NO.5 NO FORWARD AND NO REVERSE ENGAGEMENTS (NO VEHICLE MOVEMENT)[LA4AX-EL (CD4E)]
id0503a2807900
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5 |
No forward and no reverse engagements (no vehicle movement) |
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POSSIBLE CAUSE
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• ATF
• Improper pressure
• Internal or external linkage malfunction
• Control valve body malfunction
• Oil filter and seal component malfunction
• Oil pump malfunction
• Drive plate malfunction
• Turbine shaft to forward/coasting/direct (F/C/D) clutch cylinder malfunction
• Torque converter malfunction
• Chain and sprocket component malfunction
• Park mechanism malfunction
• Joint shafts malfunction
• Final drive and differential component malfunction
• Planetary gear sets (Differential) malfunction
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Diagnostic procedure
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STEP |
INSPECTION |
ACTION |
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1
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ATF
• Are there any problems with the following?
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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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2
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Improper pressures
• Do any of the following malfunctions exist?
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Yes
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If the pressure is low, inspect the following components: Control valve body, oil filter and seal component, oil pump
Go to step 4
If normal, proceed to the turbine shaft
Inspect the torque converter pump shaft and component
Go to step 7
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No
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Go to the next step
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3
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Internal or external shift linkages
• Do any of the following malfunctions exist?
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Yes
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Service if necessary
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No
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Go to step 10
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4
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Control valve body
• Do any of the following malfunctions exist?
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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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5
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Oil filter and seal component
• Do any of the following malfunctions exist?
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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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Oil pump
• Do any of the following malfunctions exist?
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Yes
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Service if necessary
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No
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Go to step 3
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7
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Drive plate
• Do any of the following problems exist?
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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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8
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Turbine shaft to forward/coasting/direct clutch cylinder housing
• Is the spline damaged?
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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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9
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Torque converter component
• Do any of the following malfunctions exist?
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Yes
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Service if necessary
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No
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Go to step 3
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10
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Chain and sprocket component
• Do any of the following malfunctions exist?
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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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11
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Park mechanism
• Are any of the parking pawl return springs damaged, missing, or misassembled?
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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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12
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Joint shaft
• Do any of the following malfunctions exist?
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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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13
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Final drive and differential component
• Do any of the following malfunctions exist?
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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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14
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Planetary gear sets (differential)
• Are there any malfunctions with the following?
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Yes
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Service if necessary
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No
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The problem is resolved
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15
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• Verify the test results.
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