| HDS does not communicate with the PCM |
DLC circuit |
Troubleshoot the DLC circuit (see DLC CIRCUIT TROUBLESHOOTING
). |
| When you turn the ignition switch to ON (II), the D indicator comes on in all shift lever positions, or it never comes on at all |
- F-CAN communication line error
- Gauge control module defective
- PCM defective
|
|
| A/T gear position indicator does not come on while the shift lever is in that positions; shift indicator does not work |
- F-CAN communication line error
- Gauge control module defective
- PCM defective
- Transmission range switch defective
|
|
| Speedometer does not work |
- F-CAN communication line error
- Gauge control module defective
- PCM defective
- Output shaft (countershaft) speed sensor defective
|
- Check the F-CAN communication line (see F-CAN CIRCUIT TROUBLESHOOTING
).
- Check the F-CAN communication line by using the gauge control module self-diagnostic function (see THE COMMUNICATION LINE CHECK
).
- Check the speedometer drive circuit in the gauge control module with the HDS.
- Check for a stored DTC, and check for loose connections.
- Check the speed sensor installation.
- Inspect the sensor O-ring for wear and damage.
|
| When you turn the ignition switch to ON (II), the D3 indicator comes on and stays on in all shift lever positions, or it never comes on at all |
- F-CAN communication line error
- Gauge control module defective
- PCM defective
- D3 switch defective
- D3 switch circuit defective
|
|
| D3 indicator does not come on in D3 driving mode |
- F-CAN communication line error
- Gauge control module defective
- PCM defective
- D3 switch defective
- D3 switch circuit defective
|
|
| Transmission still shifts into 4th or 5th gear in D even though the D3 switch is pushed |
- D3 switch defective
- D3 switch circuit defective
- Transmission range switch defective.
|
|
| Shift lever cannot be moved from P while pressing on the brake pedal |
- Brake pedal position switch circuit
- Brake pedal position switch defective
- Shift lock solenoid defective
- Shift lock solenoid control circuit defective
- Shift lock mechanism defective
- Transmission range switch ATPP switch stuck OFF
- Transmission range switch ATPP switch circuit open
- APP sensor circuit
- APP sensor defective
- Throttle body defective
- PCM defective
|
|
| Ignition switch cannot be moved from ACCESSORY (1) to LOCK (0) (key is pushed in, the shift lever in P) |
- Interlock control system circuit
- Key interlock solenoid stuck ON
- Park pin switch stuck OFF
- Transmission range switch defective
|
|
| Engine runs, but vehicle does not move in any gear |
- Low ATF level
- Shift cable broken or out of adjustment
- Connection between shift cable and transmission or shift lever is worn
- ATF pump worn or binding
- Regulator valve stuck or spring worn
- ATF strainer clogged
- Foreign material in separator plate orifice
- Mainshaft worn or damaged
- Countershaft worn or damaged
- Final gears worn or damaged
- Park mechanism defective
- Selector control shaft worn or damaged
- Drive plate defective
- Torque converter defective
- Transmission-to-engine assembly error
- Axle disengaged
|
- Check the ATF level and check the ATF cooler lines for leaks and loose connections. If necessary, clean the ATF cooler lines.
- Check for a loose shift cable at the shift lever and the selector control lever.
- Check the stall speed (see STALL SPEED TEST
).
- Check the line pressure (see PRESSURE TEST
).
- Improper alignment of the ATF pump and the torque converter housing may cause ATF pump seizure. The symptoms are mostly an rpm-related ticking noise or a high pitched squeak.
- Check the regulator valve in the regulator valve body for free movement, and check the valve springs for wear and damage.
- Check the ATF strainer for debris. If the strainer is clogged, find the damaged components that caused the debris. If no cause for contamination is found, replace the torque converter.
- Check for a clogged orifice in the separator plate. If the orifice is clogged, remove it and clean the separator plate orifice.
- Inspect the differential pinion gears for wear. If the differential pinion gear are worn, replace the differential assembly, replace the ATF strainer, thoroughly clean the transmission, and clean the cooler and lines.
- Replace the torque converter.
- Be careful not to damage the torque converter housing when replacing the main ball bearing. You may also damage the ATF pump when you torque down the main valve body. This will cause ATF pump seizure, use the proper tools.
- Install the main seal flush with the torque converter housing. If you push it into the torque converter housing until it bottoms out, it will block the fluid return passage and result in damage.
- Inspect the countershaft and the secondary shaft for wear and damage.
- Inspect the park mechanism at the park lever link, park gear, and 2nd gears.
- Check the drive plate for wear and damage, replace the drive plate if it is worn or damaged.
- Check for a misinstalled transmission.
|
| Vehicle moves in R, but not in D, 2, or 1 |
- 1st accumulator defective
- Idler gears worn or damaged
- 1st clutch defective
- 5th clutch defective
|
- Check the 1st pressure (see PRESSURE TEST
).
- Inspect the mainshaft, the countershaft, the secondary shaft, intermediary shaft, and the idler gears for wear and damage.
- Inspect the 1st clutch for wear and damage.
- Inspect the clutch piston, the clutch piston check valve, and the 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 the plates for wear and damage, and inspect the clutch wave-plate height. If the discs and the plates are worn or damaged, replace them as a set. If the clutch wave-plate height is out of tolerance, replace the clutch wave-plate. If they are OK, adjust the clearance with the clutch end-plate.
- Check the 1st accumulator piston, the O-ring, and the spring in the accumulator body for wear and damage.
|
| Vehicle moves in 2, 1, and R, but not in D |
- 1st gear one-way clutch defective
- 1st gears worn of damaged
- 1st clutch defective
|
- Check the 1st clutch pressure (see PRESSURE TEST
).
- Inspect the mainshaft, the countershaft, 1st gears, and the one-way clutch for wear and damage.
- Inspect the 1st clutch for wear and damage.
- Inspect the clutch piston, the clutch piston check valve, and the 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 the plates for wear and damage, and inspect the clutch wave-plate height. If the discs and the plates are worn or damaged, replace them as a set. If the clutch wave-plate height is out of tolerance, replace the clutch wave-plate. If they are OK, adjust the clearance with the clutch end-plate.
|
| Vehicle moves in D, 2, and 1, but not in R (or moves forward in R) |
- Shift fork shaft stuck
- 5th accumulator defective
- 5th clutch defective
- Reverse gears worn or damaged
- Reverse idler gear shaft/holder worn or damaged
- Reverse selector or reverse selector hub worn or damaged
|
- Check for a missing shift fork bolt on the shift fork shaft.
- Check the shift fork shaft detent for wear and damage.
- Check for a stuck servo valve in the regulator valve body, and check the O-ring for wear and damage.
- Check the stall speed in R (see STALL SPEED TEST
).
- Check the 5th clutch pressure (see PRESSURE TEST
).
- Inspect the 5th clutch for wear and damage.
- Inspect the clutch piston, the clutch piston check valve, and the 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 the plates for wear and damage, and inspect the clutch wave-plate height. If the discs and the plates are worn or damaged, replace them as a set. If the clutch wave-plate height is out of tolerance, replace the clutch wave-plate. If they are OK, adjust the clearance with the clutch end-plate.
- Check the 5th accumulator piston, the O-ring, and the spring in the accumulator body for wear and damage.
- Inspect the reverse idler gear shaft/holder for wear and damage.
- Inspect the reverse selector gear teeth chamfers, and inspect the engagement teeth chamfers of the countershaft 5th gear and the reverse gear. Replace the reverse gears and the reverse selector if they are worn or damaged. If the transmission makes clicking, grinding, or whirring noises, also replace the mainshaft 5th gear, the reverse idler gear, and the countershaft 5th gear.
|
| Poor acceleration; flares when starting off in D and R |
- Low ATF level
- Shift cable broken or out of adjustment
- ATF pump worn or binding
- Regulator valve stuck or spring worn
- Stator shaft worn or damaged
- ATF strainer clogged
- Torque converter one-way clutch defective
- Torque converter check valve defective
- Shift valve E defective
|
- Check the ATF level and check the ATF cooler lines for leaks and loose connections. If necessary, clean the ATF cooler lines.
- Check for a loose shift cable at the shift lever and the selector control lever.
- Check the stall speed (see STALL SPEED TEST
).
- Check the line pressure (see PRESSURE TEST
).
- Improper alignment of ATF pump and the torque converter housing may cause ATF pump seizure. The symptoms are mostly an rpm-ticking noise or a high pitched squeak.
- Check the regulator valve in the regulator valve body for free movement, and check the valve springs for wear and damage.
- Check the stator shaft splines for wear and damage.
- Check the ATF strainer for debris. If the strainer is clogged, find the damaged components that caused the debris. If no cause for contamination is found, replace the torque converter.
- Check the torque converter check valve in the main valve body for free movement, and check the valve spring for wear and damage.
- Check shift valve E in the main valve body for free movement, and check the valve spring for wear and damage.
- Replace the torque converter.
|
| Poor acceleration; flares when starting off in D and R; stall speed high in D, 2, and 1 |
- Low ATF level
- 1st accumulator defective
- 1st clutch defective
|
- Check the ATF level, and check the ATF cooler lines for leaks and loose connections. If necessary, clean the ATF cooler lines.
- Check the 1st clutch pressure (see PRESSURE TEST
).
- Inspect the 1st clutch for wear and damage.
- Inspect the clutch piston, the clutch piston check valve, and the 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 the plates for wear and damage, and inspect the clutch wave-plate height. If the discs and the plates are worn or damaged, replace them as a set. If the clutch wave-plate height is out of tolerance, replace the clutch wave-plate. If they are OK, adjust the clearance with the clutch end-plate.
- Check the 1st accumulation piston, the O-ring, and the spring in the accumulator body for wear and damage.
|
| Poor acceleration; flares when starting off in D and R; stall speed high in 1st |
- Low ATF level
- 1st-hold clutch defective
|
- Check the ATF level, and check the ATF cooler lines for leaks and loose connections. If necessary, clean the ATF cooler lines.
- Check the 1st-hold clutch pressure (see PRESSURE TEST
).
- Inspect the 1st-hold clutch for wear and damage.
- Inspect the clutch piston, the clutch piston check valve, and the O-rings. Check the spring retainer for wear and damage. Inspect the clearance between clutch plate Band the top disc. If the clearance is out of tolerance, inspect the clutch discs and the plates for wear and damage, and inspect the clutch wave-plate height. If the discs and the plates are worn or damaged, replace them as a set. If the clutch wave-plate height is out of tolerance, replace the clutch wave-plate.
|
| Poor acceleration; flares when starting off in D and R; stall speed high in 2nd |
- Low ATF level
- 2nd accumulator defective
- 2nd clutch defective
|
- Check the ATF level, and check the ATF cooler lines for leaks and loose connections. If necessary, clean the ATF cooler lines.
- Check the 2nd clutch pressure (see PRESSURE TEST
).
- Inspect the 2nd clutch for wear and damage.
- Inspect the clutch piston, the clutch piston check valve, and the 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 the plates for wear and damage, and inspect the clutch wave-plate height. If the discs and the plates are worn or damaged, replace them as a set. If the clutch wave-plate height is out of tolerance, replace the clutch wave-plate. If they are OK, adjust the clearance with the clutch end-plate.
- Check the 2nd accumulator piston, the O-ring, and the spring in the accumulator body for wear and damage.
|
| Poor acceleration; flares when starting off in D and R; stall speed high in R |
- Low ATF level
- Shift cable broken or out of adjustment
- 5th accumulator defective
- 5th clutch defective
|
- Check the ATF level, and check the ATF cooler lines for leaks and loose connections. If necessary, clean the ATF cooler lines.
- Check for a loose shift cable at the shift lever and the selector control lever.
- Check the stall speed in R (see STALL SPEED TEST
).
- Check the 5th clutch pressure (see PRESSURE TEST
).
- Inspect the 5th clutch for wear and damage.
- Inspect the clutch piston, the clutch piston check valve, and the 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 the plates for wear and damage, and inspect the clutch wave-plate height. If the discs and the plates are worn or damaged, replace them as a set. If the clutch wave-plate height is out of tolerance, replace the clutch wave-plate. If they are OK, adjust the clearance with the clutch end-plate.
- Check the 5th accumulator piston, the O-ring, and the spring in the accumulator body for wear and damage.
|
| Poor acceleration; flares when starting off in D and R; stall speed low |
- Engine output low
- Torque converter clutch piston defective
|
- Check the stall speed (see STALL SPEED TEST
).
- Replace the torque converter.
- Check the engine control system.
- Check the fuel pressure (see FUEL PRESSURE TEST
).
- Check for exhaust restriction.
- Check for intake restriction.
- Check the engine rocker arms.
|
| Engine does not rev to high rpm, and the transmission upshifts at low rpm (engine at normal operating temperature) |
- Engine rocker arms defective
- Low fuel pressure
- Restricted exhaust
- Engine output low
- Restricted intake
|
- Check the engine rocker arms.
- Check the fuel pressure (see FUEL PRESSURE TEST
).
- Check for exhaust restriction.
- Check the engine control system.
- Check for intake restriction.
|
| Engine idle vibration; engine stalls, idles low or rough |
- Worn engine or transmission mounts
- Engine output low
- Torque converter clutch piston defective
- Shift solenoid valve D defective
- A/T clutch pressure control solenoid valve C defective
- Lock-up control valve defective
- Lock-up timing valve defective
- Tight valves
|
- Check the ATF level, and check the ATF cooler lines for leaks and loose connections. If necessary, clean the ATF cooler lines.
- Check the engine and transmission mounts.
- Check the engine control system.
- Replace the torque converter.
- Inspect the shift solenoid valve D function with the HDS (see SHIFT SOLENOID VALVE TEST, REPLACEMENT, AND SHIFT SOLENOID WIRE HARNESS REPLACEMENT
).
- Check for a seized shift solenoid valve, and inspect the O-rings.
- Inspect A/T clutch pressure control solenoid valve C with the HDS (see A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE C TEST
).
- Check the lock-up timing valve in the main valve body for free movement, and check the valve spring for wear and damage.
- Check the lock-up control valve in the regulator valve body for free movement, and check the valve spring for wear and damage.
- Check the valve adjustment.
|
| Vehicle moves in N |
- Excessive ATF
- ATF temperature sensor defective
- Foreign material in separator plate orifice
- Relief valve defective
- Reverse control valve defective
- Lubrication control valve defective
- 1st-hold clutch defective
- 1st clutch defective
- 2nd clutch defective
- 3rd clutch defective
- 4th clutch defective
- 5th clutch defective
- Clearance between clutch end-plate and top disc incorrect
- Needle bearing seized, worn, or damaged
|
- Check the ATF level, and drain the ATF if it is over-filled.
- Inspect the ATF temperature sensor O-ring for wear and damage.
- Check all clutch pressures (see PRESSURE TEST
).
- Check for a clogged orifice in the separator plate. If the orifice is clogged, remove it and clean the separator plate orifice.
- Check the relief valve and the lubrication control valve in the main valve body for free movement, and check the valve springs for wear and damage.
- Check the reverse control valve in the secondary valve body for free movement, and check the valve spring for wear and damage.
- Check the stall speed (see STALL SPEED TEST
).
- Inspect all clutches for wear and damage.
- Inspect the clutch piston, the clutch piston check valve, and the 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 the plates for wear and damage, and inspect the clutch wave-plate height. If the discs and the plates are worn or damaged, replace them as a set. If the clutch wave-plate height is out of tolerance, replace the clutch wave-plate. If they are OK, adjust the clearance with the clutch end-plate.
- Check the needle bearings on all shafts for seizure, wear, and damage.
|
| Delayed engagement after shifting from N to D, or excessive shock when shifting |
- Worn engine or transmission mounts
- Shift solenoid valve A defective
- Shift solenoid valve B defective
- Shift solenoid valve C defective
- A/T clutch pressure control solenoid valve C defective
- Shift cable broken or out of adjustment
- Connection between shift cable and transmission or shift lever is worn
- ATF temperature sensor defective
- CPC valve C stuck
- ATF strainer clogged
- Foreign material in separator plate orifice
- Shift valve A defective
- Shift valve D defective
- Shift valve E defective
- 1st accumulator defective
- 2nd accumulator defective
- 1st check ball stuck
- 1st clutch defective
- Clearance between clutch end-plate and top disc incorrect
|
- Check the engine and transmission mounts.
- Inspect shift solenoid valve function with the HDS (see SHIFT SOLENOID VALVE TEST, REPLACEMENT, AND SHIFT SOLENOID WIRE HARNESS REPLACEMENT
).
- Check for a seized shift solenoid valve, and inspect the O-rings.
- Inspect A/T clutch pressure control solenoid valve C, with the HDS (see A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE C TEST
).
- Inspect the A/T clutch pressure control solenoid valve body gasket, the ATF feed pipes, and the O-rings for wear and damage.
- Check for a loose shift cable at the shift lever and the selector control lever.
- Inspect the ATF temperature sensor O-ring for wear and damage.
- Check for a clogged orifice in the separator plate. If the orifice is clogged, remove it and clean the separator plate orifice.
- Check the stall speed (see STALL SPEED TEST
).
- Check the line pressure (see PRESSURE TEST
).
- Check the ATF strainer for debris. If the strainer is clogged, find the damaged components that caused the debris. If no cause for contamination is found, replace the torque converter.
- Check CPC valve C in the secondary valve body for free movement, and check the valve spring for wear and damage.
- Check shift valves A and E in the main valve body for free movement, and check the valve springs for wear and damage.
- Check shift valve D in the secondary valve body for free movement, and check the valve spring for wear and damage.
- Check the 1st clutch pressure (see PRESSURE TEST
).
- Inspect the 1st clutch for wear and damage.
- Inspect the clutch piston, the clutch piston check valve, and the 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 the plates for wear and damage, and inspect the clutch wave-plate height. If the discs and the plates are worn or damaged, replace them as a set. If the clutch wave-plate height is out of the tolerance, replace the clutch wave-plate. If they are OK, adjust the clearance with the clutch end-plate.
- Check the 1st and 2nd accumulator pistons, the O-rings, and the springs in the accumulator body for wear and damage.
- Check for a stuck 1st check ball in the secondary valve body.
|
| Delayed engagement after shifting from N to R, or excessive shock when shifting |
- Worn engine or transmission mounts
- A/T clutch pressure control solenoid valve C defective
- Shift cable broken or out of adjustment
- Connection between shift cable and transmission or shift lever is worn
- ATF temperature sensor defective
- Reverse CPC valve defective
- ATF strainer clogged
- Foreign material in separator plate orifice
- 5th clutch defective
- Clearance between clutch end-plate and top disc incorrect
|
- Check the engine and transmission mounts.
- Inspect A/T clutch pressure control solenoid valve C with the HDS (see A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE C TEST
).
- Check for a loose shift cable at the shift lever and the transmission control lever.
- Check the stall speed (see STALL SPEED TEST
).
- Check the line pressure (see PRESSURE TEST
).
- Inspect the A/T clutch pressure control solenoid valve body gasket, the ATF feed pipes, and the O-rings for wear and damage.
- Check the reverse CPC valve in the secondary valve body for free movement, and check the valve spring for wear and damage.
- Check the ATF strainer for debris. If the strainer is clogged, find the damaged components that caused the debris. If no cause for contamination is found, replace the torque converter.
- Inspect the ATF temperature sensor O-ring for wear and damage.
- Check for a clogged orifice in the separator plate. If the orifice is clogged, remove it and clean the separator plate orifice.
- Check the stall speed in R (see STALL SPEED TEST
).
- Check the 5th clutch pressure (see PRESSURE TEST
).
- Inspect the 5th clutch for wear and damage.
- Inspect the clutch piston, the clutch piston check valve, and the 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 the plates for wear and damage, and inspect the clutch wave-plate height. If the discs and the plates are worn or damaged, replace them as a set. If the clutch wave-plate height is out of the tolerance, replace the clutch wave-plate. If they are OK, adjust the clearance with the clutch end-plate.
|
| Transmission does not shift |
- Input shaft (mainshaft) speed sensor defective
- Output shaft (countershaft) speed sensor defective
- Engine output low
|
- Check the speed sensor installation.
- Inspect the sensor O-ring for wear and damage.
- Check the fuel pressure (see FUEL PRESSURE TEST
).
- Check for exhaust restriction.
- Check for intake restriction.
- Check the engine rocker arms.
|
| Excessive shock or flares on all upshifts and downshifts |
- Worn engine or transmission mounts
- Input shaft (mainshaft) speed sensor defective
- Output shaft (countershaft) speed sensor defective
- ATF temperature sensor defective
- Foreign material in separator plate orifice
|
- Check the engine and transmission mounts.
- Check the speed sensor installation.
- Inspect the speed sensor O-rings for wear and damage.
- Inspect the ATF temperature sensor O-ring for wear and damage.
- Check for a clogged orifice in the separator plate. If the orifice is clogged, remove it and clean the separator plate orifice.
|
| Excessive shock or flares on 1-2 upshift or 2-1 downshift |
- Worn engine or transmission mounts
- Shift solenoid valve A defective
- Shift solenoid valve C defective
- 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
- Transmission fluid pressure switch A (2nd clutch) defective
- CPC valve A defective
- CPC valve B defective
- CPC valve C defective
- Shift valve C defective
- Shift valve D defective
- Foreign material in separator plate orifice
- 2nd accumulator defective
- 2nd clutch defective
- Clearance between clutch end-plate and top disc incorrect
|
- Check the engine and transmission mounts.
- Inspect the shift solenoid valve function with the HDS (see SHIFT SOLENOID VALVE TEST, REPLACEMENT, AND SHIFT SOLENOID WIRE HARNESS REPLACEMENT
).
- Inspect the shift solenoid valve, and inspect the O-rings.
- Inspect A/T clutch pressure control solenoid valve A or B with the HDS (see A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE A AND B TEST
).
- Inspect A/T clutch pressure control solenoid valve C with the HDS (see A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE C TEST
).
- Check for a seized shift solenoid valve, and inspect the O-rings.
- Inspect the A/T clutch pressure control solenoid valve body gasket, the ATF feed pipes, and the O-rings for wear and damage.
- Check for a clogged orifice in the transmission fluid pressure switch connector. If the orifice is clogged, remove it and clean the connector.
- Check for a clogged orifice in the separator plate. If the orifice is clogged, remove it and clean the separator plate orifice.
- Check CPC valve A in the main valve body for free movement, and check the valve spring for wear and damage.
- Check CPC valves B and C in the secondary valve body for free movement, and check the valve springs for wear and damage.
- Check CPC valves C and D in the secondary valve body for free movement, and check the valve springs for wear and damage.
- Check the 2nd clutch pressure (see PRESSURE TEST
).
- Inspect the 2nd clutch for wear and damage.
- Inspect the clutch piston, the clutch piston check valve, and the 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 the plates for wear and damage, and inspect the clutch wave-plate height. If the discs and the plates are worn or damaged, replace them as a set. If the clutch wave-plate height is out of tolerance, replace the clutch wave-plate. If they are OK, adjust the clearance with the clutch end-plate.
- Check the 2nd accumulator piston, the O-ring, and the spring in the accumulator body for wear and damage.
|
| Excessive shock or flares on 2-3 upshift or 3-2 downshift |
- Worn engine or transmission mounts
- 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
- Transmission fluid pressure switch B (3rd clutch) defective
- Shift fork shaft stuck
- Servo control valve defective
- CPC valve A defective
- CPC valve B defective
- Lock-up shift valve defective
- Foreign material in separator plate orifice
- 2nd accumulator defective
- 3rd accumulator defective
- 2nd check ball stuck
- 2nd clutch defective
- 3rd clutch defective
- Clearance between clutch end-plate and top disc incorrect
|
- Check the engine and transmission mounts.
- Inspect the shift solenoid valve function with the HDS (see SHIFT SOLENOID VALVE TEST, REPLACEMENT, AND SHIFT SOLENOID WIRE HARNESS REPLACEMENT
).
- Inspect A/T clutch pressure control solenoid valve A or B with the HDS (see A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE A AND B TEST
).
- Inspect A/T clutch pressure control solenoid valve C with the HDS (see A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE C TEST
).
- Check for a seized shift solenoid valve, and inspect the O-rings.
- Inspect the A/T clutch pressure control solenoid valve body gasket, the ATF feed pipes, and the O-rings for wear and damage.
- Check for a clogged orifice in the transmission fluid pressure switch connector. If the orifice is clogged, remove it and clean the connector.
- Check for a missing shift fork bolt on the shift fork shaft.
- Check the shift fork shaft detent for wear and damage.
- Check for a stuck servo valve in the regulator valve body, and check the O-ring for wear and damage.
- Check the servo control valve, CPC valve A, and the lock-up shift valve in the main body for free movement, and check the valve springs for wear and damage.
- Check for a clogged orifice in the separator plate. If the orifice is clogged, remove it and clean the separator plate orifice.
- Check CPC valve B in the secondary valve body for free movement, and check the valve spring for wear and damage.
- Check CPC valves B and C in the secondary valve body for free movement, and check the valve spring for wear and damage.
- Check the 2nd and 3rd clutch pressures (see PRESSURE TEST
).
- Inspect the 2nd and 3rd clutches for wear and damage.
- Inspect the clutch piston, the clutch piston check valve, and the 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 the plates for wear and damage, and inspect the clutch wave-plate height. If the discs and the plates are worn or damaged, replace them as a set. If the clutch wave-plate height is out of tolerance, replace the clutch wave-plate. If they are OK, adjust the clearance with the clutch end-plate.
- Check the 2nd and 3rd accumulator pistons, the O-rings, and the springs in the accumulator body for wear and damage.
- Check for a stuck 2nd check ball in the secondary valve body.
|
| Excessive shock or flares on 3-4 upshift or 4-3 downshift |
- 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
- 4th clutch transmission fluid pressure switch defective
- Shift fork shaft stuck
- Servo control valve defective
- Foreign material in separator plate orifice
- 3rd accumulator defective
- 4th accumulator defective
- 3rd clutch defective
- 4th clutch defective
- Clearance between clutch end-plate and top disc incorrect
|
- Inspect A/T clutch pressure control solenoid valve A or B with the HDS (see A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE A AND B TEST
).
- Inspect A/T clutch pressure control solenoid valve C with the HDS (see A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE C TEST
).
- Check the 3rd and 4th clutch pressures (see PRESSURE TEST
).
- Inspect the A/T clutch pressure control solenoid valve body gasket, the ATF feed pipes, and the O-rings for wear and damage.
- Check for a missing shift fork bolt on the shift fork shaft.
- Check the shift fork shaft detent for wear and damage.
- Check for a stuck servo valve in the regulator valve body, and check the O-ring for wear and damage.
- Check the servo control valve in the main valve body for free movement, and check the valve spring for wear and damage.
- Check for a clogged orifice in the transmission fluid pressure switch connector. If the orifice is clogged, remove it and clean the connector.
- Check for a clogged orifice in the separator plate. If the orifice is clogged, remove it and clean the separator plate orifice.
- Inspect the 3rd and 4th clutches for wear and damage.
- Inspect the clutch piston, the clutch piston check valve, and the 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 the plates for wear and damage, and inspect the clutch wave-plate height. If the discs and the plates are worn or damaged, replace them as a set. If the clutch wave-plate height is out of tolerance, replace the clutch wave-plate. If they are OK, adjust the clearance with the clutch end-plate.
- Check the 3rd and 4th accumulator pistons, the O-rings, and the springs in the accumulator body for wear and damage.
|
| Excessive shock or flares on 4-5 upshift or 5-4 downshift |
- 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
- Foreign material in separator plate orifice
- 4th accumulator defective
- 5th accumulator defective
- 4th clutch defective
- 5th clutch defective
- Clearance between clutch end-plate and top disc incorrect
|
- Inspect A/T clutch pressure control solenoid valve A or B with the HDS (see A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE A AND B TEST
).
- Inspect A/T clutch pressure control solenoid valve C with the HDS (see A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE C TEST
).
- Check the stall speed in R (see STALL SPEED TEST
).
- Check the 4th and 5th clutch pressures (see PRESSURE TEST
).
- Inspect the A/T clutch pressure control solenoid valve body gasket, the ATF feed pipes, and the O-rings for wear and damage.
- Check for a clogged orifice in the separator plate. If the orifice is clogged, remove it and clean the separator plate orifice.
- Inspect the 4th and 5th clutches for wear and damage.
- Inspect the clutch piston, the clutch piston check valve, and the 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 the plates for wear and damage, and inspect the clutch wave-plate height. If the discs and the plates are worn or damaged, replace them as a set. If the clutch wave-plate height is out of tolerance, replace the clutch wave-plate. If they are OK, adjust the clearance with the clutch end-plate.
- Check the 4th and 5th accumulator pistons, the O-rings, and the springs in the accumulator body for wear and damage.
|
| Noise from transmission in all shift lever positions |
- ATF pump worn or binding
- ATF strainer clogged
- Mainshaft, countershaft, secondary shaft, and intermediary shaft bearings worn or damaged
- Idler gears worn or damaged
- Thrust washer seized, worn, or damaged
|
- Check the line pressure (see PRESSURE TEST
).
- Improper alignment of the ATF pump and the torque converter housing may cause ATF pump seizure. The symptoms are mostly an rpm-related ticking noise or a high pitched squeak.
- Check the ATF strainer for debris. If the strainer is clogged, find the damaged components that caused the debris. If no cause for contamination is found, replace the torque converter.
- Inspect the differential pinion gears for wear. If the differential pinion gears are worn, replace the differential assembly, replace the ATF strainer, thoroughly clean the transmission, and clean the ATF cooler and lines.
- Replace the torque converter.
- Be careful not to damage the torque converter housing when replacing the main ball bearing. You may also damage the ATF pump when you torque down the main valve body. This will cause ATF pump seizure, use the proper tools.
- Install the main seal flush with the torque converter housing. If you push into the torque converter housing until it bottoms out, it will block the fluid return passage and result in damage.
- Inspect the countershaft and the secondary shaft for wear and damage.
- Inspect the park mechanism at the park lever link, park gear, and 2nd gears.
- Inspect the mainshaft, the countershaft, the secondary shaft, the intermediary shaft, and the idler gears for wear and damage.
- Check the thrust washers on all shafts for seizure, wear, and damage.
|
| Vehicle does not accelerate above 31 mph (50 km/h) |
Torque converter one-way clutch defective |
|
| Vibration in all shift lever positions |
- Drive plate defective or transmission misassembled
- Torque converter defective
- ATF pump worn or binding
|
- Check for a misassembled transmission, and check the drive plate for wear and damage. Replace the drive plate if it is worn or damaged.
- Check the stall speed (see STALL SPEED TEST
).
- Check the line pressure (see PRESSURE TEST
).
- Improper alignment of the ATF pump and the torque converter housing may cause ATF pump seizure. The symptoms are mostly an rpm-related ticking noise or a high pitched squeak.
- Inspect the differential pinion gears for wear. If the differential pinion gears are worn, replace the differential assembly, replace the ATF strainer, thoroughly clean the transmission, and clean the ATF cooler and lines.
- Replace the torque converter.
- Be careful not to damage the torque converter housing when replacing the main ball bearing. You may also damage the ATF pump when you torque down the main valve body. This will cause ATF pump seizure, use the proper tools.
|
| Shift lever does not operate smoothly |
- Transmission range switch defective or out of adjustment
- Shift cable broken, binding, or out of adjustment
- Connection between shift cable and transmission or shift lever is worn
- Manual valve defective
- Selector control shaft worn or damaged
|
- Inspect the transmission range switch. If the transmission range switch fails the inspection, replace the switch. If the inspection is OK, check for proper transmission range switch installation, and adjust the shift cable.
- Check for a loose shift cable at the shift lever and the selector control lever.
- Check the manual valve in the main valve body for wear and damage, and check the manual lever guide pin for wear and damage.
|
| Transmission does not shift into P |
- Shift cable broken, binding, or out of adjustment
- Connection between shift cable and transmission or shift lever is worn
- Park mechanism defective
- Secondary shaft 2nd gear worn or damage
|
- Check for a loose shift cable at the shift lever and the selector control lever.
- Inspect the countershaft and the secondary shaft for wear and damage.
- Inspect the park mechanism at the park lever link, park gear, and 2nd gears.
|
| Torque converter clutch does not operate smoothly; torque converter does not engage or disengage |
- Foreign material in separator plate orifice
- Torque converter clutch piston defective
- Torque converter check valve defective
- Lock-up control valve defective
- Lock-up timing valve defective
|
- Check for a clogged orifice in the separator plate. If the orifice is clogged, remove it and clean the separator plate orifice.
- Replace the torque converter.
- Check the torque converter check valve and the lock-up timing valve in the main valve body for free movement, and check the valve springs for wear and damage.
- Check the lock-up control valve in the regulator valve body for free movement, and check the valve springs for wear and damage.
|
| A/T gear position indicator does not indicate shift lever positions |
- Transmission range switch defective or out of adjustment
- Shift cable broken or out of adjustment
- Connection between shift cable and transmission or shift lever is worn
|
- Inspect the transmission range switch. If the transmission range switch fails the inspection, replace the switch. If the inspection is OK, check for proper transmission range switch installation, and adjust the shift cable.
- Check for a loose shift cable at the shift lever and the selector control lever.
|