Using the current from the ECM, the shift solenoid valve SLU controls the B1 brake when the shift lever is in R, and controls the lock-up clutch pressure and performs lock-up and flex lock-up control when the shift lever is in D or M.
The ECM compares the engagement condition of the lock-up clutch with the lock-up schedule in the ECM memory to detect mechanical malfunctions of the shift solenoid valve SLU, transmission valve body assembly and torque converter assembly.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | DTC Output from | Priority | Note |
|---|---|---|---|---|---|---|---|
| P275600 | Torque Converter Clutch Pressure Control Solenoid Control Circuit Performance/Stuck Off | When the ECM commands lock-up ON, the difference between the engine speed (NE) and transmission revolution sensor (NT) signal is 250 rpm or more for 2 seconds or more (2-trip detection logic). | ·
Transmission valve body assembly (Shift solenoid valve SLU) ·
Continuously variable transaxle assembly ·
Torque converter assembly |
Comes on | Engine | B | SAE Code:
P2757 |
| P27567E | Torque Converter Clutch Pressure Control Solenoid Control Actuator Stuck On | When the ECM commands lock-up OFF, the difference between the engine speed (NE) and transmission revolution sensor (NT) signal is less than 25 rpm for 1 second or more (1-trip detection logic). | ·
Transmission valve body assembly (Shift solenoid valve SLU) ·
Continuously variable transaxle assembly ·
Torque converter assembly |
Comes on | Engine | B | SAE Code:
P2757 |
When performing lock-up control (ON/OFF) of the torque converter assembly, the ECM compares the transmission revolution sensor (NT) signal and engine speed (NE) signal to detect mechanical malfunctions in the shift solenoid valves SLU.
If the torque converter does not lock-up while a lock-up ON command is being sent, the ECM detects it as a mechanical malfunction of the shift solenoid valve SLU.
If the difference between the engine speed (NE) signal and transmission revolution sensor (NT) signal is outside of the threshold, the ECM detects the malfunction, illuminates the MIL and stores a DTC.
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
After repairs have been completed, clear the DTCs and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
When clearing the permanent DTCs, refer to the Clear Permanent DTC procedure.
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Drive the vehicle and confirm the lock-up on and off conditions according to Road Test. [*1]
[*1]: Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Stop the vehicle.
Enter the following menus: Powertrain / Engine / Utility / All Readiness.
Input the DTC: P275600 or P27567E.
Check the DTC judgment result.
| GTS Display | Description |
|---|---|
| NORMAL | ·
DTC judgment completed ·
System normal |
| ABNORMAL | ·
DTC judgment completed ·
System abnormal |
| INCOMPLETE | ·
DTC judgment not completed ·
Perform driving pattern after confirming DTC enabling conditions |
| N/A | ·
Unable to perform DTC judgment ·
Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit |
If the judgment result shows NORMAL, the system is normal.
If the judgment result shows ABNORMAL, the system has a malfunction.
If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.
Perform the universal trip to clear permanent DTCs.
Perform registration and/or initialization when parts related to the continuously variable transaxle system are replaced.
Check that no DTCs are stored after performing initialization.
If any DTCs other than P275600 or P27567E are output, perform troubleshooting for those DTCs first.
Read the DTCs using the GTS.
| Result | Proceed to |
|---|---|
| Only P275600 and P27567E are output | A |
| P275600 or P27567E and other DTCs are output | B |
A
B
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| Proceed to |
|---|
| NEXT |
NEXT
| Proceed to |
|---|
| NEXT |
NEXT
for Registration: Click hereDrivetrain>K121 (CVT)>CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM>REGISTRATION202304,999999,_52,_138176,_0584691,RM1000000029HF6,
for Initialization: Click hereDrivetrain>K121 (CVT)>CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM>INITIALIZATION202304,202405,_52,_138176,_0584691,RM1000000029HF7,202405,202409,_52,_138176,_0584691,RM100000002JGMX,202409,999999,_52,_138176,_0584691,RM100000002NRHB,
| Proceed to |
|---|
| NEXT |
NEXT
for Registration: Click hereDrivetrain>K121 (CVT)>CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM>REGISTRATION202304,999999,_52,_138176,_0584691,RM1000000029HF6,
for Initialization: Click hereDrivetrain>K121 (CVT)>CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM>INITIALIZATION202304,202405,_52,_138176,_0584691,RM1000000029HF7,202405,202409,_52,_138176,_0584691,RM100000002JGMX,202409,999999,_52,_138176,_0584691,RM100000002NRHB,