TROUBLE DIAGNOSES FOR NON-DETECTABLE ITEMS - Diagnostic Procedure
AT-7120flowchartDiagnostic Procedure
Diagnostic Procedure - Line Pressure Control Sensor
1
1. CHECK LINE PRESSURE CONTROL SENSOR. Refer to "Component Inspection" AT-7123.
OK (Without CONSULT-II)
3. CHECK INPUT SIGNAL (Without CONSULT-II). Without CONSULT-II. Refer to "Component Inspection", AT-7123.
NG
Repair or replace line pressure control sensor.
OK (With CONSULT-II)
2
2. CHECK POWER SOURCE CIRCUIT (With CONSULT-II). With CONSULT-II: 1. Start engine. 2. Select "ECU Input Item Parameter List" in "DATA MONITOR" mode for "CVT" with CONSULT-II. 3. Read out the value of "LINE PRESS SEN" while driving. Check the value changes according to driving speed. Specification: Approximately 0.5 - 5.5 MPa
NG
Check the following items: Harness for short or open between TCM harness connector F47 terminal 27 and line pressure control sensor (Main harness). Ground circuit for TCM harness connector F47 terminal 43.
Check the following items: Harness for short or open between TCM harness connector F47 terminal 27 and line pressure control sensor (Main harness). Ground circuit for TCM harness connector F47 terminal 43.
OK
3
4. CHECK DTC. Perform Diagnostic Trouble Code (DTC) confirmation procedure, AT-7117.
NG
1. Perform TCM input/output signal inspection. 2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
OK
4
GO TO 5.