Electrical Testing

Electrical Testing


NOTE:
- For testing use a Fluke 83 multimeter or equivalent.
- The specified values are valid for an ambient temperature of 70-40 °C (50-704 °F).
- If measured values deviate from specified values, determine the malfunction using the appropriate wiring diagram.
- If measured values deviate only slightly from specified values, clean the sockets and connectors of the test unit and test leads and repeat the test.
- Before replacing components, check the respective wiring and connectors. Repeat resistance tests when values are below 10 Ohms.
- To connect test units, use test box VAG 1598/20.
- The terminal numbers of the connector and the socket numbers of test box VAG 1598/20 must be uniform.


CAUTION!
In order to avoid interference with electronic components, switch to the correct test range on the multimeter before connecting the test leads.


Test requirements
- Battery Positive Voltage (B-) OK
- Fuses 3, 15 and 31 for Transmission Control Module (TCM) OK
- Fuses for components to be checked OK
- Ground (GND) connections OK
- Check battery GND strap and GND strap between body and transmission.
- Check GND connectors for TCM.

Testing

- Conduct steps recommended in DTC table only.
- Switch ignition off, remove multi-pin connector from TCM -J217- (located in right side of plenum), and connect test box VAG 1598/20 to wiring harness connector.

If measured values deviate from specified values:
- Carry out all corrective actions listed on right side of test table. Electrical Test Table