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 position 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 position 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 accelerator pedal position signal
•  Incorrect engine speed signal
•  Incorrect engine coolant temperature signal
•  Incorrect engine torque signal
•  VSS malfunction
•  Turbine sensor malfunction
•  Sensor ground 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 position switch (built-in selector lever) malfunction
•  Selector lever malfunction
•  Short or open circuit in wiring harness
―  Torque converter malfunction
―  Control valve body malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION
1
•  With the ignition switch at the ON position.
•  Does the gear position indication correspond to the selector lever position?
Yes
Go to the next step.
No
Perform the symptom troubleshooting “NO.27 GEAR POSITION INDICATION ILLUMINATES IN D POSITION”, or “NO.28 GEAR POSITION INDICATION DOES NOT ILLUMINATE IN M POSITION”.
(See NO.27 GEAR POSITION INDICATION ILLUMINATES IN D POSITION [SJ6A-EL].)
(See NO.28 GEAR POSITION INDICATION DOES NOT ILLUMINATE IN M POSITION [SJ6A-EL].)
2
•  Access the following PCM PIDs using the M-MDS:
―  RPM
―  APP
―  TP_REL
―  ECT
•  Are the PIDs value normal?
Yes
Go to the next step.
No
Repair or replace the malfunctioning part according to the inspection results.
3
•  Inspect the TFT sensor.
•  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 position 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”.
Abnormal shift:
•  Perform the symptom troubleshooting “NO.9 ABNORMAL SHIFTING”.
5
•  Stop the engine.
•  Inspect the following solenoid:
―  Shift solenoid A
―  Shift solenoid B
―  Shift solenoid C
―  Shift solenoid D
―  Shift solenoid G
―  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.
•  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 Workshop Manual [SJ6A-EL].)
•  If a large amount of metal specks are not found, replace the control valve body.
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].)