Engine Controls - VAG 1598 Adapter Harnesses

90audi03

Applies To: 4000/5000, Coupe GT, from
80/90, 100/200, V8 1984 m.y.


Subject: VAG 1598 Test box, description, connecting and applicatlons list

Number: Group:

90-02 D2


March 16, 1990


Diagnostic System

Description

The VAG 1598 test box and adaptor set was introduced in May of 1989. It consists of a main harness with test box (that universally connects to all of the adaptor harnesses) and a set of adaptor harnesses. A hardshell storage case is provided to protect the set when not in use.

The VAG 1598 is used in conjunction with several other pieces of test equipment consisting of:

^ VAG 1526 (US 1119) multimeter
^ VAG 1527A (US 1115) LED tester
^ VW 1594 adaptor wire kit

Note

New adaptor harnesses will be made available for the VAG 1598 in the future as new applications require them.

VAG 1598 advantages:
^ the fragile terminals in the control unit connector no longer risk damage from test leads and probe connections. Connections formerly made on the control unit connector are now made on the VAG 1598 test box which has large conveniently accessible terminals
^ raised, highly visible numbers on the test box eliminate any uncertainty as to connector terminal numbering
^ certain components (e.g. Hall sender) can now be checked dynamically (engine running)
^ electrically checking miniature and unusual size terminals is now made possible regardless of terminal size
^ standard sized adaptors are used to make and test all connections resulting in dependable, accurate measurements
VAG 1598 Test box, connecting

Example: CIS-E Motronic Fuel/Ignition system control unit



^ select the appropriate adaptor harness from the list (based on the connector you wish to connect to) for this example use adaptor harness VAG 1598/2 to main test box harness by joining the two rectangular connectors, then tighten via knobs on main harness connector

Note

The rectangular connector which is on every adaptor cable can only be connected one way. Examine the connector and you will see where the threaded connectors of the test box harness attach to the adaptor connector.



^ disconnect CIS-E Motronic control unit harness connector 1 from control unit
^ connect test adaptor VAG 1598/2 male connector to control unit harness connector 1

Note

In this example the wiring up to the control unit is being checked statically, making it unnecessary to connect the control unit to the adaptor harness; however, for dynamic checks you will have to make this connection.