit
-
Wiring diagram
Test requirements