P2759
U760E AUTOMATIC TRANSAXLE: AUTOMATIC TRANSAXLE SYSTEM: P2759: Torque Converter Clutch Pressure Control Solenoid Control Circuit Electrical (Shift Solenoid Valve SLU)
P2759 - Torque Converter Clutch Pressure Control Solenoid Control Circuit Electrical (Shift Solenoid Valve SLU)
DESCRIPTION
The amount of current flow to the solenoid is controlled by the duty ratio* of the TCM output signal. The higher the duty ratio becomes, the higher the lock-up hydraulic pressure becomes during the lock-up operation.
*: Duty Ratio
The duty ratio is the ratio of the electrical current on time (A) to the total of the electrical current on and off time (A + B).
Duty Ratio (%) = (A / (A + B)) x 100
MONITOR DESCRIPTION
When an open or short in a shift solenoid valve (SLU) circuit is detected, the TCM determines there is a malfunction. The TCM will turn on the MIL and store this 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) and (B)
Condition (C)
COMPONENT OPERATING RANGE
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTICE:
Perform the universal trip to clear permanent DTCs Reading and Clearing Diagnostic Trouble Codes.
PROCEDURE
1. INSPECT TRANSMISSION WIRE (SLU)
(a) Remove the TCM from the transaxle.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Result:
B -- REPLACE TCM Removal
A -- Continue to next step.
2. INSPECT SHIFT SOLENOID VALVE SLU
(a) Remove shift solenoid valve SLU.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
(c) Connect a battery positive (+) lead with a 21 W bulb to terminal 2 and a negative (-) lead to terminal 1 of the solenoid valve connector. Then check that the valve moves and makes an operating sound.
OK:
Valve moves and makes an operating sound.
NG -- REPLACE SHIFT SOLENOID VALVE SLU Removal
OK -- REPLACE TRANSMISSION WIRE Removal