NO.7 NO SHIFTING [SJ6A-EL]

id050307801200

7

No shifting

DESCRIPTION

•  Single shift range only.

•  Sometimes it shifts correctly.

POSSIBLE CAUSE

•  When the gear position is fixed in 4GR due to the fail-safe operation, malfunction is in the AT.

―  Clutch burnt (C1 clutch, C2 clutch, C3 clutch, B1 brake, B2 brake, B3 brake, B4 brake)

•  Line pressure low

•  Incorrect throttle position signal

•  Incorrect accelerator pedal position signal

•  Incorrect engine speed signal

•  Incorrect engine coolant temperature signal

•  Incorrect engine torque signal

•  VSS malfunction

•  Turbine sensor malfunction

•  Sensor GND malfunction

•  Shift solenoid A malfunction

•  Shift solenoid B malfunction

•  Shift solenoid C malfunction

•  Shift solenoid D malfunction

•  Shift solenoid E malfunction

•  Shift solenoid F malfunction

•  Shift solenoid G malfunction

•  Line pressure control solenoid malfunction

•  Control valve body malfunction

―  4GR is fixed (Operation in fail-safe function)

•  Short or open circuit in wiring harness

•  Poor connection of connector

•  Poor ground of shift solenoid

•  Malfunction of electronic parts of output and input system

―  TFT sensor malfunction

―  TR switch malfunction

―  TCM malfunction

Note

•  If a tire of a different diameter from the standard tire is installed, the TCM determines that the driving mode is the AAS mode, and may change to a different shift timing from the normal timing.

Diagnostic procedure

STEP	INSPECTION		ACTION
1	• With the ignition switch at the ON position. • Does the gear position indicator light indication correspond to the selector lever position?	Yes	Go to the next step.
1		No	Perform the symptom troubleshooting “NO.27 GEAR POSITION INDICATOR LIGHT DOES NOT ILLUMINATE IN D OR M RANGE”, or “NO.28 GEAR POSITION INDICATOR LIGHT ILLUMINATE IN P, R AND N POSITION”. (See NO.27 GEAR POSITION INDICATOR LIGHT DOES NOT ILLUMINATE IN D OR M RANGE [SJ6A-EL].) (See NO.28 GEAR POSITION INDICATOR LIGHT ILLUMINATE IN P, R AND N POSITION [SJ6A-EL].)
2	• Access the following PCM PIDs using the M-MDS: (See ON-BOARD DIAGNOSTIC TEST [L8, LF].) ― RPM ― APP ― TP ― ECT • Are the PIDs value normal? (See PCM INSPECTION [L8, LF].)	Yes	Go to the next step.
2		No	Repair or replace the malfunctioning part according to the inspection results.
3	• Inspect the TFT sensor. (See TRANSMISSION FLUID TEMPERATURE (TFT) SENSOR INSPECTION [SJ6A-EL].) • Is the TFT sensor normal?	Yes	Go to the next step.
3		No	Replace the TFT sensor. (See TRANSMISSION FLUID TEMPERATURE (TFT) SENSOR REMOVAL/INSTALLATION [SJ6A-EL].)
4	• Stop the engine. • Inspect the following solenoid: (See SOLENOID VALVE INSPECTION [SJ6A-EL].) ― Shift solenoid A ― Shift solenoid B ― Shift solenoid C ― Shift solenoid D ― Shift solenoid E ― Shift solenoid F ― Shift solenoid G ― Line pressure control solenoid • Are these solenoids normal?	Yes	Inspect the ATF condition. • If a large amount of metal specks are found, overhaul the transmission and repair or replace any malfunctioning parts. (See AUTOMATIC TRANSMISSION REMOVAL/INSTALLATION [SJ6A-EL].) (See Automatic Transmission Workshop Manual [SJ6A-EL].) • If a large amount of metal specks are not found, replace the control valve body. (See CONTROL VALVE BODY REMOVAL [SJ6A-EL].) (See CONTROL VALVE BODY INSTALLATION [SJ6A-EL].)
4		No	Replace the control valve body. (See CONTROL VALVE BODY REMOVAL [SJ6A-EL].) (See CONTROL VALVE BODY INSTALLATION [SJ6A-EL].)
5	• Verify test results. ― If normal, return to the diagnostic index to service any additional symptoms. ― If malfunction remains, inspect the related Service Information and perform repair or diagnosis. • If the vehicle is repaired, troubleshooting completed. • If the vehicle is not repaired or additional diagnostic information is not available, replace the TCM. (See TCM REMOVAL/INSTALLATION [SJ6A-EL].)