Multi-Function Transmission Range (TR) Switch, Checking

Multi-Function Transmission Range (TR) Switch, Checking

Recommended special tools and equipment
- VAG1526 multimeter or VAG1715 multimeter
- VAG1594 connector test kit
- Wiring diagram

Test requirements
- Respective fuses in fuse box (instrument panel, right) must be OK
- Control module with indicator unit in instrument panel insert -J285- must be OK.
- Battery voltage must be at least 11.5 volts.
- All electrical consumers such as, for example, lights and rear window defroster must be switched off.
- Parking brake must be engaged or else daylight driving lights will be switched on.
- Selector lever must be in - P - position.
- Ground (GND) connections to transmission must be OK.

Function test
- Switch ignition on.
- Depress brake pedal and maintain depressed.
- Shift into all selector lever positions.
- Selector lever position must correspond to display of Control module with indicator unit in instrument panel insert -J285-.
- Switch ignition off.

If selector lever position does not correspond to display of Control module with indicator unit in instrument panel insert -J285-
- Check wires according to wiring diagram.

Checking wiring
- Connect test box to control module wiring harness. Connecting Test Box For Wiring Test







- Disconnect 10-pin harness connector (arrow -1-) to Multi-Function Transmission Range (TR) Switch -F125-.







- Check wires between test box and 10-pin connector to Transmission Control Module (TCM) for open circuit according to wiring diagram.

Terminal 1 + socket 47
Terminal 3 + socket 1
Terminal 4 + socket 2
Terminal 5 + socket 22
Terminal 7 + socket 10
Terminal 9 + socket 36
Terminal 10 + socket 21

Wire resistance: max. 1.5 ohms.

- Also check wires for short circuit to each other.

Specified value: infinity ohms.

If no malfunctions are found in wires:
- Check adjustment of Multi-Function Transmission Range (TR) Switch - F125 -.
- Check adjustment of selector lever cable.
- Erase DTC memory of Transmission Control Module (TCM). Diagnostic Mode 04 - Erase DTC Memory
- Generate readiness code. Monitors, Trips, Drive Cycles and Readiness Codes

If no malfunctions are detected in wires and adjustments of selector lever cable and Multi-Function Transmission Range (TR) Switch are OK:
- Replace Multi-Function Transmission Range (TR) Switch - F125 -.
- Erase DTC memory of Transmission Control Module (TCM). Diagnostic Mode 04 - Erase DTC Memory
- Generate readiness code. Monitors, Trips, Drive Cycles and Readiness Codes