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TM-344 < COMPONENT DIAGNOSIS > [CVT: RE0F10A] P0841 PRESSURE SENSOR FUNCTION P0841 PRESSURE SENSOR FUNCTION Description INFOID:0000000004201925 Using the engine load (throttle position), the primary pulley revolution speed, and the secondary pulley revolu- tion speed as input signal, TCM changes the operating pressure of the primary pulley and the secondary pul- ley and changes the groove width of the pulley to control the gear ratio. DTC Logic INFOID:0000000004201926 DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE CAUTION: Always drive vehicle at a safe speed. NOTE: If “DTC CONFIRMATION PROCEDURE” has been previously performed, always turn ignition switch OFF. Then wait at least 10 seconds before performing the next test. 1. CHECK DTC DETECTION With CONSULT-III 1. Turn ignition switch ON. 2. Select “DATA MONITOR”. 3. Start engine and maintain the following conditions for at least 12 consecutive seconds. Is “P0841 PRESS SEN/FNCTN” detected? YES >> Go to NO >> Check intermittent incident. Refer to GI-42, "Intermittent Incident" . Diagnosis Procedure INFOID:0000000004201927 1. CHECK LINE PRESSURE Perform line pressure test. Refer to TM-423, "Inspection and Judgment" . Is the inspection result normal? YES >> GO TO 2. NO >> Repair or replace damaged parts. Refer to TM-423, "Inspection and Judgment" . 2. CHECK TRANSMISSION FLUID PRESSURE SENSOR A (SECONDARY PRESSURE SENSOR) SYS- TEM . Is the inspection result normal? YES >> GO TO 3. NO >> Repair or replace damaged parts. 3. CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE) 1. Turn ignition switch OFF. 2. Disconnect CVT unit connector. DTC Item (CONSULT-III screen term) Malfunction is detected when... Possible cause P0841 PRESS SEN/FNCTN Secondary pressure became higher than • Harness or connectors (Sensor circuit is open or shorted.) • Transmission fluid pressure sensor A (secondary pressure sensor) VEHICLE SPEED : 40 km/h (25 MPH) or more RANGE : “D” position |