DTC P1791 LINE PRESSURE CONTROL SENSOR
AT-7110flowchartSource typo 'Whitout CONSULT-II' in step-1 OK branch preserved as printed.
Diagnostic Procedure
DTC P1791 line pressure control sensor diagnostic flow
1
CHECK LINE PRESSURE CONTROL SENSOR
2
OK or NG
OK (Without CONSULT-II)
OK (Without CONSULT-II) — GO TO 3.
OK (Without CONSULT-II) — GO TO 3.
CHECK INPUT SIGNAL (Without CONSULT-II)
OK or NG
NG
Repair or replace line pressure control sensor.
OK (With CONSULT-II)
3
OK (With CONSULT-II) — GO TO 2.
4
CHECK POWER SOURCE CIRCUIT (With CONSULT-II)
5
OK or NG
NG
Check the following items: Harness for short or open between TCM harness connector F47 terminal 27 and line pressure control sensor connector F302 terminal 7; 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 connector F302 terminal 7; Ground circuit for TCM harness connector F47 terminal 43.
OK / GO TO 4
6
GO TO 4.
7
CHECK DTC
8
OK or NG
NG
1. Perform TCM input/output signal inspection. 2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
OK
Inspection END