DTC P1784:00 [FW6A-EL]
id050225905200
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DTC P1784:00 |
Hi cut valve stuck off/R-3-5 cut valve stuck on |
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DETECTION CONDITION
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• Under the following conditions, hi cut valve stuck-off or R-3-5 cut valve stuck-on detected by combination of gear ratio malfunction and oil pressure switch pattern malfunction:
Diagnostic support note
• The check engine light does not illuminate.
• The automatic transaxle warning light illuminates if the TCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the TCM.
• PENDING CODE is available.
• FREEZE FRAME DATA is not available.
• The DTC is stored in the TCM memory.
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FAIL-SAFE FUNCTION
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• Inhibits malfunctioning gear.
• Limits engine torque.
• Inhibits learning control.
• Inhibits neutral idle control.
• Inhibits i-stop control.
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POSSIBLE CAUSE
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• ATF is less than specified value
• Hi cut valve malfunction
• R-3-5 cut valve malfunction
• Clutch burnt
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SYSTEM WIRING DIAGRAM
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Diagnostic procedure
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STEP |
INSPECTION |
ACTION |
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1
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VERIFY RELATED SERVICE INFORMATION AVAILABILITY
• Verify related Service Information availability.
• Is any related Service Information available?
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Yes
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Perform repair or diagnosis according to the available Service Information.
• If the vehicle is not repaired, go to the next step.
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No
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Go to the next step.
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2
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INSPECT ATF LEVEL
• Inspect the ATF level.
• Is there any malfunction?
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Yes
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Adjust the ATF level to the specification, then go to the next step.
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No
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Replace the automatic transaxle.
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3
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PERFORM STALL TEST TO VERIFY THAT DTC
• Clear the DTC using the M-MDS.
• Perform the stall test in the reverse (R) position.
• Perform the DTC inspection using the M-MDS.
• Are any DTCs present?
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Yes
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Replace the automatic transaxle.
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No
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Go to the next step.
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4
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PERFORM ON-BOARD DIAGNOSTIC TEST
• Perform the on-board diagnostic test.
• Are any DTCs present?
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Yes
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Replace the automatic transaxle.
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No
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Drive the vehicle for 10 min or more.
DTCs are displayed:
• Replace the automatic transaxle.
No DTCs are displayed:
• DTC troubleshooting completed.
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