NO.13 SHIFT CONCERN: NO 1–2 SHIFT[LA4AX-EL (CD4E)]
id0503a2804100
13 |
Shift concern: no 1–2 shift |
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POSSIBLE CAUSE
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• Powertrain control system malfunction
• Improper pressure
• Control valve body malfunction
• 2/4 band and servo malfunction
• Low OWC component malfunction
• Reverse/fourth gear (REV/4GR) sun gear and shell malfunction
• Transaxle case malfunction
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Diagnostic procedure
STEP |
INSPECTION |
ACTION |
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1
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Powertrain control system
• Do any of the following malfunctions exist?
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Yes
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Perform OBD test
Perform DTC troubleshooting
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No
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Go to the next step
|
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2
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Improper pressure
• Do any of the following malfunctions exist?
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Yes
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Go to the next step
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No
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Go to step 4
|
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3
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Control valve body
• Do any of the following malfunctions exist?
|
Yes
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Service if necessary
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No
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Go to the next step
|
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4
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2/4 band and servo component
(No fourth gear engagement also)
• Do any of the following malfunctions exist?
|
Yes
|
Service if necessary
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No
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Go to the next step
|
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5
|
Low OWC component
• Is there any damage?
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Yes
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Service if necessary
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No
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Go to the next step
|
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6
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Reverse/fourth gear sun gear and shell
• Do any of the following malfunctions exist?
|
Yes
|
Service if necessary
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No
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Go to the next step
|
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7
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Transaxle case
• Do any of the following malfunctions exist?
|
Yes
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Service or replace case if necessary
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No
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The malfunction is not in the automatic transaxle
Go to the engine symptom troubleshooting
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8
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• Verify the test results.
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