DIAGNOSIS PROCEDURE |
STEP 1. Check the engine performance. |
Q.
Is the check result normal?
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Go to Step 2. |
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Repair the failure, and perform adjustment. |
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STEP 2. Compare with another same model vehicle. |
Q.
Is there a difference from the same model vehicle?
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Go to Step 3. |
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The procedure is complete. |
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STEP 3. Check the A/T-ECU power supply and earth. |
Q.
Is the check result satisfactory?
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Go to Step 4. |
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Repair the wiring. |
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STEP 4. Replace the A/T-ECU. |
Q.
Is the failure resolved?
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The procedure is complete. |
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Go to Step 5. |
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STEP 5. Check the A/T fluid. |
Check the A/T fluid for seizure, fouling, and foreign material. Also, check that
the fluid level is adequate. |
Q.
Is the check result normal?
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Go to Step 6. |
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Go to Step 7. |
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STEP 6. Replace the torque converter. |
Q.
Is the failure resolved?
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The procedure is complete. |
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Go to Step 7. |
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STEP 7. Remove the transmission assembly from the vehicle. |
Disassemble and check the transmission assembly to check if there is a foreign material
inside. |
Q.
Is the check result satisfactory?
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Replace the transmission assembly. |
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Replace the failure part. |
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