Lexus ES: Pressure Control Solenoid "D" Circuit Short to Ground or Open (P271314)
DESCRIPTION
Refer to DTC P27137F.
Click here .gif)
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory | Note |
|---|---|---|---|---|---|---|
| P271314 | Pressure Control Solenoid "D" Circuit Short to Ground or Open | While the engine is running, a short to ground or open is detected in the solenoid (SLT) valve circuit for 1 second (1-trip detection logic). |
| Comes on | DTC stored | SAE Code: P2720 |
MONITOR DESCRIPTION
When an open or short to ground in the solenoid (SLT) valve circuit is detected, the ECM will determine that there is a malfunction, illuminate the MIL and store this DTC.
MONITOR STRATEGY
| Related DTC | P2720: Solenoid (SLT) valve/Range check (Low current) |
| Required sensors/components | Solenoid (SLT) valve |
| Frequency of operation | Continuous |
| Duration | Condition (a): 1 sec. Condition (b): 1.1 sec. |
| MIL operation | Immediate |
| Sequence of operation | None |
TYPICAL ENABLING CONDITIONS
| The monitor will run whenever the following DTCs are not stored | None |
| Solenoid current cut status | Not cut |
| Engine switch | On (IG) |
| Starter | OFF |
| Battery voltage | 10.5 V or more |
| Target current (0.1 sec. or more) | 0.2 A or more |
TYPICAL MALFUNCTION THRESHOLDS
| Any of the following conditions are met | (a) or (b) |
| (a) Solenoid current | Less than 0.075 A |
| (b) Solenoid high current cutout by solenoid driver IC | ON |
COMPONENT OPERATING RANGE
| Solenoid current | 0.075 A or more |
| Solenoid high current cutout by solenoid driver IC | OFF |
CONFIRMATION DRIVING PATTERN
HINT:
- 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.
Click here
- Connect the Techstream to the DLC3.
- Turn the engine switch on (IG) and turn the Techstream on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the engine switch off and wait for 2 minutes or more.
- Turn the engine switch on (IG) and turn the Techstream on.
- Start the engine.
-
Wait for 2 seconds or more with the engine running. [*1]
HINT:
[*1] : Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
- Enter the following menus: Powertrain / Transmission / Utility / All Readiness.
- Input the DTC: P271314.
-
Check the DTC judgment result.
Techstream 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
HINT:
- 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.
WIRING DIAGRAM
Refer to DTC P271312.
Click here
CAUTION / NOTICE / HINT
NOTICE:
-
Perform the universal trip to clear permanent DTCs.
Click here
-
Perform registration and/or initialization when parts related to the automatic transaxle are replaced.
Click here
PROCEDURE
| 1. | CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE (SOLENOID (SLT) VALVE) - ECM) |
(a) Disconnect the C78 ECM connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| C78-10 (SLT+) - C78-9 (SLT-) | 20°C (68°F) | 5.0 to 5.6 Ω |
| C78-10 (SLT+) or C78-9 (SLT-) - Body ground and other terminals | Always | 10 kΩ or higher |
| NG | .gif) | GO TO STEP 3 |
|
.gif)
| 2. | REPLACE ECM |
(a) Replace the ECM.
Click here
| NEXT | | PERFORM REGISTRATION |
| 3. | CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM) |
(a) Disconnect the C30 transmission wire connector.
(b) Disconnect the C78 ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| C30-24 (SLT+) - C78-10 (SLT+) | Always | Below 1 Ω |
| C30-23 (SLT-) - C78-9 (SLT-) | Always | Below 1 Ω |
| C30-24 (SLT+) or C78-10 (SLT+) - Body ground and other terminals | Always | 10 kΩ or higher |
| C30-23 (SLT-) or C78-9 (SLT-) - Body ground and other terminals | Always | 10 kΩ or higher |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR (TRANSMISSION WIRE - ECM) |
|
| 4. | INSPECT SOLENOID (SLT) VALVE |
| (a) Remove the solenoid (SLT) valve. Click here |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| Solenoid (SLT) valve connector terminal 1 - terminal 2 | 20°C (68°F) | 5.0 to 5.6 Ω |
(c) Connect a positive (+) lead from the battery with a 21 W bulb to terminal 1 and a negative (-) lead to terminal 2 of the solenoid valve connector. Check that the valve moves and makes an operating sound.
OK:
Valve moves and makes an operating sound.
| OK | | REPAIR OR REPLACE TRANSMISSION WIRE |
| NG | | REPLACE SOLENOID (SLT) VALVE |
READ NEXT:
Torque Converter Clutch Pressure Control Solenoid Control Circuit Short to Battery (P275612)
DESCRIPTION The ECM controls the solenoid (SLU) valve using a predetermined current, and performs lock-up and flex lock-up control. *1 Spool Valve *2 Sleeve *3 Solenoid Coil - -
Torque Converter Clutch Pressure Control Solenoid Control Circuit Short to Ground or Open (P275614)
DESCRIPTION Refer to DTC P275612. Click here DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note P275614 Torque Converter Clutch Pressure Control Solenoi
Pressure Control Solenoid "G" Circuit Short to Battery (P280712)
DESCRIPTION Changing gears is performed by the ECM turning the solenoid (SL1, SL2, SL3, SL4, SL5 and SL6) valves on and off. If an open or short occurs in any of the solenoid valve circuits, the ECM c
SEE MORE:
Warning Notification Function Malfunction
PROCEDURE 1. CHECK PROBLEM SYMPTOM (WARNING NOTIFICATION FUNCTION) (a) Check the problem symptom. (1) Check the problem symptom of the warning notification function. Result Proceed to The multi-display screen does not show a warning message even though a warning light turns on or t
Inspection
INSPECTION PROCEDURE 1. INSPECT OIL PRESSURE AND TEMPERATURE SENSOR (a) Check the oil pressure and temperature sensor output voltage. (1) Apply 5 V between terminals 3 (VC) and 2 (GND). NOTICE:
Be careful when connecting the leads as the oil pressure and temperature sensor may be damaged if
