Electrical Testing Instructions and Requirements
TRANSMISSION ELECTRICAL TESTINGTesting Requirements:
- Battery Positive Voltage (B+) OK
- Fuses 14 (S14) and 21 (S21) OK
- Transmission Ground (GND) connections OK:
- Ground (GND) connection located on left next to relay panel
Check Ground connections for corrosion and poor contact; repair if necessary.
Check Battery Ground (GND) strap as well as Ground (GND) strap between Battery and transmission.
Testing Instructions
- Use the hand multimeter (Fluke 83, VAG 1526 or equivalent) for testing.
- Use auxiliary cables from the VAG 1594 adapter kit, and the test box as specified, for connecting test equipment.
CAUTION! To avoid damaging the electronic components, select the appropriate function and measurement range on the test equipment before connecting the test leads.
- The specified values are valid for ambient temperatures ranging from O - 40°C (32 - 104°F).
- If the measured values differ from the specified values, determine the cause by using the wiring diagrams.
- If the measured values differ only slightly from the specified values, clean the sockets and connectors of the test equipment and test leads, then repeat the test. Before replacing a particular component, test the wiring and connections and, particularly if specified values are below 10 ohms, repeat the resistance measurement.
- Transmission Control Module (TCM) -J217- Location
Up to Dec. 1992: in front of the front passenger seat, under the floor covering
From Jan. 1993: under the rear seat
- Wiring from the 38-pin TCM connector can be checked according to the wiring diagram using the VAG 1598 test box.
- Switch ignition OFF.
- Disconnect multi-pin connector from Transmission Control Module (TCM) -J217-.
- Connect VAG 1598 test box to multi-pin connector using VAG 1598/9 adapter.
Resistance Measurements:
- VAG 1598/9 adapter disconnected from Transmission Control Module (TCM)
Voltage Measurements:
- VAG 1598/9 adapter connected to Transmission Control Module (TCM)