3.
Confirm the "TCM Temperature sensor" parameter on the scan tool.
Fig 1) Temperature of TCU inside
TCM installed in inside Automatic transmissiom with E-module. Temperature sensor detects temperature increasing for inside of TCU and prevent from obnormal operation of TCU.
TCM set this code If output value of Temperature sensor out of normal range or not changed for long term. (MIL OFF)
Item | Detecting Condition | Possible Cause |
DTC Strategy | ● Check signal range | ● Faulty in Mechatronics (Valve-body + TCM) |
Enable Conditions | ● "IG KEY" ON | |
Threshold Value | ● Output value of Temperature sensor out of normal range ● Output value of Temperature sensor not changed for long term | |
Diagnostic Time | ● 1.5 second | |
Fail Safe | ● - ● (priority : 2) |
The function with the higher priority will aiways take precedence. However, a low-priority is not overruled by a higher priority function.
Functions from different priority categories can also run in parallel. It is important to note which function will take precedence in this case.
In such an event it is possible for a substitute function with low priority not be carried out if a second, higher-priority function is present. This has been taken into account when compiling the priority list and is international.
The mechanical emergency run function must always have the highest priority, since from the electrical standpoint it is the only safe condition.
Fig 1) Temperature of TCU inside
Connect scantool to Diagnostic Connector.
Ignition "ON" & Engine "OFF".
Confirm the "TCM Temperature sensor" parameter on the scan tool.
Fig 1) Temperature of TCU inside
Is the "TCM Temperature sensor" output value normal range ?
 | ▶ Fault is intermittent caused by poor contact in the sensor's and/or TCM(PCM)'s connector or was repaired and TCM(PCM) memory was not cleared. Throughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration or damage.Repair or replace as necessary and go to "Verification Vehicle Repair" procedure. |
 | ▶ Go to "Component inspection" procedure. |
Ignition "ON" & Engine "OFF".
Connect scantool and check DTC.
Erase the DTC with scantool.
After turning IG OFF to IG ON twice or three times, check DTC again.
Does the scantool show same DTC again ?
| ▶ Substitute with a known-good Mechatronics (Valve-body + TCM) and check for proper operation. If the problem is corrected,replace Mechatronics (Valve-body + TCM) and then go to "Verification of Vehicle Repair" procedure. |
| ▶ Fault is intermittent caused by poor contact in the sensor’s and/or PCM’s connector or was repaired and PCM memory was not cleared. Thoroughly check connectors for looseness, poor connection, ending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "Verification of Vehicle Repair" procedure. |
How to perform Initial Learning
If you replace the automatic transmission or Mechatronics (Valve-body + TCM), or if you overwrite the TCU software, be sure to initialize the learned values and perform initial learning.
Step 1) Warm-up
Raise the ATF temperature by leaving the vehicle idling or performing city drive. Check the ATF temperature using the Scan-tool and make sure it is between 50°C( 122 °F) and 120°C( 248 °F). If the ATF temperature is outside this range, work to bring the range.
Don't raise the oil temperature by stalling the engine.
(Reference)
If the oil temperature is not between 50°C( 122 °F) and 120°C ( 248 °F), initial learning can not be performed. Before learning, check for variable speed shock or shift shock.
STEP 2) Driving learning
Select "D" range then depress accelerator pedal smoothly, and keep the APS value 17%, shift gear to 5th gear.
RKeep the vehicle speed over 60kM/h.
In condition that release the accelerator pedal and then depress the brake pedal narmally.Stop the vehicle then keep 5seconds.
STEP 3) Repeat this procedure 10 times.(Not necessary N-D,N-R Learning)
After a repair, it is essential to verify that the fault has been corrected.
Connect scantool and select "Diagnostic Trouble Codes(DTCs)" mode.
Using a scan tool, Clear DTC.
Operate the vehicle within DTC Enable conditions in General information.
Are any DTCs present ?
| ▶ Go to the applicable troubleshooting procedure. |
| ▶ System performing to specification at this time. |
