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Check sender for coolant temperature G62 > < Testing lines and components with test box V.A.G 1598/31

Octavia Mk1

Testing Diesel direct injection system relayJ322
Testing Diesel direct injection system relay -J322 -
The power supply of the injection system occurs via the Diesel direct injection system relay -J322-. The precondition for the closing of the relay is a voltage supply via terminal 15 to the engine control unit - J248-. This means that diesel direct injection system relay -J322- only receives ground (via the engine control unit -J248-), if the engine control unit -J248- receives a voltage supply via terminal 15.
Fitting location
   
The Diesel direct injection system relay - J322- is located on the relay carrier in the driver's footwell on the left, relay base 12.
Special tools and workshop equipment required
t  Hand multimeter (e.g. -V.A.G 1526 A-)
t  Adapter cable set (e.g. -V.A.G 1594 C-)
t  Test box -V.A.G 1598/31-
Test conditions
l  Battery voltage at least 11.5 volts
l  Fuses in fuse holder on battery are O.K.
Check for proper operation
–  Remove lower part of the dash panel insert on the driver's side → Body Work; Rep. Gr.70.
–  Switch on ignition.
The diesel direct injection system relay - J322- must be activated.
  Note
The clicking of the relay is difficult to hear and can therefore best be felt.
If the relay is not activated:
Test control
–  Switch off ignition.
–  Connect test box -V.A.G 1598/31- to the wiring loom on the engine control unit → Chapter.
–  Using an adapter cable, interconnect the bush 18 and the bush 4 of the test box.
The relay must be activated.
If the relay is now activated but did not open during the functional test:
–  Replacing engine control unit -J248- → Chapter.
If the relay is not activated:
–  Remove diesel direct injection system relay - J322- from the base on the additional relay carrier.
  S97-0360
–  Connect handheld multimeter for voltage measurement between contact 2 and earth.
   Specified value: approx. battery voltage
If the specified value is not reached:
–  Testing the wiring → Current flow diagrams and Fitting locations.
If the specified value is reached:
  a24-0298
–  Check the following wire for interruption or short-circuit to earth or positive:
  a24-0298
ContactTest box - V.A.G 1598/31-
contact
918

–  If necessary eliminate wire interruption or short-circuit.
If wiring is o.k.:
–  Replacing Diesel direct injection system relay - J322-.
   

Check sender for coolant temperature G62 > < Testing lines and components with test box V.A.G 1598/31