P2716

AB60F 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





The linear solenoid valve (SLT) controls the transmission line pressure for smooth transmission operation based on signals from the throttle position sensor and vehicle speed sensor. The ECM adjusts the duty ratio* of the SLT solenoid valve to control the hydraulic line pressure coming from the primary regulator valve. Appropriate line pressure assures smooth shifting with varying engine outputs.

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





Reference: Inspect using an oscilloscope.
Check the waveform of the ECM connector.
Standard:









MONITOR DESCRIPTION

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

MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS

All





Condition (A)





Condition (B)





TYPICAL MALFUNCTION THRESHOLDS

When either condition below is met: Condition (A) or (B)

Condition (A)





Condition (B)





COMPONENT OPERATING RANGE





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT NO. 1 TRANSMISSION WIRE (SHIFT SOLENOID VALVE SLT)





(a) Disconnect the D63 No. 1 transmission wire connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:





NG -- INSPECT SHIFT SOLENOID VALVE SLT
OK -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (NO. 1 TRANSMISSION WIRE - ECM)





(a) Disconnect the D74 ECM connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE ECM
3. INSPECT SHIFT SOLENOID VALVE SLT
(a) Remove shift solenoid valve SLT.





(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 an operating noise.
NG -- REPLACE SHIFT SOLENOID VALVE SLT
OK -- REPAIR OR REPLACE NO. 1 TRANSMISSION WIRE