DTC P1738:00 [FW6A-EL]


id050225578400

DTC P1738:00

Automatic transaxle internal malfunction

DETECTION CONDITION
•  Malfunction location cannot be determined based on combination of gear ratio malfunction and oil pressure switch pattern malfunction.
FAIL-SAFE FUNCTION
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
POSSIBLE CAUSE
•  ATF is less than specified value
•  Automatic transaxle internal malfunction
SYSTEM WIRING DIAGRAM
Not applicable

Diagnostic procedure

STEP

INSPECTION

ACTION

1
INSPECT ATF LEVEL
•  Inspect the ATF level.
•  Is there any malfunction?
Yes
Adjust the ATF level to the specification, then go to the next step.
No
Go to Step 4.
2
PERFORM ON-BOARD DIAGNOSTIC TEST TO SPECIFY MALFUNCTIONING PART
•  Perform the on-board diagnostic test.
•  Are any DTCs present?
Yes
DTC P1738:00 is displayed:
•  Replace the automatic transaxle.
DTC other than P1738:00 is displayed:
•  Go to the applicable DTC inspection.
No
Go to the next step.
3
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?
Yes
DTC P1738:00 is displayed:
•  Replace the automatic transaxle.
DTC other than P1738:00 is displayed:
•  Go to the applicable DTC inspection.
No
No DTCs are displayed:
•  DTC troubleshooting completed.
4
PERFORM ON-BOARD DIAGNOSTIC TEST
•  Perform the on-board diagnostic test.
•  Are any DTCs present?
Yes
DTC P1738:00 is displayed:
•  Replace the automatic transaxle.
DTC other than P1738:00 is displayed:
•  Go to the applicable DTC inspection.
No
Go to the next step.
5
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?
Yes
DTC P1738:00 is displayed:
•  Replace the automatic transaxle.
DTC other than P1738:00 is displayed:
•  Go to the applicable DTC inspection.
No
Replace the control valve body.