DTC P1738:00 [GW6A-EL]
id050228578400
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DTC P1738:00 |
Automatic transaxle internal malfunction |
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DETECTION CONDITION
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• Malfunction location cannot be determined based on 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 learning control.
• Inhibits manual mode.
• Inhibits neutral idle control.
• Inhibits i-stop control.
• Inhibits AAS.
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POSSIBLE CAUSE
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• ATF is less than specified value
• Automatic transaxle internal malfunction
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SYSTEM WIRING DIAGRAM
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Not applicable
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Diagnostic procedure
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STEP |
INSPECTION |
ACTION |
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1
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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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Go to Step 4.
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2
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PERFORM ON-BOARD DIAGNOSTIC TEST TO SPECIFY MALFUNCTIONING PART
• Perform the on-board diagnostic test.
• Are any DTCs present?
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Yes
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DTC P1738:00 is displayed:
• Replace the automatic transaxle.
DTC other than P1738:00 is displayed:
• Go to the applicable DTC inspection.
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No
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Go to the next step.
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3
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DRIVE THE VEHICLE AND VERIFY DTCs
• Stop the engine.
• Drive the vehicle for 5 min or more after the engine restarts.
• Perform the DTC inspection using the M-MDS.
• Are any DTCs present?
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Yes
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DTC P1738:00 is displayed:
• Replace the automatic transaxle.
DTC other than P1738:00 is displayed:
• Go to the applicable DTC inspection.
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No
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No DTCs are displayed:
• DTC troubleshooting completed.
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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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DTC P1738:00 is displayed:
• Replace the automatic transaxle.
DTC other than P1738:00 is displayed:
• Go to the applicable DTC inspection.
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No
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Go to the next step.
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5
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DRIVE THE VEHICLE AND VERIFY DTCs
• Stop the engine.
• Drive the vehicle for 5 min or more after the engine restarts.
• Perform the DTC inspection using the M-MDS.
• Are any DTCs present?
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Yes
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DTC P1738:00 is displayed:
• Replace the automatic transaxle.
DTC other than P1738:00 is displayed:
• Go to the applicable DTC inspection.
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No
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Replace the control valve body.
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