Transmission Fluid Temperature Sensor, Checking
Special tools and workshop equipment required
- Multimeter VAG1526 or multimeter VAG1715
- Connector test kit VAG1594
- Wiring diagram
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.
Test sequence
-- Disconnect 8-pin harness connector -arrow 3-.
Checking resistance
-- Measure resistance of Transmission Fluid Temperature Sensor -G93- - between terminals 1 + 2 at connector to sensor:
| ATF temperature | Specified value |
|---|---|
| approx. -30° C | 37.0 to 51.0 KΩ |
| approx. 10° C | 5.0 to 8.0 KΩ |
| approx. 25° C | 3.0 to 5.0 KΩ |
| approx. 110° C | 230.0 to 265.0 Ω |
| approx. 145° C | 100.0 to 120.0 Ω |
If one of the specified values is not obtained:
-- Replace Transmission Fluid Temperature Sensor -G93-.
-- Erase DTC memory of Transmission Control Module (TCM), Diagnostic mode 4: Reset/erase diagnostic data.
-- Generate readiness code.
If specified values are obtained:
-- Check wires according to wiring diagram.
Checking wiring
-- Connect test box to control module wiring harness, connect test box for wiring test.
-- Check wires between test box and 8-pin connector to Transmission Control Module (TCM) for open circuit according to wiring diagram.
Terminal 1 + socket 45
Terminal 2 + socket 8
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 Transmission Control Module (TCM) -J217- TRANSMISSION CONTROL MODULE, REPLACING .