Toyota Corolla Cross: Pressure Control Solenoid "M" Actuator Stuck Off (P08C37F,P091400)

DESCRIPTION

Using the current from the TCM, the shift solenoid valve SLG controls the B1 brake when the shift lever is in R, and controls the S1 synchronizer when the shift lever is in P, N, D or M.

When the TCM requests the shift mode to be changed to gear mode, the S1 synchronizer is engaged and input torque is transferred to the 1st gear.

When the TCM requests the shift mode to be changed to belt mode and certain conditions are met, the S1 synchronizer is released and input torque is not transferred to the 1st gear.

The shift stroke sensor detects the S1 synchronizer position using the magnet on the shift fork, and sends signals to the TCM.

MONITOR DESCRIPTION

With the shift lever in P, N, D or M, the shift solenoid valve SLG controls the S1 synchronizer and moves it to the requested position according to the requested shift mode.

When the TCM detects that the S1 synchronizer is not in the appropriate position, it determines that the shift solenoid valve SLG or shift stroke sensor is malfunctioning, illuminates the MIL and stores a DTC.

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

• OFF malfunction (A)

  Shift position	"N" or "P" or "D" or "B"
  Shift solenoid valve SLP	Operating shift control by TCM command
  Engine speed	500 rpm or more

  OFF malfunction (B)

  Engine speed	550 rpm or more
  Transmission fluid temperature	-10°C (14°F) or more
  Time after following condition is met	0.5 sec. or more
  - l Variation of the accelerator pedal angle l (within 32.768 msec.)	Less than 0.5%
  Shift solenoid valve SLS	Operating clamping pressure control by TCM command
  ECT	60°C (140°F) or more
  Spark advance from MAX. retard timing by KCS control	0°CA or more
  Gear and belt mode clutch	Either engagement or disengagement

  ON malfunction (A)

  Shift position	"N" or "P" or "D" or "B"
  Gear mode clutch	Released
  Reverse clutch	Released
  Shift solenoid valve SLP	Operating shift control by TCM command
  Shift solenoid valve SLG	Operating synchronizer control by TCM command
  Engine speed	500 rpm or more
  Any of the following conditions are met: (a) or (b)	-
  (a) Gear mode clutch speed	Less than 4500 rpm
  (b) Time after following condition is met at CVT fluid temperature 80°C (176°F) (Conditions vary with CVT fluid temperature)	60 sec. or more
  - Engine speed	400 rpm or more

  ON malfunction (B)

  *It is calculated, when TCM switch indicate from synchronizer engaged to release
  Shift position	"N" or "P" or "D" or "B"
  Gear mode clutch	Released
  Reverse clutch	Released
  Shift solenoid valve SLP	Operating shift control by TCM command
  Shift solenoid valve SLG	Operating synchronizer control by TCM command
  Engine speed	500 rpm or more
  Any of the following conditions are met: (a) or (b)	-
  (a) Gear mode clutch speed	Less than 4500 rpm
  (b) Time after following condition is met at CVT fluid temperature 80°C (176°F) (Conditions vary with CVT fluid temperature)	60 sec. or more
  - Engine speed	400 rpm or more
  Belt mode clutch	Engaged
  Synchronizer output speed - Synchronizer input speed*	100 rpm or more
  Output speed	500 rpm or more

  ON malfunction (C)

  Shift position	"N" or "P" or "D" or "B"
  Gear mode clutch	Released
  Reverse clutch	Released
  Shift solenoid valve SLP	Operating shift control by TCM command
  Shift solenoid valve SLG	Operating synchronizer control by TCM command
  Engine speed	500 rpm or more
  Any of the following conditions are met: (a) or (b)	-
  (a) Gear mode clutch speed	Less than 4500 rpm
  (b) Time after following condition is met at CVT fluid temperature 80°C (176°F) (Conditions vary with CVT fluid temperature)	60 sec. or more
  - Engine speed	400 rpm or more

• OFF malfunction (A)

  Shift position	"N" or "P" or "D" or "B"
  Shift solenoid valve SLP	Operating shift control by TCM command
  Engine speed	500 rpm or more

  OFF malfunction (B)

  Engine speed	550 rpm or more
  Transmission fluid temperature	-10°C (14°F) or more
  Time after following condition is met	0.5 sec. or more
  - l Variation of the accelerator pedal angle l (within 32.768 msec.)	Less than 0.5%
  Shift solenoid valve SLS	Operating clamping pressure control by TCM command
  ECT	60°C (140°F) or more
  Spark advance from MAX. retard timing by KCS control	0°CA or more
  Gear and belt mode clutch	Either engagement or disengagement

  ON malfunction (A)

  Shift position	"N" or "P" or "D" or "B"
  Gear mode clutch	Released
  Reverse clutch	Released
  Shift solenoid valve SLP	Operating shift control by TCM command
  Shift solenoid valve SLG	Operating synchronizer control by TCM command
  Engine speed	500 rpm or more
  Any of the following conditions are met: (a) or (b)	-
  (a) Gear mode clutch speed	Less than 4500 rpm
  (b) Time after following condition is met at CVT fluid temperature 80°C (176°F) (Conditions vary with CVT fluid temperature)	60 sec. or more
  - Engine speed	400 rpm or more

  ON malfunction (B)

  Shift position	"N" or "P" or "D" or "B"
  Gear mode clutch	Released
  Reverse clutch	Released
  Shift solenoid valve SLP	Operating shift control by TCM command
  Shift solenoid valve SLG	Operating synchronizer control by TCM command
  Engine speed	500 rpm or more
  Any of the following conditions are met: (a) or (b)	-
  (a) Gear mode clutch speed	Less than 4500 rpm
  (b) Time after following condition is met at CVT fluid temperature 80°C (176°F) (Conditions vary with CVT fluid temperature)	60 sec. or more
  - Engine speed	400 rpm or more

  ON malfunction (C)

  Shift position	"N" or "P" or "D" or "B"
  Gear mode clutch	Released
  Reverse clutch	Released
  Shift solenoid valve SLP	Operating shift control by TCM command
  Shift solenoid valve SLG	Operating synchronizer control by TCM command
  Engine speed	500 rpm or more
  Any of the following conditions are met: (a) or (b)	-
  (a) Gear mode clutch speed	Less than 4500 rpm
  (b) Time after following condition is met at CVT fluid temperature 80°C (176°F) (Conditions vary with CVT fluid temperature)	60 sec. or more
  - Engine speed	400 rpm or more

TYPICAL MALFUNCTION THRESHOLDS

• OFF malfunction
  • All of the following conditions are met OFF malfunction (A)

    TCM indicate synchronizer	Engagement
    Synchronizer	Not engaged

    OFF malfunction (B) (after OFF malfunction (A) is met)

    Target clamping pressure	1.4 MPa (14.3 kgf/cm2, 203 psi) or more
    Actual clamping pressure - Target clamping pressure	Less than 0.5 MPa (5.1 kgf/cm2, 73 psi)

• ON malfunction
  • ON malfunction (A) and (B) are met or ON malfunction (C) is met ON malfunction (A)

    TCM indicate synchronizer	Release
    Synchronizer	Engaged

    ON malfunction (B) (after ON malfunction (A) is met)

    l Synchronizer input speed - Synchronizer output speed l

    Less than 100 rpm

    ON malfunction (C)

    TCM indicate synchronizer	Release
    Synchronizer	Not released

• OFF malfunction
  • All of the following conditions are met OFF malfunction (A)

    TCM indicate synchronizer	Engagement
    Synchronizer	Not engaged

    OFF malfunction (B) (after OFF malfunction (A) is met)

    Target clamping pressure	1.4 MPa (14.3 kgf/cm2, 203 psi) or more
    Actual clamping pressure - Target clamping pressure	Less than 0.5 MPa (5.1 kgf/cm2, 73 psi)

• ON malfunction
  • ON malfunction (A) and (B) are met or ON malfunction (C) is met ON malfunction (A)

    TCM indicate synchronizer	Release
    Synchronizer	Engaged

    ON malfunction (B) (after ON malfunction (A) is met)

    l Synchronizer input speed - Synchronizer output speed l

    300 rpm or more

    ON malfunction (C)

    TCM indicate synchronizer	Release
    Synchronizer	Not released

CONFIRMATION DRIVING PATTERN

CAUTION:

When performing the confirmation driving pattern, obey all speed limits and traffic laws.

HINT:

• After repairs have been completed, clear the DTCs and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
• When clearing the permanent DTCs, refer to the Clear Permanent DTC procedure.

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1. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
2. Turn the ignition switch off and wait for 2 minutes or more.
3. Turn the ignition switch to ON and turn the GTS on.
4. Start the engine.
5. Perform the D Position Shift Test inspection in Road Test. [*1]

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   HINT:

   [*1]: Normal judgment procedure.

   The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.

6. Stop the vehicle.
7. Enter the following menus: Powertrain / Transmission / Utility / All Readiness.
8. Input the DTC: P08C37F or P091400.
9. Check the DTC judgment result.

   GTS Display	Description
   NORMAL	DTC judgment completed System normal
   ABNORMAL	DTC judgment completed System abnormal
   INCOMPLETE	DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions
   N/A	Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

   HINT:

   • If the judgment result shows NORMAL, the system is normal.
   • If the judgment result shows ABNORMAL, the system has a malfunction.
   • If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

CAUTION / NOTICE / HINT

NOTICE:

• Perform the universal trip to clear permanent DTCs.

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• Perform registration and/or initialization when parts related to the continuously variable transaxle system are replaced.

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• Check that no DTCs are stored after performing initialization.

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HINT:

If any DTCs other than P08C37F or P091400 are output, perform troubleshooting for those DTCs first.

PROCEDURE

(a) Enter the following menus:

(b) Read the DTCs using the GTS.

HINT:

• If DTC P08C312 or P08C314 is output, perform troubleshooting for that DTC first.
• If DTCs P08C312 and P08C314 are not output but DTC P091412 or P091414 is output, perform troubleshooting for DTC P091412 or P091414 first.

B

GO TO DTC CHART (DTC P08C312)

C

GO TO DTC CHART (DTC P08C314)

D

GO TO DTC CHART (DTC P091412)

E

GO TO DTC CHART (DTC P091414)

F

GO TO DTC CHART

A

(a) Connect 3 new dry-cell batteries (1.5 V each) in series.

(b) Prepare a magnet or equivalent tool.

(c) Remove the shift stroke sensor.

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(d) Connect a positive (+) lead from the batteries to terminal 2 (VDD) and a negative (-) lead to terminal 3 (GND).

(e) Wave the magnet left and right 2.6 mm (0.102 in.) or less from the tip of the shift stroke sensor to output a high/low signal while measuring the voltage.

(f) Measure the voltage according to the value(s) in the table below.

Standard Voltage (Combined Dry-cell Battery Voltage of 4.5 V):

Reference Voltage (Combined Dry-cell Battery Voltage of 5.0 V):

(g) Install the shift stroke sensor.

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NG

REPLACE SHIFT STROKE SENSOR

OK

(a) Disconnect the transmission wire connector from the shift solenoid valve SLG.

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(b) Connect a positive (+) lead from the auxiliary battery with a 21 W bulb to terminal 1 and a negative (-) lead to terminal 2 of the shift solenoid valve SLG connector. Check that the valve moves and makes an operating sound.

OK:

Valve moves and makes an operating sound.

NG

GO TO STEP 5

OK

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PERFORM REGISTRATION AND INITIALIZATION for Registration: Click here for Initialization: Click here

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PERFORM REGISTRATION AND INITIALIZATION for Registration: Click here for Initialization: Click here

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