DTC P1738:00 [FW6A-EL]
id050225578400
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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.
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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 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 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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