P2759

AB60F AUTOMATIC TRANSMISSION / TRANSAXLE: AUTOMATIC TRANSMISSION 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 ECM. During the lock-up operation, if the current increases, the lock-up hydraulic pressure increases.

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 SLU circuit is detected, the ECM determines that there is a malfunction. The ECM will illuminate the MIL and store this DTC.

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

TYPICAL MALFUNCTION THRESHOLDS

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 NO. 1 TRANSMISSION WIRE (SHIFT SOLENOID VALVE SLU)

(a) Disconnect the C39 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 SLU
OK -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (NO. 1 TRANSMISSION WIRE - ECM)

(a) Disconnect the C53 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 Removal

3. 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) Apply battery voltage (12 V) to the shift solenoid valve and check that the valve moves and makes an operating noise.

OK:

NG -- REPLACE SHIFT SOLENOID VALVE SLU Disassembly

OK -- REPAIR OR REPLACE NO. 1 TRANSMISSION WIRE Removal