Last Modified: 04-05-2023 |
6.11:8.1.0 |
Doc ID: RM10000000101M6 |
Model Year Start: 2017 |
Model: Sienna |
Prod Date Range: [08/2016 - 11/2017] |
Title: UA80F (AUTOMATIC TRANSMISSION / TRANSAXLE): AUTOMATIC TRANSAXLE SYSTEM: P271312,P271314; Pressure Control Solenoid "D" Circuit Short to Battery; 2017 MY Sienna [08/2016 - 11/2017] |
DTC
|
P271312
|
Pressure Control Solenoid "D" Circuit Short to Battery
|
DTC
|
P271314
|
Pressure Control Solenoid "D" Circuit Short to Ground or Open
|
DESCRIPTION
Refer to DTC P27137F.
Click here
DTC No.
|
Detection Item
|
DTC Detection Condition
|
Trouble Area
|
MIL
|
Memory
|
Note
|
P271312
|
Pressure Control Solenoid "D" Circuit Short to Battery
|
1. Diagnosis Condition 2.Malfunction Status 3. Malfunction Time 4. Other
-
Engine is running
-
Shift solenoid valve SLT circuit is short to +B
-
1 second
-
1-trip detection logic
|
-
Shift solenoid valve SLT
-
Transmission wire
-
Harness and connector
-
ECM
|
Comes on
|
DTC stored
|
SAE Code:
P2721
|
P271314
|
Pressure Control Solenoid "D" Circuit Short to Ground or Open
|
1. Diagnosis Condition 2.Malfunction Status 3. Malfunction Time 4. Other
-
Engine is running
-
Shift solenoid valve SLT circuit is open or shorted
-
1 second
-
1-trip detection logic
|
-
Shift solenoid valve SLT
-
Transmission wire
-
Harness and connector
-
ECM
|
Comes on
|
DTC stored
|
SAE Code:
P2720
|
MONITOR DESCRIPTION
When an open or short to +B and ground in the shift solenoid valve SLT circuit is detected, the ECM will determine that there is a malfunction, illuminate the MIL and store this DTC.
MONITOR STRATEGY
Related DTC
|
P2720: Shift solenoid valve SLT/Range check (Low current)
P2721: Shift solenoid valve SLT/Range check (High current)
P2721: Shift solenoid valve SLT/Range check (High voltage)
|
Required sensors/Components
|
Shift solenoid valve SLT
|
Frequency of operation
|
Continuous
|
Duration
|
P2720: 1 sec.
P2721: 1 sec. (High current), 1.3 sec. (High voltage)
|
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
|
P2720
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
|
P2721
The monitor will run whenever the following DTCs are not present
|
None
|
Battery voltage
|
10.5 V or more
|
High current Condition
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
|
High voltage Condition
Battery voltage
|
10.5 V or more
|
Target current
|
0.2 A or more
|
Output duty cycle
|
10% or more and 90% or less
|
TYPICAL MALFUNCTION THRESHOLDS
P2720
-
Solenoid current
|
Less than 0.075 A
|
Solenoid high current cutout by solenoid driver IC
|
ON
|
P2721
-
High current
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
|
High voltage
Solenoid voltage monitor
|
No signal
|
COMPONENT OPERATING RANGE
P2720
-
Solenoid current
|
0.075 A or more
|
Solenoid high current cutout by solenoid driver IC
|
OFF
|
P2721
-
High current
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
|
High voltage
Solenoid voltage monitor
|
Signal input
|
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 ignition switch to ON and turn the Techstream on.
-
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.
-
Turn the ignition switch to ON 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: P271312 or 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
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 (SHIFT SOLENOID VALVE SLT) - 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
|
B67-67 (SLT+) - B67-37 (SLT-)
|
20°C (68°F)
|
5.0 to 5.6 Ω
|
B67-67 (SLT+) or B67-37 (SLT-) - Body ground and other terminals
|
Always
|
10 kΩ or higher
|
OK
|
|
|
(a) Replace the ECM.
Click here
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
|
B65-24 (SLT+) - B67-67 (SLT+)
|
Always
|
Below 1 Ω
|
B65-23 (SLT-) - B67-37 (SLT-)
|
Always
|
Below 1 Ω
|
B65-24 (SLT+) or B67-67 (SLT+) - Body ground and other terminals
|
Always
|
10 kΩ or higher
|
B65-23 (SLT-) or B67-37 (SLT-) - 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 SLT
|
(a) Remove the shift solenoid valve SLT.
Click here
|
|
*a
|
Component without harness connected
(Shift Solenoid Valve SLT)
|
|
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
Shift solenoid valve SLT 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.
|