Dtc P2810 Pressure Control Solenoid G Electrical (Shift Solenoid Valve Sl4)


DESCRIPTION

MONITOR DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT TRANSMISSION WIRE (SHIFT SOLENOID VALVE SL4)

CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM)

INSPECT SHIFT SOLENOID VALVE SL4

DTC P2810 Pressure Control Solenoid "G" Electrical (Shift Solenoid Valve SL4)


DESCRIPTION

Changing from 1st to 6th is performed by the ECM turning shift solenoid valves SL1, SL2, SL3 and SL4 on and off. If an open or short circuit occurs in any of the shift solenoid valves, the ECM controls the remaining normal shift solenoid valves to allow the vehicle to be operated (LandCruiser RM000000O8L0SXX.html)

DTC No.
DTC Detection Condition
Trouble Area
P2810
An open or short circuit (output signal duty is 0% or 100%) is detected by the ECM in the shift solenoid valve SL4 circuit while driving and shifting gears (SL4 output signal duty is more than 0% and less than 100% under normal conditions) (1 trip detection logic).
  1. Open or short in shift solenoid valve SL4 circuit
  2. Shift solenoid valve SL4
  3. ECM

MONITOR DESCRIPTION

This DTC indicates an open or short in the shift solenoid valve SL4 circuit. The ECM commands gear shifts by turning the shift solenoid valves on or off. When there is an open or short circuit in any of the shift solenoid valve circuits, the ECM detects the problem and illuminates the MIL and stores the DTC. The ECM also performs the fail-safe function and turns the other normal shift solenoid valves on or off. (In case of an open or short circuit, the ECM stops sending current to the circuit.)
While driving and shifting gears, if the ECM detects an open or short in the shift solenoid valve SL4 circuit, the ECM determines there is a malfunction (LandCruiser RM000000O8L0SXX.html).

WIRING DIAGRAM


Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Ac60F Automatic Transmission Transaxle.Automatic Transmission System (For 1Gr-Fe). Dtc P2810 Pressure Control Solenoid G Electrical (Shift Solenoid Valve Sl4)


INSPECTION PROCEDURE

NOTICE:
Perform registration and/or initialization when parts related to the automatic transmission are replaced (LandCruiser RM000000O7H0HSX.html).
HINT:
  1. The following table shows normal operation of the shift solenoid valve SL4 when the shift lever is in D:

    ECM commanded gear
    		1st
    		2nd
    		3rd
    		4th
    		5th
    		6th
    Shift solenoid valve SL4
    		OFF
    		OFF
    		ON
    		OFF
    		ON
    		OFF
  2. After the repair, clear the DTCs and perform the following procedure to check that DTCs are not output.
    1. Perform the D Position Shift Test in Road Test (LandCruiser RM000000W790SGX.html).
    2. Check for DTCs again (LandCruiser RM000000W7711KX.html).
1.INSPECT TRANSMISSION WIRE (SHIFT SOLENOID VALVE SL4)


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Ac60F Automatic Transmission Transaxle.Automatic Transmission System (For 1Gr-Fe). Dtc P2810 Pressure Control Solenoid G Electrical (Shift Solenoid Valve Sl4)

  1. Disconnect the transmission wire connector.

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    23 (SL4+) - 24 (SL4-)
    		20°C (68°F)
    		5.0 to 5.6 Ω
    23 (SL4+) - Body ground
    		Always
    		10 kΩ or higher
    24 (SL4-) - Body ground
    		Always
    		10 kΩ or higher
    Text in Illustration
    *a
    		Component without harness connected
    (Transmission Wire)


NG
Go to step 3
OK


2.CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM)


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Ac60F Automatic Transmission Transaxle.Automatic Transmission System (For 1Gr-Fe). Dtc P2810 Pressure Control Solenoid G Electrical (Shift Solenoid Valve Sl4)

  1. Disconnect the ECM connector.

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    C152-9 (SL4+) - C152-8 (SL4-)
    		20°C (68°F)
    		5.0 to 5.6 Ω
    C152-9 (SL4+) - Body ground
    		Always
    		10 kΩ or higher
    C152-8 (SL4-) - Body ground
    		Always
    		10 kΩ or higher
    Text in Illustration
    *a
    		Rear view of wire harness connector
    (to ECM)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE ECM (LandCruiser RM0000013Z002DX.html)

3.INSPECT SHIFT SOLENOID VALVE SL4


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Ac60F Automatic Transmission Transaxle.Automatic Transmission System (For 1Gr-Fe). Dtc P2810 Pressure Control Solenoid G Electrical (Shift Solenoid Valve Sl4)

  1. Remove shift solenoid valve SL4 (LandCruiser RM000000O9L07IX.html).

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    1 - 2
    		20°C (68°F)
    		5.0 to 5.6 Ω

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

    OK:
    Measurement Condition
    		Specified Condition
    1. Battery positive (+) with a 21 W bulb → Terminal 1
    2. Battery negative (-) → Terminal 2
    		Valve moves and makes an operating noise
Text in Illustration
*1
Shift Solenoid Valve SL4


NG
REPLACE SHIFT SOLENOID VALVE SL4 (LandCruiser RM000000O9L07IX.html)
OK

REPLACE TRANSMISSION WIRE (LandCruiser RM000000ODV01OX.html)