DTC P2719, P2720, P2721: Pressure Control Solenoid "D" Control Circuit Range/Performance, Pressure Control Solenoid "D" Control Circuit Low, Pressure Control Solenoid "D" Control Circuit High: Notes
Circuit description
The line pressure control solenoid ASSY (SLT) is controlled according to the duty signal which is predetermined by the transmission control computer ASSY based on signals from the accelerator position sensor and the transmission revolution sensor (SP2, NT). This adjusts line pressure to meet the throttle opening angle and engine output. The transmission control computer ASSY detects slippage of clutch, etc. based on the revolution speed of the transmission revolution sensor (SP2, NT).
| DTC No. SAE/TCCS | DTC detecting condition
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Inspection parts |
|---|---|---|
| P2719 |
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| P2720 |
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| P2721 |
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Monitor description
If open or short circuit is detected in the circuit, TCM recognizes it as a malfunction.
TCM turns on MIL and records the diagnostic codes.
MONITOR STRATEGY DESCRIPTION
| Applicable diagnostic codes | P2719: Pressure Control Solenoid "D" Control Circuit Range/Performance P2720: Pressure Control Solenoid "D" Control Circuit Low P2721: Pressure Control Solenoid "D" Control Circuit High |
| Required sensor/component | Line pressure control solenoid ASSY (SLT) |
| Operation frequency | Consecutive |
| Period | P2719: 2 count P2720: 0.1 seconds x 5 times P2721: 0.1 seconds x 5 times |
| MIL operation | Immediate |
| Operation order | None |
TYPICAL ENABLING CONDITIONS
TYPICAL ENABLING CONDITIONS DESCRIPTION
| Battery voltage | 10.2 V or more |
| Above condition is established | 2 seconds or more |
| Fail safe mode (solenoid power supply shut down) | Non-active |
| Line pressure control solenoid ASSY (SLT) (P2720, P2721) | No defect |
| Check the feedback terminal voltage. | 0.257V or less |
| Battery voltage | 10.5V or more |
| Above condition (battery voltage) is established | 0.5 seconds or more |
TYPICAL ENABLING CONDITIONS DESCRIPTION
| Battery voltage | 10.2 V or more |
| Above condition is established | 2 seconds or more |
| Fail safe mode (solenoid power supply shut down) | Non-active |
| Line pressure control solenoid ASSY (SLT) (P2719) | No defect |
TYPICAL ENABLING CONDITIONS DESCRIPTION
| Battery voltage | 10.2 V or more |
| Above condition is established | 2 seconds or more |
| Fail safe mode (solenoid power supply shut down) | Non-active |
| Line pressure control solenoid ASSY (SLT) (P2719) | No defect |
TYPICAL MALFUNCTION THRESHOLDS
TYPICAL MALFUNCTION THRESHOLDS DESCRIPTION
| Cumulative total of differences between target current and feedback current (Sum_ie) | 12 A or more |
| Sum_ie is updated every 25 milliseconds. When 1 or more conditions below are established, Sum_ie is deleted.
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TYPICAL MALFUNCTION THRESHOLDS DESCRIPTION
| Check the feedback terminal voltage. | 0.018 V or less |
| Time elapsed after recovery from battery short circuit | 1 second or more |
TYPICAL MALFUNCTION THRESHOLDS DESCRIPTION
| Check the feedback terminal voltage. | 0.257V or more |
| Time elapsed after recovery from short circuit to ground/open circuit | 1 second or more |