2003 LEXUS LS430 torque

*1: circle... MIL (Malfunction Indicator Lamp) light up
*2: "O" mark means ECM memorizes the malfunction code if the ECM detects the DTC detection
condition.
This DTC may be output when the clutch, brake and gear components etc. inside the automatic
transmission are dama
ged.
DTC P0751SHIFT SOLENOID "A" PERFORMANCE (SHIFT
SOLENOID VALVE S1)
DTC P0756SHIFT SOLENOID "B" PERFORMANCE (SHIFT
SOLENOID VALVE S2)
DTC P0761SHIFT SOLENOID "C" PERFORMANCE (SHIFT
SOLENOID VALVE S3)
DTC P0766SHIFT SOLENOID "D" PERFORMANCE (SHIFT
SOLENOID VALVE S4)
DTC P0778PRESSURE CONTROL SOLENOID "B"
ELECTRICAL (SHIFT SOLENOID VALVE SL2)
DTC P07811-2 SHIFT (1-2 SHIFT VALVE)
DTC P0973, P0974SHIFT SOLENOID "A" CONTROL CIRCUIT
LOW/HIGH (SHIFT SOLENOID VALVE S1)
DTC P0976, P0977SHIFT SOLENOID "B" CONTROL CIRCUIT
LOW/HIGH (SHIFT SOLENOID VALVE S2)
DTC P0979, P0980SHIFT SOLENOID "C" CONTROL CIRCUIT
LOW/HIGH (SHIFT SOLENOID VALVE S3)
DTC P0982, P0983SHIFT SOLENOID "D" CONTROL CIRCUIT
LOW/HIGH (SHIFT SOLENOID VALVE S4)
DTC P0985, P0986SHIFT SOLENOID "E" CONTROL CIRCUIT
LOW/HIGH (SHIFT SOLENOID VALVE SR)
DTC P2714PRESSURE CONTROL SOLENOID "D"
PERFORMANCE (SHIFT SOLENOID VALVE
SLT)
DTC P2716PRESSURE CONTROL SOLENOID "D"
ELECTRICAL (SHIFT SOLENOID SLT)
DTC P2757TORQUE CONVERTER CLUTCH PRESSURE
CONTROL SOLENOID PERFORMANCE (SHIFT
SOLENOID VALVE SLU)
DTC P2759TORQUE CONVERTER CLUTCH PRESSURE
CONTROL SOLENOID CONTROL CIRCUIT
ELECTRICAL (SHIFT SOLENOID VALVE SLU)

It is not necessary to inspect the circuit when P0711 is set.
1.CHECK OTHER DTCS OUTPUT (IN ADDITION TO DTC P0711)
a. Connect the hand-held tester to the DLC3.
b. Turn the ignition switch to the ON position and push the hand-held tester main switch ON.
c. Select the item "DIAGNOSIS/ENHANCED OBD II/DTC INFO/CURRENT CODES".
d. Read the DTCs using the hand-held tester.
Result:
DTC OUTPUT RESULT TABLE
HINT:
If any other codes besides "P0711" are output, perform troubleshooting for those DTCs first.
B: GO TO RELEVANT DTC CHART (See DIAGNOSTIC TROUBLE CODE CHART
)
A: Go to next step
2.CHECK TRANSMISSION FLUID LEVEL (See ADJUSTMENT
- AUTOMATIC
TRANSMISSION FLUID )
OK:
Automatic transmission fluid level is correct.
NG: ADD FLUID
OK: REPLACE TRANSMISSION WIRE (See step 5 on REPLACEMENT
)
DTC P0717: TURBINE SPEED SENSOR CIRCUIT NO SIGNAL
CIRCUIT DESCRIPTION
This sensor detects the rotation speed of the turbine which shows the input revolution of transmission. By
comparing the input turbine speed signal (NT) with the counter gear speed sensor signal (SP2), the ECM detects
the shift timing of the gears and appropriately controls the engine torque and hydraulic pressure according to
various conditions. Thus, providin
g smooth gear shift.
Display (DTC output)Proceed to
Only "P0711" is outputA
"P0711" and other DTCsB

Fig. 100: Inspecting Shift Solenoid Valve (S1)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
NG: REPLACE SHIFT SOLENOID VALVE (S1)
OK: Go to next step
3.INSPECT TRANSMISSION VALVE BODY ASSY (See chapter 2 in PROBLEM SYMPTOMS
TABLE )
OK:
There are no foreign objects on each valve and they operate smoothly.
NG: REPAIR OR REPLACE TRANSMISSION VALVE BODY ASSY (See step 6 on
REPLACEMENT
)
OK: Go to next step
4.INSPECT TORQUE CONVERTER CLUTCH ASSY (See INSPECTION
)

OK:
The torque converter clutch operates normally.
NG: REPLACE TORQUE CONVERTER CLUTCH ASSY
OK: REPAIR OR REPLACE AUTOMATIC TRANSMISSION ASSY (See COMPONENTS
)
DTC P0756: SHIFT SOLENOID "B" PERFORMANCE (SHIFT SOLENOID VALVE S2)
SYSTEM DESCRIPTION
The ECM uses signals from the output shaft speed sensor and input speed sensor to detect the actual gear
position (1st, 2nd, 3rd, 4th, 5th or 6th gear).
Then the ECM compares the actual gear with the shift schedule in the ECM memory to detect mechanical
problems of the shift solenoid valves and valve body.
Fig. 101: DTC Reference Chart

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
HINT:
Gear positions in the event of a solenoid valve mechanical problem:

TABLE )
OK:
There are no foreign objects on each valve and they operate smoothly.
NG: REPAIR OR REPLACE TRANSMISSION VALVE BODY ASSY (See step 6 on
REPLACEMENT
)
OK: Go to next step
4.INSPECT TORQUE CONVERTER CLUTCH ASSY (See INSPECTION
)
OK:
The torque converter clutch operates normally.
NG: REPLACE TORQUE CONVERTER CLUTCH ASSY
OK: REPAIR OR REPLACE AUTOMATIC TRANSMISSION ASSY (See COMPONENTS
)
DTC P0761: SHIFT SOLENOID "C" PERFORMANCE (SHIFT SOLENOID VALVE S3)
SYSTEM DESCRIPTION
The ECM uses signals from the output shaft speed sensor and input speed sensor to detect the actual gear
position (1st, 2nd, 3rd, 4th, 5th or 6th gear).
Then the ECM compares the actual gear with the shift schedule in the ECM memory to detect mechanical
problems of the shift solenoid valves and valve body.

There are no foreign objects on each valve and they operate smoothly.
NG: REPAIR OR REPLACE TRANSMISSION VALVE BODY ASSY (See step 6 on
REPLACEMENT
)
OK: Go to next step
5.INSPECT TORQUE CONVERTER CLUTCH ASSY (See INSPECTION
)
OK:
The torque converter clutch operates normally.
NG: REPLACE TORQUE CONVERTER CLUTCH ASSY
OK: REPAIR OR REPLACE AUTOMATIC TRANSMISSION ASSY (See COMPONENTS
)
DTC P0766: SHIFT SOLENOID "D" PERFORMANCE (SHIFT SOLENOID VALVE S4)
SYSTEM DESCRIPTION
The ECM uses signals from the output shaft speed sensor and input speed sensor to detect the actual gear
position (1st, 2nd, 3rd, 4th, 5th or 6th gear).
Then the ECM compares the actual gear with the shift schedule in the ECM memory to detect mechanical
problems of the shift solenoid valves and valve body.
Fig. 112: DTC Reference Chart

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
HINT:
Gear positions in the event of a solenoid valve mechanical problem:

NG: REPLACE SHIFT SOLENOID VALVE (SL2)
OK: Go to next step
5.INSPECT TRANSMISSION VALVE BODY ASSY (See chapter 2 in PROBLEM SYMPTOMS
TABLE )
OK:
There are no foreign objects on each valve and they operate smoothly.
NG: REPAIR OR REPLACE TRANSMISSION VALVE BODY ASSY (See step 6 on
REPLACEMENT
)
OK: Go to next step
6.INSPECT TORQUE CONVERTER CLUTCH ASSY (See INSPECTION
)
OK:
The torque converter clutch operates normally.
NG: REPLACE TORQUE CONVERTER CLUTCH ASSY
OK: REPAIR OR REPLACE AUTOMATIC TRANSMISSION ASSY (See COMPONENTS
)
DTC P0778: PRESSURE CONTROL SOLENOID "B" ELECTRICAL (SHIFT SOLENOID VALVE
SL2)
CIRCUIT DESCRIPTION
Shifting from 1st to 6th is performed in combination with "ON" and "OFF" operation of the shift solenoid
valves SL1, SL2, S1, S2, S3, S4 and SR which is controlled by the ECM. If an open or short circuit occurs in
either of the shift solenoid valves, the ECM controls the remaining normal shift solenoid valve to allow the
vehicle to be operated smoothly (see FAIL
-SAFE CHART ).
Fig. 119: DTC Reference Chart

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
MONITOR DESCRIPTION

OK: Go to next step
3.INSPECT TRANSMISSION VALVE BODY ASSY (See chapter 2 in PROBLEM
SYMPTOMS TABLE )
OK:
There are no foreign objects on each valve and they operate smoothly.
NG: REPAIR OR REPLACE TRANSMISSION VALVE BODY ASSY (See step 6 on
REPLACEMENT
)
OK: Go to next step
4.INSPECT TORQUE CONVERTER CLUTCH ASSY (See INSPECTION
)
OK:
The torque converter clutch operates normally.
NG: REPLACE TORQUE CONVERTER CLUTCH ASSY
OK: REPAIR OR REPLACE AUTOMATIC TRANSMISSION ASSY (See
COMPONENTS
)
DTC P2716: PRESSURE CONTROL SOLENOID "D" ELECTRICAL (SHIFT SOLENOID SLT)
CIRCUIT DESCRIPTION
See DTC P2714 PRESSURE CONTROL SOLENOID "D" PERFORMANCE (SHIFT SOLENOID
VALVE SLT) .
Fig. 166: DTC Reference Chart

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
MONITOR DESCRIPTION
When an open or short in the linear 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