Late shift after shifting from N to D, D3, and S, or excessive shock when shifted into D, D3, and S
Check for a stored DTC, and check for loose connections.
Test the solenoid valve function with the HDS.
Inspect the A/T clutch pressure control solenoid valve body gasket, ATF feed pipes, and O-rings, for wear and damage.
Inspect the O-rings, and check the shift solenoid valve seizure.
Check for a loose shift cable at the shift lever and the transmission control lever.
Check the input shaft (mainshaft) speed sensor and output shaft (countershaft) speed sensor installation.
Inspect the sensor O-ring for wear and damage.
Check for clogged orifice in the separator plate. If the orifice is clogged, remove it and clean the separator plate orifice.
Check the 1st clutch pressure.
Check the servo control valve in the main valve body for free movement, and check the valve spring for wear and damage.
Inspect the 1st accumulator piston, O-ring, and spring for wear and damage in the regulator valve body.
Check the 1st check ball for stuck in the main valve body.
Check the lock-up shift valve in the regulator valve body for free movement, and check the valve spring for wear and damage.
Inspect the secondary shaft and 1st clutch for wear and damage.
Inspect the clutch piston, clutch piston check valve, and O-rings. Check the spring retainer for wear and damage. Inspect the clearance between the clutch end-plate and the top disc. If the clearance is out of tolerance, inspect the clutch discs and plates for wear and damage, and inspect the clutch wave-plate height. If the discs and plates are worn or damaged, replace them as a set. If the wave-plate height is out of tolerance, replace the wave-plate. If they are OK, adjust the clearance with the clutch end-plate.
Shift solenoid valve D defective
A/T clutch pressure control solenoid valve A defective
A/T clutch pressure control solenoid valve B defective
A/T clutch pressure control solenoid valve C defective
Shift cable broken or out of adjustment
Connection between shift cable and transmission or body is worn
Input shaft (mainshaft) speed sensor defective
Output shaft (countershaft) speed sensor defective
ATF temperature sensor defective
Foreign material in separator plate orifice
Servo control valve defective
1st accumulator defective
1st check ball stuck
Lock-up shift valve defective
1st clutch defective