NO.22 NO ENGINE BRAKING IN 1GR POSITION OF M POSITION [AY6A-EL, AY6AX-EL]

id0503k3825200

22

No engine braking in 1GR position of M position

DESCRIPTION

•  Engine speed drops to idle but the vehicle coasts when the accelerator pedal is released during cruising at medium to high speeds.

•  Engine speed drops to idle but the vehicle coasts when accelerator pedal is released when in M position (1GR) at low vehicle speed.

POSSIBLE CAUSE

•  Clutch slippage, burnt (B2 brake)

―  Line pressure low

•  VSS malfunction

•  Input/turbine speed sensor malfunction

•  Shift solenoid A or B malfunction

•  Sensor ground 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	• Do the following symptoms occur concurrently? ― Engine flares up or slips during acceleration ― Engine flares up or slips when shifting	Yes	Go to No.14 “ENGINE FLARES UP OR SLIPS WHEN UPSHIFTING OR DOWNSHIFTING”, or No.15 “ENGINE FLARES UP OR SLIPS WHEN ACCELERATING VEHICLE”.
1		No	Go to the next step.
2	• Stop the engine. • Inspect following solenoids. ― Shift solenoid A (See SHIFT SOLENOID A INSPECTION [AY6A-EL, AY6AX-EL].) ― Shift solenoid B (See SHIFT SOLENOID B INSPECTION [AY6A-EL, AY6AX-EL].) • Are the normal?	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].)
2		No	Inspect the coupler component. If normal, replace the control valve body. (See CONTROL VALVE BODY REMOVAL/INSTALLATION [AY6A-EL, AY6AX-EL].)
3	• 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.