NO.8 DOES NOT SHIFT TO 6GR [AY6A-EL, AY6AX-EL]

id0503k3801300

8 | Does not shift to 6GR
DESCRIPTION | • Vehicle does not upshift from 5GR to 6GR even though vehicle speed is increased. • Vehicle does not shift to 6GR even though accelerator pedal is released in D position at 80 km/h {50 mph}.
POSSIBLE CAUSE | • The malfunctioning circuit is basically the same as No.9 “ABNORMAL SHIFTING”. However, a malfunction of the TFT sensor, M position switch circuit or TR switch circuit. ― Clutch or brake slippage, burnt • Line pressure low • Incorrect accelerator opening signal • VSS malfunction • Input/turbine speed sensor malfunction • Sensor ground malfunction • Shift solenoid C malfunction • Shift solenoid D malfunction • Shift solenoid E malfunction • Line pressure control solenoid malfunction • Shift solenoid F malfunction • Control valve body malfunction ― TFT sensor malfunction • Short or open circuit in wiring harness • Poor connection of connector • Sensor malfunction ― TR switch malfunction • Selector lever adjustment incorrect ― M position switch malfunction • Selector lever adjustment incorrect • 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 Transaxle On-Board Diagnostic and Automatic Transaxle Basic Inspection are conducted. (See BASIC INSPECTION [AY6A-EL, AY6AX-EL].)

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | • With the ignition switch at the ON position. • Does the gear position indicator light indication correspond to selector lever position? | Yes | Go to the next step.
No | Go to No.27 “GEAR POSITION INDICATOR LIGHT DOES NOT ILLUMINATE IN D OR M POSITION”, or No.28 “GEAR POSITION INDICATOR LIGHT ILLUMINATE IN P, R OR N POSITION”.
2 | • 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: • Go to No.7 “NO SHIFTING”. Abnormal shift: • Go to No.9 “ABNORMAL SHIFTING”.
3 | • Stop the engine. • Inspect following solenoid. ― Shift solenoid C (See SHIFT SOLENOID C INSPECTION [AY6A-EL, AY6AX-EL].) ― Shift solenoid D (See SHIFT SOLENOID D INSPECTION [AY6A-EL, AY6AX-EL].) ― Shift solenoid E (See SHIFT SOLENOID E INSPECTION [AY6A-EL, AY6AX-EL].) ― Shift solenoid F (See SHIFT SOLENOID F INSPECTION [AY6A-EL, AY6AX-EL].) ― Line pressure control solenoid (See LINE PRESSURE CONTROL SOLENOID INSPECTION [AY6A-EL, AY6AX-EL].) • Are they normal? | Yes | Go to the next step.
No | Inspect the coupler component. If normal, replace the control valve body. (See CONTROL VALVE BODY REMOVAL/INSTALLATION [AY6A-EL, AY6AX-EL].)
4 | • Perform the stall test. (See MECHANICAL SYSTEM TEST [AY6A-EL, AY6AX-EL].) • Is the stall speed within the specified? | Yes | Inspect the ATF condition. If large amount of metal specks are found, replace the transaxle. (See AUTOMATIC TRANSAXLE REMOVAL/INSTALLATION [AY6A-EL, AY6AX-EL].) If a large amount of metal specks are not found, replace the control valve body. (See CONTROL VALVE BODY REMOVAL/INSTALLATION [AY6A-EL, AY6AX-EL].)
No | Replace the torque converter. (See TORQUE CONVERTER REMOVAL/INSTALLATION [AY6A-EL, AY6AX-EL].)
5 | • Verify test results. ― If normal, return to the diagnostic index to service any additional symptoms. ― If malfunction remains, inspect the related Service Bulletins and/or On-line Repair 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.