Toyota CH-R Service Manual: Pressure Control Solenoid "J" Performance or Stuck Off (P2820)

Toyota CH-R Service Manual / K114 Cvt / Continuously Variable Transaxle System / Pressure Control Solenoid "J" Performance or Stuck Off (P2820)

DESCRIPTION

According to current control by the ECM, the shift solenoid valve SLP controls primary pulley pressure in accordance with the requested gear ratio to perform gear ratio changes.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

P2820

Pressure Control Solenoid "J" Performance or Stuck Off

Either one of the following conditions is met (1 trip detection logic):

  • When the oil pressure sensor output is 0.333 MPa (3.4 kgf/cm2, 48 psi) or more and the target gear ratio is less than 1.0, the actual gear ratio is 2.0 or more for 2 seconds or more.
  • When the oil pressure sensor output is 0.333 MPa (3.4 kgf/cm2, 48 psi) or more and the target gear ratio is 2.0 or more, the actual gear ratio is less than 0.5 for 1.5 seconds or more.

Continuously variable transaxle assembly (Shift solenoid valve SLP)

Comes on

DTC stored
DTC Detection Condition Patterns:
 

Vehicle Condition

Pattern 1

Pattern 2

Diagnostic Condition

The oil pressure sensor output value is 0.333 MPa (3.4 kgf/cm2, 48 psi) or more and the target gear ratio is less than 1.0.

○

-

The oil pressure sensor output value is 0.333 MPa (3.4 kgf/cm2, 48 psi) or more and the target gear ratio is 2.0 or more.

-

○

Malfunction Condition

The actual gear ratio is 2.0 or more.

○

-

The actual gear ratio is less than 0.5.

-

○

Duration

2 seconds or more

1.5 seconds or more

Detection Logic

1 trip detection logic

1 trip detection logic

HINT:

This DTC is output when either of the above detection patterns is met.

MONITOR DESCRIPTION

The ECM compares the actual gear ratio with the target gear ratio. When the actual gear ratio and target gear ratio are different, the ECM detects the malfunction, illuminates the MIL and stores this DTC.

MONITOR STRATEGY

Related DTCs

P2820: Pressure Control Solenoid (Shift solenoid valve SLP)/ Functional check

Required sensors/Components

Continuously variable transaxle assembly

(Shift solenoid valve SLP)

Frequency of operation

Continuous

Duration Conditions

OFF malfunction : 1.5 seconds

ON malfunction : 2 seconds

MIL operation

1 driving cycle

Sequence of operation

None

TYPICAL MALFUNCTION THRESHOLDS

OFF malfunction:

All of the following conditions are met:

-

Target gear ratio

2 or more

Actual gear ratio

Less than 0.5
ON malfunction:

All of the following conditions are met:*1

-

Target gear ratio

Less than 1

Actual gear ratio

2 or more

HINT:

*1: It is necessary 2 judgments / drive cycle 2nd judgment ; pending fault code ON

CAUTION / NOTICE / HINT

NOTICE:

  • Perform initialization after replacing any parts related to the continuously variable transaxle system.

    Click here

  • Check that no DTCs are stored after performing initialization.

    Click here

  • Perform the universal trip to clear permanent DTCs.

    Click here

HINT:

After performing repair, clear the DTCs and perform the following procedure to check that DTCs are not output.

  1. Perform the D position test in Road Test.

    Click here

  2. Check for DTCs again.

    Click here

PROCEDURE

1.

CHECK DTC OUTPUT (IN ADDITION TO DTC P2820)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

Powertrain > Engine and ECT > Trouble Codes

(e) Read the DTCs using the Techstream.

HINT:

If any DTCs other than P2820 are output, perform troubleshooting for those DTCs first.

Result

Proceed to

Only DTC P2820 is output

A

DTC P2820 and other DTCs are output

B
B

GO TO DTC CHART

A

2.

REPLACE CONTINUOUSLY VARIABLE TRANSAXLE ASSEMBLY

(a) Replace the continuously variable transaxle assembly.

  • When Not Using the Engine Support Bridge

    Click here

  • When Using the Engine Support Bridge

    Click here

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