AA80E Automatic Transmission

AA80E AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMISSION SYSTEM: P2716: Pressure Control Solenoid "D" Electrical (Shift Solenoid Valve SLT)

DTC P2716 - Pressure Control Solenoid "D" Electrical (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 duty ratio*. 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.
HINT: *: The duty ratio is the ratio of the current on time (A) to the total of the current on and off time (A + B).
Duty Ratio (%) = A / (A + B) x 100














MONITOR DESCRIPTION

When an open or short in the shift solenoid valve SLT circuit is detected, the TCM interprets this as a fault. The TCM will turn on the MIL and store the DTC.

MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS

All





Condition (A)





Condition (B)





Condition (C)





TYPICAL MALFUNCTION THRESHOLDS

When one of the following conditions is met: Condition (A), (B) or (C)

Condition (A)





Condition (B)





Condition (C)





COMPONENT OPERATING RANGE





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK HARNESS AND TRANSMISSION WIRE (TRANSMISSION WIRE - TCM, TRANSMISSION WIRE (SHIFT SOLENOID VALVE SLT))




(a) Disconnect the E7 TCM connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:






NG -- CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - TCM)
OK -- Continue to next step.

2. REPLACE TCM
(a) Replace the TCM Removal.
NEXT -- PERFORM A/T CODE REGISTRATION
3. CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - TCM)




(a) Disconnect the E50 transmission wire connector.
(b) Disconnect the E7 TCM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

4. 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
OK -- REPAIR OR REPLACE TRANSMISSION WIRE