Transmission Speed Sensor, Checking

Special tools and workshop equipment required

Test requirements

Respective fuses in fuse box (instrument panel, right) must be OK: Refer to SYSTEM WIRING DIAGRAM
Battery voltage must be at least 11.5 volts.
Ground (GND) connections to transmission must be OK.
Selector lever must be in P position.
Ignition switched off.

Checking wiring

-- Connect test box to control module wiring harness, connect test box for wiring test.

-- Disconnect 8-pin harness connector (arrow -3-).

Fig 1: Disconnecting 10-Pin Harness Connector To Multi-Function Transmission Range (TR) Switch -F125-

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Check wires between test box and 8-pin connector to Transmission Control Module (TCM) for open circuit according to wiring diagram.

Fig 2: 8-Pin Electrical Harness Connector & Terminals

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Terminal 3 + socket 51

Terminal 4 + socket 39

Wire resistance: max. 1.5 Ω

-- Also check wires for short circuit to each other.

Specified value: ∞ Ω

If no malfunctions are found in wires:

-- Replace Sensor for transmission RPM -G182-.

-- Erase DTC memory of Transmission Control Module (TCM), Diagnostic mode 4: Reset/erase diagnostic data.

-- Generate readiness code.