Test 36A - Transmission Range Sensor (TRS) T42 Sense Circuit
NOTE:
Perform TEST 5A
before proceeding with this test. For connector terminal identification, see CONNECTOR IDENTIFICATION
. For wiring diagrams, see WIRING DIAGRAMS
. Perform VERIFICATION TEST VER-1A
after each repair.
CAUTION:
Always turn ignition switch to OFF position prior to disconnecting or connecting any module connector.
- Disconnect TRS connector. Turn ignition off. Use scan tool in voltmeter mode. Measure voltage at terminal No. 9 on TRS connector. If voltage is 10 volts or less, go to step 3). If voltage is more than 10 volts, go to next step.
- Disconnect starter relay. Using scan tool, monitor shift lever status. Connect and disconnect (3-5 times) jumper wire between ground and terminal No. 9 on TRS connector. If scan tool reading toggles from OPEN to CLOSED, replace TRS. If scan tool reading does not toggle from OPEN to CLOSED, go to next step.
- Turn ignition off. Disconnect Transmission Control Module (TCM) connector. On F24S and FJ22 models, inspect terminal No. 2 on TCM connector. Clean and repair as needed. On all other models, inspect terminal No. 42 on TCM connector. Clean and repair as needed.
- Use external ohmmeter. On F24S and FJ22 models, measure resistance between terminal No. 9 on TRS connector and terminal No. 2 on TCM connector. On all other models, measure resistance between terminal No. 9 on TRS connector and terminal No. 42 on TCM connector. On all models, if resistance is less than 5 ohms, replace TCM. If resistance is 5 ohms or greater, repair open T42 sense circuit.