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Home >> Lexus >> 2022 >> LS 500h RWD >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System (W/ Advanced Park) - Diagnostic Codes (5 Of 5) & Circuit Tests (1 Of 2) >> HYBRID CONTROL SYSTEM (w/ Advanced Park) >> DTC P2807-7F: Pressure Control Solenoid "G" Actuator Stuck Off [11/2021 - 10/2023] >> Description

DTC P2807-7F: Pressure Control Solenoid "G" Actuator Stuck Off [11/2021 - 10/2023]: Description

Based on signals from the motor resolver and transmission revolution sensor (SP2), the actual gear is detected.

If the detected gear is different than the commanded gear, the hybrid vehicle control ECU assembly detects related mechanical problems in the shift solenoid valves, transmission valve body assembly and hybrid vehicle transmission assembly.

In addition, when the oil pump with motor assembly does not operate, line pressure is not generated. As a result, this DTC may be output.

In the normal condition, the output shaft speed is within the speed difference permissible range of the motor speed in accordance with the gear ratio of each gear position commanded by the hybrid vehicle control ECU assembly.

NOTE:

This DTC is output based on the mechanical gear position inside the transmission. Therefore, check the "Current Calculated Gear Position" Data List item.

HINT: 

ACTUAL GEAR WHEN A MALFUNCTION OCCURS IN SOLENOID (SL4) VALVE (WITHOUT FAIL-SAFE CONTROL):

Hybrid vehicle control ECU assembly commanded gear 1st 2nd 3rd 4th
Actual gear during SL4 stuck ON malfunction 1st N*1 3rd N*1
Actual gear during SL4 stuck OFF malfunction*2 1st 2nd 3rd 4th

*1: Neutral

*2: Vehicle does not move with shift state in reverse (R).

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate
P2807-7F Pressure Control Solenoid "G" Actuator Stuck Off Drive the vehicle with shift state in drive (D), manual (M) or reverse (R).

Either condition is met:

  • When the hybrid vehicle control ECU assembly commands the transmission to shift to 2nd or 4th, it is actually in neutral*.

    *: The difference between the expected input speed from "transmission output speed and gear ratio of each gear position" and the actual input speed (motor speed) is large.

    (2-trip detection logic)

  • When the hybrid vehicle control ECU assembly commands the transmission to shift to reverse, it is actually in neutral*.

    *: The difference between the expected input speed from "transmission output speed and gear ratio of each gear position" and the actual input speed (motor speed) is large.

    (2-trip detection logic)
  • Solenoid (SC1) valve
  • Solenoid (SC2) valve
  • Solenoid (SL1) valve
  • Solenoid (SL2) valve
  • Solenoid (SL3) valve
  • Solenoid (SL4) valve
  • Solenoid (SLT) valve
  • Transmission valve body assembly
  • Hybrid vehicle transmission assembly
  • Oil with motor pump assembly
  • Wire harness or connector
  • OIL PMP relay
  • Fusible link (OIL PMP)
 Comes on Master Warning:
Comes on
RELATED DATA LIST

DTC No. Data List
P2807-7F
  • Current Calculated Gear Position
  • Output Shaft Revolution (Transmission)
  • Motor Revolution
RELATED ACTIVE TEST

DTC No. Active Test
P2807-7F
  • Solenoid (SLT)*1
  • Solenoid (SL1)*1
  • Solenoid (SL2)*1
  • Solenoid (SL3)*1
  • Solenoid (SL4)*1
  • Solenoid (SC1)*1
  • Solenoid (SC2)*1
  • Control the Transmission Oil Pump*2

*1: When the solenoid is malfunctioning, it may not turn on and off according to commands from the Techstream.

*2: When the motor is malfunctioning, a deviation may occur between the Techstream motor speed command and the actual motor speed.

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