NO.8 DOES NOT SHIFT TO 6GR [SJ6A-EL]

id050307801300

8 | Does not shift to 6GR
DESCRIPTION | • Vehicle does not upshift from 5GR to 6GR even though vehicle speed increased. • Vehicle does not shift to 6GR even though accelerator pedal is released in D range at 80 km/h {50 mph}.
POSSIBLE CAUSE | • Basically, the TCC does not operate when the fail-safe is operating. Verify the DTC at first. If the TCC operates when driving at high speeds only, the malfunction (improper adjustment) is in the M range switch circuit or TR switch circuit. Caution • If the TCC is stuck, inspect it. In addition, inspect the oil cooler for foreign particles which may have mixed in with the ATF. ― C2 clutch, C3 clutch, B2 brake slippage, burnt • 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 ― TFT sensor malfunction • Short or open circuit in wiring harness • Poor connection of connector • Sensor malfunction ― TR switch malfunction • Selector lever malfunction • TR switch adjustment incorrect ― Shift solenoid A, shift solenoid B, shift solenoid C, shift solenoid D, shift solenoid G, line pressure control solenoid malfunction • Short or open circuit in wiring harness • Poor connection of connector • Solenoid valve stuck ― M range switch (built-in selector lever) malfunction • Selector lever malfunction • Short or open circuit in wiring harness ― Torque converter malfunction ― Control valve body malfunction Note • Before following the troubleshooting steps, make sure that the Automatic Transmission On-Board Diagnostic and Automatic Transmission Basic Inspection are conducted. (See BASIC INSPECTION [SJ6A-EL].)

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.
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.
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.
No | Replace the TFT sensor. (See TRANSMISSION FLUID TEMPERATURE (TFT) SENSOR REMOVAL/INSTALLATION [SJ6A-EL].)
4 | • Drive the vehicle in D range and inspect following: ― 1–2 shift up and down ― 2–3 shift up and down ― 3–4 shift up and down ― 4–5 shift up and down ― 5–6 shift up and down • Are all shift-up and shift-down possible? | Yes | Go to the next step.
No | No shift at all: • Perform the symptom troubleshooting “NO.7 NO SHIFTING”. (See NO.7 NO SHIFTING [SJ6A-EL].) Abnormal shift: • Perform the symptom troubleshooting “NO.9 ABNORMAL SHIFTING”. (See NO.9 ABNORMAL SHIFTING [SJ6A-EL].)
5 | • 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 F ― Line pressure control solenoid • Are these solenoids normal? | Yes | Go to the next step.
No | Inspect for shift solenoid stuck. (See SOLENOID VALVE INSPECTION [SJ6A-EL].)
6 | • Inspect the ATF condition. (See AUTOMATIC TRANSMISSION FLUID (ATF) INSPECTION [SJ6A-EL].) • Are there any metal specks found? | 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].)
No | Replace the torque converter. (See TORQUE CONVERTER REMOVAL/INSTALLATION [SJ6A-EL].)
7 | • 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].)