AA80F Automatic Transmission
AA80F AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMISSION SYSTEM: P2714: Pressure Control Solenoid "D" Performance (Shift Solenoid Valve SLT)
P2714 - Pressure Control Solenoid "D" Performance (Shift Solenoid Valve SLT)
DESCRIPTION
Based on signals from the accelerator position sensor and speed sensors (NC3, SP2 and NT), the TCM controls the solenoid valve (SLT) using a predetermined the current. As a result, the line pressure is adjusted to a pressure that is appropriate for the throttle angle and engine output. Based on the rotation speed indicated by the transmission speed sensors (NT, NC3 and SP2), the TCM calculates the heat level of the friction material, and detects the slip condition of the clutch, etc.
MONITOR DESCRIPTION
The TCM calculates the amount of heat absorbed by the friction material based on the difference in revolution (clutch slippage) between the turbine and output shaft. The TCM illuminates the MIL and stores this DTC when the amount of heat absorption exceeds the specified value.
When shift solenoid valve SLT remains on, oil pressure goes down and clutch engagement force decreases.
NOTICE:
If you continue driving under these conditions, the clutch will burn out and the vehicle will no longer be drivable.
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
ALL
ON malfunction (A)
ON malfunction (B)
ON malfunction (C)
ON malfunction (D)
ON malfunction (E)
ON malfunction (F)
TYPICAL MALFUNCTION THRESHOLDS
When one of the following conditions is met: ON malfunction (A), (B), (C), (D), (E), (F), (G), (H), (I), (J), (K) or (L)
ON malfunction (A)
ON malfunction (B)
ON malfunction (C)
ON malfunction (D)
ON malfunction (E)
ON malfunction (F)
ON malfunction (G)
ON malfunction (H)
ON malfunction (I)
ON malfunction (J)
ON malfunction (K)
ON malfunction (L)
INSPECTION PROCEDURE
NOTICE:
Perform the universal trip to clear permanent DTCs AA80F Automatic Transmission System.
PROCEDURE
1. CHECK DTC OUTPUT (IN ADDITION TO DTC P0746, P0771, P0776, P0796, P2714, P2808 AND P2817)
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / ECT / Trouble Codes.
(e) Read the DTCs using the Techstream.
Result:
HINT
If any other codes besides P0746, P0771, P0776, P0796, P2714, P2808 and P2817 are output, perform troubleshooting for those DTCs first.
B -- INSPECT SHIFT SOLENOID VALVE SLT
C -- GO TO DTC CHART Automatic Transmission System - AA80F
A -- Continue to next step.
2. CHECK FOR OUTPUT DTCS OTHER THAN P2714
(a) Check if DTCs other than P2714 are output.
Result:
B -- GO TO DTC P0776 FLOWCHART AA80F Automatic Transmission
C -- GO TO DTC P0796 FLOWCHART AA80F Automatic Transmission
D -- GO TO DTC P2808 FLOWCHART AA80F Automatic Transmission
E -- GO TO DTC P2817 FLOWCHART AA80F Automatic Transmission
A -- GO TO DTC P0746 FLOWCHART AA80F Automatic Transmission
3. INSPECT SHIFT SOLENOID VALVE SLT
(a) Remove shift solenoid valve SLT Disassembly.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
(c) Connect the battery's positive (+) lead with a 21 W bulb to terminal 2 and the negative (-) lead to terminal 1 of the solenoid valve connector. Then check that the valve moves and makes an operating noise.
OK:
Valve moves and makes operating noise.
NG -- REPLACE SHIFT SOLENOID VALVE SLT Disassembly
OK -- Continue to next step.
4. INSPECT TRANSMISSION VALVE BODY ASSEMBLY
(a) Check the transmission valve body assembly Disassembly.
OK:
There are no foreign objects on any valve.
NG -- REPAIR OR REPLACE TRANSMISSION VALVE BODY ASSEMBLY Removal
OK -- Continue to next step.
5. INSPECT TORQUE CONVERTER ASSEMBLY
(a) Check the torque converter assembly AA80F Automatic Transmission.
OK:
The torque converter assembly operates normally.
NG -- REPLACE TORQUE CONVERTER ASSEMBLY Removal
OK -- REPAIR OR REPLACE AUTOMATIC W/TRANSFER TRANSMISSION ASSEMBLY Removal