CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM, Diagnostic DTC:P0962, P0963, P0966, P0967

DTC Code	DTC Name
P0962	Pressure Control Solenoid "A" Control Circuit Low (Shift Solenoid Valve DS1)
P0963	Pressure Control Solenoid "A" Control Circuit High (Shift Solenoid Valve DS1)
P0966	Pressure Control Solenoid "B" Control Circuit Low (Shift Solenoid Valve DS2)
P0967	Pressure Control Solenoid "B" Control Circuit High (Shift Solenoid Valve DS2)

DESCRIPTION

Using shift solenoid valve DS1 (inflow to the primary pulley) and shift solenoid valve DS2 (outflow from the primary pulley), the ECM controls the line pressure and fluid volume input to and output from the primary pulley according to the vehicle speed and accelerator pedal angle. As a fail-safe function, if a solenoid is shorted or open, the ECM stops current to the faulty solenoid.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory
P0962	Pressure Control Solenoid "A" Control Circuit Low (Shift Solenoid Valve DS1)	1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other The vehicle is driven so that gear ratio changes occur. There is a short circuit in the shift solenoid valve DS1 circuit. 20 times 1 trip detection logic	Short in shift solenoid valve DS1 circuit Continuously variable transaxle assembly ECM	Comes on	DTC stored
P0963	Pressure Control Solenoid "A" Control Circuit High (Shift Solenoid Valve DS1)	1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other The vehicle is driven so that gear ratio changes occur. There is an open circuit in the shift solenoid valve DS1 circuit. 20 times 1 trip detection logic	Open in shift solenoid valve DS1 circuit Continuously variable transaxle assembly ECM	Comes on	DTC stored
P0966	Pressure Control Solenoid "B" Control Circuit Low (Shift Solenoid Valve DS2)	1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other The vehicle is driven so that gear ratio changes occur. There is a short circuit in the shift solenoid valve DS2 circuit. 20 times 1 trip detection logic	Short in shift solenoid valve DS2 circuit Continuously variable transaxle assembly ECM	Comes on	DTC stored
P0967	Pressure Control Solenoid "B" Control Circuit High (Shift Solenoid Valve DS2)	1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other The vehicle is driven so that gear ratio changes occur. There is an open circuit in the shift solenoid valve DS2 circuit. 20 times 1 trip detection logic	Open in shift solenoid valve DS2 circuit Continuously variable transaxle assembly ECM	Comes on	DTC stored

MONITOR DESCRIPTION

These DTCs indicate an open or short circuit in the shift solenoid valve DS1 or DS2 circuit. When there is an open or short circuit in the shift solenoid valve DS1 or DS2 circuit, the ECM detects the problem, illuminates the MIL and stores the DTC.

WIRING DIAGRAM


*a	Shift Solenoid Valve DS1
*b	Shift Solenoid Valve DS2
*c	Transmission Wire (Continuously Variable Transaxle Assembly)

CAUTION / NOTICE / HINT

Note

Perform initialization when parts related to the continuously variable transaxle are replaced.

Click here
Check that no DTCs are stored after performing initialization.

Click here

PROCEDURE

PERFORM ACTIVE TEST USING GTS (CONTROL THE SHIFT POSIT)

Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.

Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Shift Position.

Powertrain > Engine and ECT > Active Test

Active Test Display
Control the Shift Position

Data List Display
Shift Status

Powertrain > Engine and ECT > Active Test

Tester Display	Measurement Item	Control Range	Diagnostic Note
Control the Shift Position	Operate the shift solenoid valves to allow the gear ratio to be manually selected [1st - 2nd - 3rd - 4th - 5th]	Press "→" button: Shift up Press "←" button: Shift down	Used to check the operation of the shift solenoid valves. Note Performing this test at speeds other than those specified in "Vehicle Condition" will damage the transaxle. [Vehicle Condition] Perform at a vehicle speed of 20 km/h (12 mph) or more and 45 km/h (28 mph) or less.

Tester Display

Measurement Item

Control Range

Diagnostic Note

Control the Shift Position

Operate the shift solenoid valves to allow the gear ratio to be manually selected [1st - 2nd - 3rd - 4th - 5th]

Press "→" button: Shift up
Press "←" button: Shift down

Used to check the operation of the shift solenoid valves.

Note

Performing this test at speeds other than those specified in "Vehicle Condition" will damage the transaxle.

[Vehicle Condition]

Perform at a vehicle speed of 20 km/h (12 mph) or more and 45 km/h (28 mph) or less.

In accordance with the display on the GTS, perform the Active Test.

Result

Proceed to
Gear ratio does not change
Gear ratio changes

Gear ratio changes

GO TO STEP 4 Click here

Gear ratio does not change

INSPECT TRANSMISSION WIRE (SHIFT SOLENOID VALVE DS1 AND DS2)

*a
Component without harness connected

(Transmission Wire)

Disconnect the transmission wire connector.

Measure the resistance according to the value(s) in the table below.

Standard Resistance

Tester Connection	Condition	Specified Condition
5 (DS1) - Body ground	20°C (68°F)	11 to 13 Ω
10 (DS2) - Body ground	20°C (68°F)	11 to 13 Ω

Result

Proceed to
OK
NG

REPLACE CONTINUOUSLY VARIABLE TRANSAXLE ASSEMBLY Click here

CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM)

*a
Front view of wire harness connector

(to ECM)

Disconnect the ECM connector.

Measure the resistance according to the value(s) in the table below.

Standard Resistance

Tester Connection	Condition	Specified Condition
B75-70 (DS1) - Body ground	20°C (68°F)	11 to 13 Ω
B75-69 (DS2) - Body ground	20°C (68°F)	11 to 13 Ω

Result

Proceed to
OK
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

REPLACE ECM

Replace the ECM.

Click here

Result

Proceed to
NEXT

PERFORM INITIALIZATION Click here

REPLACE CONTINUOUSLY VARIABLE TRANSAXLE ASSEMBLY

Replace the continuously variable transaxle assembly.

Click here

Result

Proceed to
NEXT

PERFORM INITIALIZATION Click here