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

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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 Diesel direct injection system control unit -J248-. This means that relay - J322- only receives ground (via the Diesel direct injection system control unit -J248-) if the control unit 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 A-)
t  Test box -V.A.G 1598/31-
Test conditions
l  Battery voltage at least 11 volts
l  Fuses in fuse holder on battery O.K.
Check for proper operation
–  Remove the bottom part of the dash panel on the driver's side → Body Work; Rep. Gr.70.
–  Switch on the 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 the ignition.
–  Connect the test box -V.A.G 1598/31 - to the wiring loom on the engine control unit → Chapter.
–  Using an adpater cable from -V.A.G 1594 A- interconnect bush 18 and 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:
–  Replace the Diesel direct injection system control unit -J248- → Chapter.
If the relay is not activated:
–  Remove the Diesel direct injection system relay -J322- from the relay base.
  S97-1373
–  Connect the handheld multimeter for voltage measurement to contact 2 and earth.
   Specified value: approx. battery voltage
If the specified value is not reached:
–  Check the wiring → Current flow diagrams, Electrical fault finding and Fitting locations.
If the specified value is reached:
–  Switch off the ignition.
  S23-0101
–  Check the following wires for interruption or short-circuit to positive:
  S23-0101
Relay carrier in left driver's footwell,
relay base 12, contact		Test box -V.A.G 1598/31 -
contact
918

–  If necessary eliminate wire interruption or short-circuit.
If the wiring is O.K.:
–  Replace the Diesel direct injection system relay -J322-.
   

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