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.	○	-
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 2.0 or more.	-	○
Malfunction Condition	The actual gear ratio is 2.0 or more.	○	-
Malfunction Condition	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.

Perform the D position test in Road Test.
Click here
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.

(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

GO TO DTC CHART

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

PERFORM INITIALIZATION

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