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Home >> Lexus >> 2017 >> IS 300 F Sport >> Repair and Diagnosis >> External Pages >> Different car >> Section 131 (Automatic Transmission System (Aa81E, For 8AR-FTS) - Diagnostic Codes (4 Of 4) & Circuit Tests) >> AUTOMATIC TRANSMISSION SYSTEM (for 8AR-FTS) >> DTC P2807-7F: Pressure Control Solenoid "G" Actuator Stuck Off [08/2015 - 10/2016] >> Description

DTC P2807-7F: Pressure Control Solenoid "G" Actuator Stuck Off [08/2015 - 10/2016]: Description

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Based on signals from the transmission revolution sensors (NT, SP2 and NC3), the actual gear is detected.

If the detected gear is different than the commanded gear, the ECM detects related mechanical problems in the shift solenoid valves, transmission valve body assembly and automatic transmission assembly (clutch, brake, gear, etc.).

HINT: 

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

ECM commanded gear 1st 2nd 3rd 4th 5th 6th 7th 8th
Actual gear during SL4 stuck ON malfunction 4th 4th 4th 4th 5th 6th 6th 6th
Actual gear during SL4 stuck OFF malfunction 1st 2nd 3rd N (1st)* 5th N* 7th 8th

*: Neutral

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P2807-7F Pressure Control Solenoid "G" Actuator Stuck Off 1. Diagnosis Condition, 2. Malfunction Status, 3. Malfunction Time, 4. Other
SL4 stuck ON malfunction: 
  1. Engine coolant temperature is 40°C (104°F) or more, ATF temperature is -10°C (14°F) or more, and the vehicle is driven with the shift lever in D (no malfunctions are detected in solenoid (SL1, SL2, SL3, SL4, SL5, SC1 and SC2) valves, transmission revolution sensors (NT, NC3, SP2), water temperature sensor, oil temperature sensor, knock control sensor, electronic throttle, or CAN2)
  2. One of the following occurs:
    1. When the ECM commands the transmission to shift to 1st, 2nd or 3rd, the actual gear changes to 4th gear.
    2. When the ECM commands the transmission to shift to 7th or 8th, the actual gear changes to 6th gear.
  3. Malfunction status continues for 0.6 seconds or more
  4. 2-trip detection logic

SL4 stuck OFF malfunction: 
  1. Engine coolant temperature is 40°C (104°F) or more, ATF temperature is -10°C (14°F) or more, and the vehicle is driven with the shift lever in D (no malfunctions are detected in solenoid (SL1, SL2, SL3, SL4, SL5, SC1 and SC2) valves, transmission revolution sensors (NT, NC3, SP2), water temperature sensor, oil temperature sensor, knock control sensor, electronic throttle, or CAN2)
  2. When the ECM commands the transmission to shift to 4th or 6th, the engine overruns (neutral status).
  3. Malfunction status continues for 0.5 seconds or more
  4. 2-trip detection logic
  • Solenoid (SC1) valve
  • Solenoid (SC2) valve
  • Solenoid (SL1) valve
  • Solenoid (SL2) valve
  • Solenoid (SL3) valve
  • Solenoid (SL4) valve
  • Solenoid (SL5) valve
  • Transmission valve body assembly
  • Torque converter assembly
  • Automatic transmission assembly (clutch, brake, gear, etc.)
 Comes on DTC stored SAE Code:
P2808
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