Electrical Testing

Electrical Testing

• For testing, use Multimeter (VAG1526A) or Vehicle Diagnosis, Measurement and Information System (VAS5051 ). The charts contain the specific measurement methods which have to be set up before the corresponding measurements.

• The specified values given are valid for an ambient temperature of 0 °C to 40 °C.

• If the values measured deviate from the specified values, determine malfunctions following the wiring diagram.

• If the values measured show only a minor deviation from the specified values, clean cavities and connectors on the test equipment and test leads, repeat test. Before replacing the components in question, check their wires and connectors. In particular, with specified values under 10 ohms, repeat the resistance measurement on the component.

• The terminal numbers of the connector and the cavity numbers on the test box (VAG1598/20) match.

CAUTION!
In order to avoid destroying electronic components, the specific measurement range on the measuring equipment must be switched on before connecting the test leads.

Test Prerequisites

• Vehicle voltage supply OK.

• Voltage supply and fuses for particular system OK.

• Ground connections for transmission OK.

- Check ground connections for corrosion and damaged connection, repair as needed.

- Check battery ground strap and ground strap between battery and transmission.

Test Procedure

- Switch ignition OFF.

- Remove Transmission Control Module (TCM) => [ Transmission Control Module ] 01V,01VA Transmission and separate multiple connector => 01V,01VA Transmission.

- Connect test box (VAG1598/20) to control module wiring harness.





- If values measured deviate from specifications, perform " Steps in event of deviations from specified value" in right-hand column of test table => [ Electrical Test Table ] Electrical Test Table.

- Perform all steps in column "Steps in the event of deviations from specified value"

- Perform only test steps recommended in Test table ("selective troubleshooting")

Multiple harness connector (88-pin connector) of Transmission Control Module (TCM) (J217) (cavities on (VAG1598/20))









* Signal is transmitted over the Engine Control Module (ECM) to the Transmission Control Module (TCM) and can only be checked in the Measured Value Block => [ Reading Measured Value Block ] Reading Measured Value Block.

Chart of Test Steps (88-pin multiple connector)

• Perform only the test steps listed by component in the DTC Chart and the Measured Value Block.