Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM100000000YIZI
Model Year Start: 2017 Model: Sienna Prod Date Range: [08/2016 -           ]
Title: UA80E (AUTOMATIC TRANSMISSION / TRANSAXLE): AUTOMATIC TRANSAXLE SYSTEM: P281612,P281614; Pressure Control Solenoid "H" Circuit Short to Battery; 2017 - 2020 MY Sienna [08/2016 -        ]

DTC

P281612

Pressure Control Solenoid "H" Circuit Short to Battery

DTC

P281614

Pressure Control Solenoid "H" Circuit Short to Ground or Open

DESCRIPTION

Changing gears is performed by the ECM turning the shift solenoid valves SL1, SL2, SL3, SL4, SL5 and SL6 on and off.

If an open or short occurs in any of the shift solenoid valve circuits, the ECM controls the remaining normal shift solenoid valves to allow the vehicle to be driven. If all of the shift solenoid valves are malfunctioning, only the mechanical fluid pressure circuit will function and some manual operation will be possible. If an open or short occurs in a shift solenoid valve circuit, the ECM cuts power to the malfunctioning shift solenoid valve.

HINT:

The following table shows normal operation of the shift solenoid valves SL5 when the shift lever is in D.

Shift Solenoid Valve Operation:

Gear

1st

2nd

3rd

4th

5th

6th

7th

8th

Shift Solenoid Valve SL5

OFF

ON

OFF

OFF

OFF

OFF

OFF

ON

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

Note

P281612

Pressure Control Solenoid "H" Circuit Short to Battery

1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other

  1. Driving so that gear changes occur
  2. Shift solenoid valve SL5 circuit is short to +B
  3. 1 second
  4. 1-trip detection logic
  • Shift solenoid valve SL5
  • Transmission wire
  • Harness and connector
  • ECM

Comes on

DTC stored

SAE Code:

P281E

P281614

Pressure Control Solenoid "H" Circuit Short to Ground or Open

1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other

  1. Driving so that gear changes occur
  2. Shift solenoid valve SL5 circuit is open or shorted
  3. 1 second
  4. 1-trip detection logic
  • Shift solenoid valve SL5
  • Transmission wire
  • Harness and connector
  • ECM

Comes on

DTC stored

SAE Code:

P281D

MONITOR DESCRIPTION

This DTC indicates an open or short to +B and ground in the shift solenoid valve SL5 circuit. The ECM commands gear shifts by turning the shift solenoid valves on or off. When there is an open or short to +B and ground in any shift solenoid valve circuit, the ECM detects the problem, illuminates the MIL and stores a DTC.

The ECM performs the fail-safe function and turns the other normal shift solenoid valves on or off. In the case of an open or short to +B and ground circuit, the ECM stops sending current to the open or shorted solenoid.

MONITOR STRATEGY

Related DTCs

P281D: Shift solenoid valve SL5/Range check (Low current)

P281E: Shift solenoid valve SL5/Range check (High current)

Required sensors/Components

Shift solenoid valve SL5

Frequency of operation

Continuous

Duration

P281D, P281E: 1 sec.

MIL operation

Immediate

Sequence of operation

None

TYPICAL ENABLING CONDITIONS

All

Solenoid current cut status

Not cut

Battery voltage

8 V or more

Ignition Switch

ON

Starter

OFF

P281D

The monitor will run whenever the following DTCs are not present

None

Battery voltage

10.5 V or more

Target current

0.2 A or more

P281E

The monitor will run whenever the following DTCs are not present

None

Battery voltage

10.5 V or more

Following condition is met:

Condition a. or b.

a. Battery voltage

8 V or more and less than 12.499 V

Target current

0.8 A or less

b. Battery voltage

12.5 V or more and less than 16 V

Target current

1 A or less

TYPICAL MALFUNCTION THRESHOLDS

P281D

Solenoid current

Less than 0.075 A

P281E

Solenoid current

a. or b.

a. Battery voltage

8 V or more and less than 12.499 V

Target current

More than 0.92 A

b. Battery voltage

12.5 V or more and less than 16 V

Target current

More than 1.1 A

COMPONENT OPERATING RANGE

P281D: Solenoid current

0.075 A or more

P281E: Solenoid current

a. or b.

a. Battery voltage

8 V or more and less than 12.499 V

Target current

0.92 A or less

b. Battery voltage

12.5 V or more and less than 16 V

Target current

1.1 A or less

CONFIRMATION DRIVING PATTERN

CAUTION:

When performing the confirmation driving pattern, obey all speed limits and traffic laws.

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 2017 - 2020 MY Sienna [08/2016 -        ]; UA80E (AUTOMATIC TRANSMISSION / TRANSAXLE): AUTOMATIC TRANSAXLE SYSTEM: DTC CHECK / CLEAR

  1. Connect the Techstream to the DLC3.
  2. Turn the ignition switch to ON and turn the Techstream on.
  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  4. Turn the ignition switch off and wait for 2 minutes or more.
  5. Turn the ignition switch to ON and turn the Techstream on.
  6. Start the engine.
  7. Perform the D Position Shift Test inspection in Road Test. [*1]

    Click here 2017 MY Sienna [08/2016 - 11/2017]; UA80E (AUTOMATIC TRANSMISSION / TRANSAXLE): AUTOMATIC TRANSAXLE SYSTEM: ROAD TEST 2018 - 2020 MY Sienna [11/2017 -        ]; UA80E (AUTOMATIC TRANSMISSION / TRANSAXLE): AUTOMATIC TRANSAXLE SYSTEM: ROAD TEST

    HINT:

    [*1] : Normal judgment procedure.

    The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.

  8. Stop the vehicle.
  9. Enter the following menus: Powertrain / Transmission / Utility / All Readiness.
  10. Input the DTC: P281612 or P281614.
  11. 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

CAUTION / NOTICE / HINT

NOTICE:

  • Perform the universal trip to clear permanent DTCs.

    Click here 2017 - 2020 MY Sienna [08/2016 -        ]; UA80E (AUTOMATIC TRANSMISSION / TRANSAXLE): AUTOMATIC TRANSAXLE SYSTEM: DTC CHECK / CLEAR

  • Perform registration and/or initialization when parts related to the automatic transaxle are replaced.

    Click here 2017 - 2020 MY Sienna [08/2016 -        ]; UA80E (AUTOMATIC TRANSMISSION / TRANSAXLE): AUTOMATIC TRANSAXLE SYSTEM: PRECAUTION

PROCEDURE

1.

CHECK HARNESS AND TRANSMISSION WIRE (TRANSMISSION WIRE (SHIFT SOLENOID VALVE SL5) - ECM)

(a) Disconnect the B67 ECM connector.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

B67-10 (SL5+) - B67-11 (SL5-)

20°C (68°F)

5.0 to 5.6 Ω

B67-10 (SL5+) or B67-11 (SL5-) - Body ground and other terminals

Always

10 kΩ or higher

NG

GO TO STEP 3

OK

2.

REPLACE ECM

(a) Replace the ECM.

Click here 2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE CONTROL): ECM: COMPONENTS

NEXT

PERFORM A/T CODE REGISTRATION

3.

CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM)

(a) Disconnect the B65 transmission wire connector.

(b) Disconnect the B67 ECM connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

B65-26 (SL5+) - B67-10 (SL5+)

Always

Below 1 Ω

B65-25 (SL5-) - B67-11 (SL5-)

Always

Below 1 Ω

B65-26 (SL5+) or B67-10 (SL5+) - Body ground and other terminals

Always

10 kΩ or higher

B65-25 (SL5-) or B67-11 (SL5-) - Body ground and other terminals

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (TRANSMISSION WIRE - ECM)

OK

4.

INSPECT SHIFT SOLENOID VALVE SL5

(a) Remove the shift solenoid valve SL5.

Click here 2017 - 2020 MY Sienna [08/2016 -        ]; UA80E (AUTOMATIC TRANSMISSION / TRANSAXLE): VALVE BODY ASSEMBLY: DISASSEMBLY

*a

Component without harness connected

(Shift Solenoid Valve SL5)

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

Shift solenoid valve SL5 connector terminal 1 - terminal 2

20°C (68°F)

5.0 to 5.6 Ω

(c) Connect a positive (+) lead from the battery to terminal 1 and a negative (-) lead with a 21 W bulb 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 SHIFT SOLENOID VALVE SL5