P0776

K41B CVT: CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: P0746, P0776: Pressure Control Solenoid "A" Performance (Shift Solenoid Valve DS1)


DESCRIPTION

The ECM uses the shift control solenoids (DS1 and DS2) to control the in/out CVT fluid flow volumes at the primary pulley, to perform gear ratio change control.





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 problem, illuminates the MIL and stores the DTC.

MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS

All





P0746 (OFF malfunction) and P0776 (ON malfunction):





P0746 (ON malfunction) and P0776 (OFF malfunction):





TYPICAL MALFUNCTION THRESHOLDS

- 2 detections are necessary per driving cycle:

- 1st detection: temporary flag ON

- 2nd detection: pending fault code ON

P0746 (OFF malfunction) and P0776 (ON malfunction):





P0746 (ON malfunction) and P0776 (OFF malfunction):

Following conditions are met





COMPONENT OPERATING RANGE

P0746

Both the following conditions (A) and (B) are met:





P0776

Both the following conditions (A) and (B) are met:





INSPECTION PROCEDURE

NOTICE:
Perform the universal trip to clear permanent DTCs Reading and Clearing Diagnostic Trouble Codes.

PROCEDURE

1. CHECK OTHER DTCS OUTPUT (IN ADDITION TO DTC P0746 AND P0776)

(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 / DTC / Current or Pending.

(e) Read the DTCs using the Techstream.

Result





HINT
If any other DTCs besides P0746 or P0776 are output, perform troubleshooting for those DTCs first.

B -- GO TO DTC CHART K41B Continuously Variable Transmission/Transaxle, CVT
A -- Continue to next step.

2. REPLACE CONTINUOUSLY VARIABLE TRANSAXLE ASSEMBLY P0711

NEXT -- Continue to next step.

3. PERFORM INITIALIZATION P0705

NEXT -- END