"Check Trans" Check

1. CASE: It is "ON" during 2 to 3 seconds at Ignition (or when the Engine is cranked) but it is "OFF" afterwards. The indicator is working normally.

2. CASE: It is flashing and the flash is 0.2 seconds "ON" and 0.2 seconds "OFF"; when Ignition is on (Engine cranked or not). This means that there is a malfunction. Refer to "Diagnostic System Check".
On-Board Diagnostic System Check

3. CASE: The "CHECK TRANS" Indicator is flashing, all the time, and the flash is 0.4 seconds "ON" and 0.4 second "OFF".




a. This means that the Transmission Control Module (TCM) is in flashing code mode. This mode is only used for service. This mode is set when the Terminal 1 of diagnostic connector B-22 is connected to ground. To go out of this mode, see image.
b. Check if Terminal 1 of diagnostic connector B-22 is shorted to ground. (Voltage is about 0 volts when there is a short to ground instead of 5 volts).
c. Check if TCM Terminal D16 has the same problem.
d. Remove the short circuit to ground due to wiring problems.
e. If problem is solved, go to Check Trans. Indicator.
f. If problem is not solved, go to TCM MEM-CAL Replacement.
Service and Repair

4. CASE: It stays "ON" (does not go "OFF"), when Ignition is "ON".



a. This means that connection between the Lamp and the TCM is shorted to ground.
b. Verify if Instrument Panel Terminal 4 of connector 1-5 is shorted to ground.
c. Verify if the TCM Connector B-40 Terminal C10 is shorted to ground.
d. Verify that the Instrument Panel Terminal 1 of Connector 1-5 is connected to Battery.
e. If problem is solved, go to Check Trans. Indicator.
"Check Trans" Indicator
f. If problem is not solved, go to TCM MEM-CAL Replacement.
Service and Repair

5. CASE: It is stays "OFF" with the Ignition "ON" (Engine "OFF").
a. This means that connection between the Lamp and the TCM is shorted to Battery or opened.
b. Verify if Instrument Panel Terminal 4 of Connector 1-5 is shorted to Battery or open.
c. Verify if the TCM Connector B-40 Terminal C10 is shorted to Battery or open.
d. Verify that the Instrument Panel Terminal 1 of Connector 1-5 is connected to Battery. If not check the fuses and the connections (Terminal 8 of Connector H-27) voltage.
e. If problem is solved, go to Check Trans. Indicator.
Testing and Inspection
f. If problem is not solved, go to TCM MEM-CAL Replacement.
Control Module