TCM Problem Inspection Procedure
- TEST TCM GROUND CIRCUIT: Measure resistance between TCM and chassis ground using the backside of TCM harness connector as TCM side check point. If the problem is found, repair it. Specification: Below 1ohms
- TEST TCM CONNECTOR: Disconnect the TCM connector and visually check the ground terminals on TCM side and harness side for bent pins or poor contact pressure. If the problem is found, repair it.
- If problem is not found in Step 1 and 2 , the TCM could be faulty. If so, make sure there were no DTC's before swapping the TCM with a new one, and then check the vehicle again. If DTC's were found, examine this first before swapping TCM.
- RE-TEST THE ORIGINAL TCM: Install the original TCM (may be broken) into a known-good vehicle and check the vehicle. If the problem occurs again, replace the original TCM with a new one. If problem does not occur, this is intermittent problem (Refer to "Intermittent Problem Inspection Procedure" in «BASIC INSPECTION PROCEDURE»(ref-609318-S10547370632014041600000) .
Inspection
- Check signal waveform of Input & output speed sensor using the GDS. Specification: Refer to " «SIGNAL WAVE FORM»(ref-609332-S18769292162014041600000) ".
Scheme 133
- Remove the valve body assembly. (Refer to " «VALVE BODY»(ref-609330-S01814204532014041600000) ")
- Disconnect the input & output speed sensor connector (A).
- Remove the input & output speed sensor (B) after removing the bolts (2ea). Tightening torque: 9.8 ~ 11.8 N.m (1.0 ~ 1.2 kgf.m, 7.2 ~ 8.7 lb-ft)
- Check signal waveform of Input & output speed sensor using the GDS. Specification: Refer to " «SIGNAL WAVE FORM»(ref-609332-S31964683592014041600000) ".
Scheme 134
- Remove the valve body assembly. (Refer to " «VALVE BODY»(ref-609330-S01814204532014041600000) ")
- Disconnect the input & output speed sensor connector (A).
- Remove the input & output speed sensor (B) after removing the bolts (2ea). Tightening torque: 9.8 ~ 11.8 N.m (1.0 ~ 1.2 kgf.m, 7.2 ~ 8.7 lb-ft)