Test TC-164A: Trans Temp Sensor No Rise After Start
NOTE:
For connector terminal identification, see CONNECTOR IDENTIFICATION . For component location and wiring diagram, see WIRING DIAGRAMS article.
NOTE:
To test Transmission Temperature (TRANS TEMP) sensor, engine and transmission temperature must be less than 85°F (29.4°C).
- Using scan tool, read DTCs. If P/N SWITCH, TRANS TEMP SENSOR VOLTAGE TOO LOW and/or TRANS TEMP SENSOR VOLTAGE TOO HIGH DTC are present, repair these DTCs before proceeding. If neither of these DTCs are present, go to next step.
- Using scan tool, read and record Engine Coolant Temperature (ECT) sensor temperature, and TRANS TEMP sensor temperature. If TRANS TEMP is within 9 degrees of ECT temperature, go to step 5) . If TRANS TEMP is not within 9 degrees of ECT temperature, go to next step.
- Start engine and let it idle in gear, with brake on. Monitor TRANS TEMP sensor. If TRANS TEMP does not increase steadily 15°F over a 10 minute period, go to step 5) . If TRANS TEMP increases steadily 15°F over a 10 minute period on AB body, perform TEST TC-164B: TRANS TEMP SENSOR NO RISE AFTER START . On all other bodies, TRANS TEMP sensor is functioning properly at this time. Go to next step.
- Inspect all related wiring and connectors. Repair wiring and connectors as necessary and perform TEST VER-2A: ROAD TEST VERIFICATION . If wiring and connectors are okay, see INACTIVE DTC CONDITION . Test is complete. Perform TEST VER-2A: ROAD TEST VERIFICATION .
- Disconnect TRANS solenoid 8-pin connector. Inspect connector and terminals for damage. Repair connector and terminals as necessary and perform TEST VER-2A: ROAD TEST VERIFICATION . If connector and terminals are okay, replace TRANS TEMP/governor pressure sensor and perform TEST VER-2A: ROAD TEST VERIFICATION .