Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota 4Runner 1996-2003 Approved SIL techinfo.toyota.com ileaf 02toyrm 02toypdf 02rmsour 2002 024runne di at cip0750p

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DI-184
                                                  DIAGNOSTICS       -   AUTOMATIC TRANSMISSION
                                                                                                                                           DI0SU-14




    DTC                 P0750               Shift Solenoid "A" Malfunction


    DTC                 P0755               Shift Solenoid "B" Malfunction

SYSTEM DESCRIPTION
The ECM uses signals from the vehicle speed sensor to detect the actual gear position (1st, 2nd, 3rd or O/D
gear).
Then the ECM compares the actual gear with the shift schedule in the ECM memory to detect mechanical
trouble of the shift solenoid valves and valve body.

  DTC No.                        DTC Detecting Condition                                               Trouble Area
    P0750      During normal driving, the gear required by the ECM does not   S Shift solenoid valve No. 1/No. 2 is stuck open or closed
    P0755      match the actual gear (2 trip detection logic).                S Valve body is blocked up or stuck

HINT:
Check the shift solenoid valve No. 1 when DTC P0750 (Shift Solenoid "A" Malfunction) is output and check
shift solenoid valve No. 2 when DTC P0755 (Shift Solenoid "B" Malfunction) is output.


INSPECTION PROCEDURE

   1        Check shift solenoid valve No. 1 or No. 2 operation.

                                                        PREPARATION:
                                                        (a) Remove the oil pan.
                                                        (b) Remove the shift solenoid valve No. 1 or No. 2.
  (+) (-)
                                                        CHECK:
                                                        (a) Applying 490 kPa (5 kgf/cm2, 71 psi) of compressed air,
                                                            check that the solenoid valve does not leak air.
                                                        (b) When battery positive voltage is supplied to the shift sole-
                       (+) (-)
                                                            noid valve, check that the solenoid valve opens.
Q08220
Q08221                                         D00081   OK:
                                                            (a) Solenoid valve does not leak air.
                                                            (b) Solenoid valve opens.

                                                            NG          Replace the shift solenoid valve No. 1 or No. 2.


   OK




2002 4RUNNER (RM887U)

                                                                                 Author :                     Date :                         360
                                                                                        DI-185
                                  DIAGNOSTICS   -   AUTOMATIC TRANSMISSION



  2     Check the valve body (See page DI-175 ).


                                         NG         Repair or replace the valve body.


  OK



 Repair or replace the transmission
 (See page AT-18 and AT-22 ).




2002 4RUNNER (RM887U)

                                                          Author :           Date :      361

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