DTC P1728:00 [EW6A-EL]

id050234905100

DTC P1728:00

Clutch slippage

DETECTION CONDITION

•  Under the following conditions, turbine/input shaft speed suddenly increases 300 rpm or more for 1,450 ms:

―  Engine is running.

―  Vehicle speed is 5 km/h {3 mph} or more.

―  There is no difference between vehicle speed signal from DSC HU/CM and output shaft speed sensor signal.

―  Not shifting

―  Selector lever position is D position.

―  Turbine/input shaft speed is 1,200 rpm or more.

―  Oil pressure switch pattern (1st—6th) is normal.

FAIL-SAFE FUNCTION

•  Inhibits malfunctioning gear.

•  Limits engine torque.

•  Maximizes the line pressure.

•  Inhibits learning control.

•  Inhibits manual mode.

•  Inhibits neutral idle control.

•  Inhibits i-stop control.

•  Inhibits AAS.

POSSIBLE CAUSE

•  ATF is less than specified value

•  Clutch slippage

SYSTEM WIRING DIAGRAM

Not applicable

DTC P1728:00	Clutch slippage
DETECTION CONDITION	• Under the following conditions, turbine/input shaft speed suddenly increases 300 rpm or more for 1,450 ms: ― Engine is running. ― Vehicle speed is 5 km/h {3 mph} or more. ― There is no difference between vehicle speed signal from DSC HU/CM and output shaft speed sensor signal. ― Not shifting ― Selector lever position is D position. ― Turbine/input shaft speed is 1,200 rpm or more. ― Oil pressure switch pattern (1st—6th) is normal.
FAIL-SAFE FUNCTION	• Inhibits malfunctioning gear. • Limits engine torque. • Maximizes the line pressure. • Inhibits learning control. • Inhibits manual mode. • Inhibits neutral idle control. • Inhibits i-stop control. • Inhibits AAS.
POSSIBLE CAUSE	• ATF is less than specified value • Clutch slippage
SYSTEM WIRING DIAGRAM	Not applicable

Diagnostic procedure

STEP	INSPECTION		ACTION
1	VERIFY RELATED SERVICE INFORMATION AVAILABILITY • Verify related Service Information availability. • Is any related Service Information available?	Yes	Perform repair or diagnosis according to the available Service Information. • If the vehicle is not repaired, go to the next step.
1		No	Go to the next step.
2	INSPECT ATF LEVEL • Inspect the ATF level. (See AUTOMATIC TRANSAXLE FLUID (ATF) INSPECTION [EW6A-EL].) • Is there any malfunction?	Yes	Adjust the ATF level to the specification, then go to the next step. (See AUTOMATIC TRANSAXLE FLUID (ATF) ADJUSTMENT [EW6A-EL].)
2		No	Replace the automatic transaxle, then go to the next step. (See AUTOMATIC TRANSAXLE REMOVAL/INSTALLATION [EW6A-EL].)
3	VERIFY DTC TROUBLESHOOTING COMPLETED • Clear the DTC using the M-MDS. (See ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [EW6A-EL].) • Perform the following procedure to ensure that the DTC has been resolved: 1. Drive the vehicle without shifting for 20 min or more under the following conditions: • Vehicle speed: 5 km/h {3 mph} or more • Selector lever position: D position • Perform the DTC inspection using the M-MDS. (See ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [EW6A-EL].) • Are any DTCs present?	Yes	ATF amount in Step 2 is correct • Go to the applicable DTC inspection. (See ON-BOARD DIAGNOSTIC SYSTEM DTC TABLE [EW6A-EL].) ATF amount adjusted in Step 2: • Replace the automatic transaxle, then drive the vehicle to check it, and if there is no problem then the DTC troubleshooting is complete. (See AUTOMATIC TRANSAXLE REMOVAL/INSTALLATION [EW6A-EL].)
3		No	DTC troubleshooting completed.