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Symptom Troubleshooting Index

SYMPTOM TROUBLESHOOTING INDEX

Symptom Probable cause(s) Notes
When you turn the ignition switch to ON (II), the D 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
  • Check the F-CAN communication line for a DTC (see DTC B1168 ).
  • Check the F-CAN communication line by using the gauge control module self-diagnostic function (see THE COMMUNICATION LINE CHECK ).
  • Check the indicator drive circuit in the gauge control module by using gauge control module self-diagnostic function (see SELF-DIAGNOSTIC FUNCTION ).
A/T gear position indicator does not come on while the shift lever is in that position
  • F-CAN communication line error
  • Gauge control module defective
  • PCM defective
  • Transmission range switch defective
M indicator does not come on in M position
  • F-CAN communication line error
  • Gauge control module defective
  • PCM defective
Shift indicator does not work in sequential sportshift mode
  • F-CAN communication line error
  • Gauge control module defective
  • PCM defective
Shift lever cannot be moved from P while you are pressing on the brake pedal
  • Accelerator pedal position sensor circuit
  • Accelerator pedal position sensor defective
  • Brake pedal position switch circuit
  • Brake pedal position switch defective
  • Shift lock solenoid defective
  • Shift lock solenoid control circuit
  • Shift lock solenoid mechanism
  • Throttle body defective
  • Transmission range switch ATP P switch stuck OFF
  • Transmission range switch ATP P switch line opened
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 ON
  • Transmission range switch ATP P line opened
HDS does not communicate with the PCM or the vehicle DLC circuit Troubleshoot the DLC circuit (see DLC CIRCUIT TROUBLESHOOTING ).
Engine runs, but vehicle does not move in any gear
  1. Low ATF level
  2. Shift cable broken or out of adjustment
  3. Connection between shift cable and transmission or body is worn
  4. ATF pump worn or binding
  5. Regulator valve stuck or spring worn
  6. ATF strainer clogged
  7. Foreign material in separator plate orifice
  8. Mainshaft worn or damaged
  9. Countershaft worn or damaged
  10. Final gears worn or damaged
  11. Park mechanism defective
  12. Drive plate worn or damaged
  13. Torque converter worn or damaged
  14. Transmission-to-engine assembly error
  15. Axle disengaged
  • Check the ATF level and check the ATF cooler lines for leakage and loose connections. If necessary, clean the ATF cooler lines.
  • Check for a loose shift cable at the shift lever and the transmission control lever.
  • Improper alignment of ATF pump and torque converter housing may cause ATF pump seizure. The symptoms are mostly an rpm-related ticking noise or a high pitched squeak.
  • Check the line pressure.
  • Check the ATF strainer for debris. If the strainer is clogged, find the damaged components that caused the debris.
  • Inspect the differential pinion gears for wear. If the differential pinion gears are worn, replace the differential assembly, replace the ATF strainer, and 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 result in ATF pump seizure if not detected. 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.
Vehicle moves in R, but not in D, D3, or 1st in M
  1. 1st accumulator defective
  2. Idler gears worn or damaged
  3. 1st clutch defective
  4. 5th clutch defective
  • Check the 1st and 5th clutch pressures.
  • Inspect the secondary shaft and 1st/1st-hold clutch assembly 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 also inspect the clutch wave-plate height. If the discs and plates are worn or damaged, replace the discs and plates as a set. If the wave-plate height is out of tolerance, replace the wave-plate. If the discs and plates are OK, adjust the clearance with the clutch end-plate.
Vehicle moves in M and R, but not in D or D3
  • 1st gear one-way clutch defective
  • 1st gears worn or damaged
  • 1st clutch defective
  • Check the 1st clutch pressure.
  • Inspect the 1st gears and one-way clutch for wear and damage.
  • Inspect the 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 also inspect the clutch wave-plate height. If the discs and plates are worn or damaged, replace the discs and plates as a set. If the wave-plate height is out of tolerance, replace the wave-plate. If the discs and plates are OK, adjust the clearance with the clutch end-plate.
Vehicle moves in D, D3, 2nd in M, and R, but not in 1st in M 1st-hold clutch defective
  • Check the 1st-hold clutch pressure.
  • Inspect the secondary shaft and 1st/1st-hold clutch assembly 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 also inspect the clutch wave-plate height. If the discs and plates are worn or damaged, replace the discs and plates as a set. If the wave-plate height is out of tolerance, replace the wave-plate. If the discs and plates are OK, adjust the clearance with the clutch end-plate.
Vehicle moves in D, D3, 1st in M, and R, but not in 2nd in M
  1. 2nd accumulator defective
  2. 2nd clutch defective
  • Check the 2nd clutch pressure.
  • Inspect the secondary shaft and 2nd clutch assembly 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 also inspect the clutch wave-plate height. If the discs and plates are worn or damaged, replace the discs and plates as a set. If the wave-plate height is out of tolerance, replace the wave-plate. If the discs and plates are OK, adjust the clearance with the clutch end-plate.
Vehicle moves in D, D3, and M, but not in R
  1. Shift fork shaft stuck
  2. 5th accumulator defective
  3. 5th clutch defective
  4. Reverse gears worn or damaged
  5. Reverse idler gear shaft/holder worn or damaged
  • Check the 5th clutch pressure.
  • Check for a missing shift fork bolt on the shift fork shaft.
  • Inspect the reverse selector gear teeth chamfers, and inspect the engagement teeth chamfers of the countershaft 5th gear and 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, reverse idler gear, and countershaft 5th gear.
  • 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 also inspect the clutch wave-plate height. If the discs and plates are worn or damaged, replace the discs and plates as a set. If the wave-plate height is out of tolerance, replace the wave-plate. If the discs and plates are OK, adjust the clearance with the clutch end-plate.
Poor acceleration; flares when starting off in D, D3, and Ft
  1. Low ATF level
  2. Shift cable broken or out of adjustment
  3. Torque converter one-way clutch defective
  4. Stator shaft defective
  5. ATF pump worn or binding
  6. Regulator valve stuck or spring worn
  7. ATF strainer clogged
  8. Torque converter check valve defective
  9. Shift valve E defective
  • Check the ATF level and check the ATF cooler lines for leakage and loose connections. If necessary, clean the ATF cooler lines.
  • Check for a loose shift cable at the shift lever and the transmission control lever.
  • Check the line pressure.
  • Check the ATF strainer for debris. If the strainer is clogged, find the damaged components that caused the debris.
  • Improper alignment of ATF pump and torque converter housing may cause ATF pump seizure. The symptom is mostly an rpm-related ticking noise or a high pitched squeak.
  • 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 result in ATF pump seizure if not detected. Use the proper tools.
Poor acceleration; flares when starting off in D, D3, and R; stall speed high in D and D3
  1. 1st accumulator defective
  2. 1st clutch defective
  • Check the 1st clutch pressure.
  • 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 also inspect the clutch wave-plate height. If the discs and plates are worn or damaged, replace the discs and plates as a set. If the wave-plate height is out of tolerance, replace the wave-plate. If the discs and plates are OK, adjust the clearance with the clutch end-plate.
Poor acceleration; flares when starting off in D, D3, and R; stall speed high in 1st in M 1st-hold clutch defective
  • Check the 1st-hold clutch pressure.
  • Inspect the secondary shaft and 1st/1st-hold clutch assembly 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 also inspect the clutch wave-plate height. If the discs and plates are worn or damaged, replace the discs and plates as a set. If the wave-plate height is out of tolerance, replace the wave-plate. If the discs and plates are OK, adjust the clearance with the clutch end-plate.
Poor acceleration; flares when starting off in D, D3, and R; stall speed high in 2nd in M
  • 2nd accumulator defective
  • 2nd clutch defective
  • Check the 2nd clutch pressure.
  • Inspect the secondary shaft and 2nd clutch assembly 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 also inspect the clutch wave-plate height. If the discs and plates are worn or damaged, replace the discs and plates as a set. If the wave-plate height is out of tolerance, replace the wave-plate. If the discs and plates are OK, adjust the clearance with the clutch end-plate.
Poor acceleration; flares when starting off in D, D3, and R; stall speed high in R
  1. Shift cable broken or out of adjustment
  2. 5th accumulator defective
  3. 5th clutch defective
  • Check for a loose shift cable at the shift lever and the transmission control lever.
  • Check the 5th clutch pressure.
  • 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 also inspect the clutch wave-plate height. If the discs and plates are worn or damaged, replace the discs and plates as a set. If the wave-plate height is out of tolerance, replace the wave-plate. If the discs and plates are OK, adjust the clearance with the clutch end-plate.
Poor acceleration; flares when starting off in D, D3, and R; stall speed low
  1. Engine output low
  2. Torque converter clutch piston defective
 Replace the torque converter.
Engine idle vibration
  1. Low ATF level
  2. Engine output low
  3. Torque converter clutch piston defective
  • Adjust the engine and transmission mounts.
  • Check the ATF level and check the ATF cooler lines for leakage and loose connections. If necessary, clean the ATF cooler lines.
  • Replace the torque converter.
Vehicle moves in N
  1. Excessive ATF
  2. ATF temperature sensor defective
  3. Foreign material in separator plate orifice
  4. Relief valve defective
  5. Lubrication control valve defective
  6. 1st-hold clutch defective
  7. 1st clutch defective
  8. 2nd clutch defective
  9. 3rd clutch defective
  10. 4th clutch defective
  11. 5th clutch defective
  12. Clearance between the top end-plate and top disc incorrect
  13. Needle bearing seized up, worn, or damaged
  • Check the ATF level, and drain the ATF if necessary.
  • Check all clutch pressures.
  • 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 also inspect the clutch wave-plate height. If the discs and plates are worn or damaged, replace the discs and plates as a set. If the wave-plate height is out of tolerance, replace the wave-plate. If the discs and plates are OK, adjust the clearance with the clutch end-plate.
Late shift after shifting from N to D or D3, or excessive shock when shifting
  1. Shift solenoid valve A defective
  2. Shift solenoid valve B defective
  3. Shift solenoid valve C defective
  4. A/T clutch pressure control solenoid valve C defective
  5. Shift cable broken or out of adjustment
  6. Connection between shift cable and transmission or body is worn
  7. ATF temperature sensor defective
  8. CPC valve C defective
  9. Foreign material in separator plate orifice
  10. Shift valve A defective
  11. Shift valve D defective
  12. Shift valve E defective
  13. ATF strainer clogged
  14. 1st accumulator defective
  15. 2nd accumulator defective
  16. 1st check ball stuck
  17. 1st clutch defective
  18. Clutch end plate clearance incorrect
  • Check for a stored DTC, and check for loose connectors.
  • Inspect the O-ring, and check the shift solenoid valve for seizure.
  • Inspect the A/T clutch pressure control solenoid valve body gasket and ATF feed pipes for wear and damage. If the A/T clutch pressure control solenoid valve is stuck, inspect the CPC valves.
  • Check for a loose shift cable at the shift lever and the transmission control lever.
  • Check the 1st clutch pressure.
  • Check the ATF strainer for debris. If the strainer is clogged, find the damaged components that caused the debris.
  • 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 also inspect the clutch wave-plate height. If the discs and plates are worn or damaged, replace the discs and plates as a set. If the wave-plate height is out of tolerance, replace the wave-plate. If the discs and plates are OK, adjust the clearance with the clutch end plate.
Late shift after shifting from N to R, or excessive shock when shifting
  1. A/T clutch pressure control solenoid valve C defective
  2. Shift cable broken or out of adjustment
  3. Connection between shift cable and transmission or body is worn
  4. ATF temperature sensor defective
  5. Reverse CPC valve defective
  6. Foreign material in separator plate orifice
  7. ATF strainer clogged
  8. 5th clutch defective
  9. Clutch end plate clearance incorrect
  • Check for a stored DTC, and check for loose connectors.
  • Inspect the O-ring, and check the shift solenoid valve for seizure.
  • Inspect the A/T clutch pressure control solenoid valve body gasket and ATF feed pipes for wear and damage. If the A/T clutch pressure control solenoid valve is stuck, inspect the CPC valves.
  • Check for a loose shift cable at the shift lever and the transmission control lever.
  • Check the 5th clutch pressure.
  • Check the ATF strainer for debris. If the strainer is clogged, find the damaged components that caused the debris.
  • 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 also inspect the clutch wave-plate height. If the discs and plates are worn or damaged, replace the discs and plates as a set. If the wave-plate height is out of tolerance, replace the wave-plate. If the discs and plates are OK, adjust the clearance with the clutch end plate.
Transmission does not shift
  1. Input shaft (mainshaft) speed sensor defective
  2. Output shaft (countershaft) speed sensor defective
 Check for a stored DTC, and check for loose connectors.
Excessive shock or flares on all upshifts and downshifts
  1. Input shaft (mainshaft) speed sensor defective
  2. Output shaft (countershaft) speed sensor defective
  3. ATF temperature sensor defective
  4. Foreign material in separator plate orifice
 Check for a stored DTC, and check for loose connectors.
Excessive shock or flares on 1-2 upshift or 2-1 downshift
  1. Shift solenoid valve A defective
  2. Shift solenoid valve B defective
  3. Shift solenoid valve C defective
  4. A/T clutch pressure control solenoid valve A defective
  5. A/T clutch pressure control solenoid valve B defective
  6. A/T clutch pressure control solenoid valve C defective
  7. 2nd clutch transmission fluid pressure switch defective
  8. CPC valve A defective
  9. CPC valve B defective
  10. CPC valve C defective
  11. Shift valve C defective
  12. Shift valve D defective
  13. Foreign material in separator plate orifice
  14. 2nd accumulator defective
  15. 2nd clutch defective
  16. Clutch end plate clearance incorrect
  • Check for a stored DTC, and check for loose connectors.
  • Inspect the A/T clutch pressure control solenoid valve body gasket and ATF feed pipes for wear and damage. If the A/T clutch pressure control solenoid valve is stuck, inspect the CPC valves.
  • Check for clogged orifice in the transmission fluid pressure switch connector. If the orifice is clogged, remove it and clean the connector.
  • Check the 1st and 2nd clutch pressures.
  • 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 also inspect the clutch wave-plate height. If the discs and plates are worn or damaged, replace the discs and plates as a set. If the wave-plate height is out of tolerance, replace the wave-plate. If the discs and plates are OK, adjust the clearance with the clutch end plate.
Excessive shock or flares on 2-3 upshift or 3-2 downshift
  1. Shift solenoid valve D defective
  2. A/T clutch pressure control solenoid valve A defective
  3. A/T clutch pressure control solenoid valve B defective
  4. A/T clutch pressure control solenoid valve C defective
  5. 3rd clutch transmission fluid pressure switch defective
  6. Shift fork shaft stuck
  7. CPC valve A defective
  8. CPC valve B defective
  9. Foreign material in separator plate orifice
  10. Servo control valve defective
  11. Lock-upshift valve defective
  12. 2nd accumulator defective
  13. 3rd accumulator defective
  14. 2nd check ball stuck
  15. 2nd clutch defective
  16. 3rd clutch defective
  17. Clutch end plate clearance incorrect
  • Check for a stored DTC, and check for loose connectors.
  • Inspect the O-rings, and check the shift solenoid valve for seizure.
  • Inspect the A/T clutch pressure control solenoid valve body gasket and ATF feed pipes for wear and damage. If the A/T clutch pressure control solenoid valve is stuck, inspect the CPC valves.
  • Check for clogged orifice in the transmission fluid pressure switch connector. If the orifice is clogged, remove it and clean the connector.
  • Check the 2nd and 3rd clutch pressures.
  • 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 also inspect the clutch wave-plate height. If the discs and plates are worn or damaged, replace the discs and plates as a set. If the wave-plate height is out of tolerance, replace the wave-plate. If the discs and plates are OK, adjust the clearance with the clutch end plate.
Excessive shock or flares on 3-4 upshift or 4-3 downshift
  1. A/T clutch pressure control solenoid valve A defective
  2. A/T clutch pressure control solenoid valve B defective
  3. A/T clutch pressure control solenoid valve C defective
  4. 4th clutch transmission fluid pressure switch defective
  5. Shift fork shaft stuck
  6. Foreign material in separator plate orifice
  7. Servo control valve defective
  8. 3rd accumulator defective
  9. 4th accumulator defective
  10. 3rd clutch defective
  11. 4th clutch defective
  12. Clutch end plate clearance incorrect
  • Check for a stored DTC, and check for loose connectors.
  • Inspect the O-rings, and check the shift solenoid valve for seizure.
  • Inspect the A/T clutch pressure control solenoid valve body gasket and ATF feed pipes for wear and damage. If the A/T clutch pressure control solenoid valve is stuck, inspect the CPC valves.
  • Check for clogged orifice in the transmission fluid pressure switch connector. If the orifice is clogged, remove it and clean the connector.
  • Check the 3rd and 4th clutch pressures.
  • 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 also inspect the clutch wave-plate height. If the discs and plates are worn or damaged, replace the discs and plates as a set. If the wave-plate height is out of tolerance, replace the wave-plate. If the discs and plates are OK, adjust the clearance with the clutch end plate.
Excessive shock or flares on 4-5 upshift or 5-4 downshift
  1. A/T clutch pressure control solenoid valve A defective
  2. A/T clutch pressure control solenoid valve B defective
  3. A/T clutch pressure control solenoid valve C defective
  4. Foreign material in separator plate orifice
  5. 4th accumulator defective
  6. 5th accumulator defective
  7. 4th clutch defective
  8. 5th clutch defective
  9. Clutch end plate clearance incorrect
  • Check for a stored DTC, and check for loose connectors.
  • Inspect the O-rings, and check the shift solenoid valve for seizure.
  • Inspect the A/T clutch pressure control solenoid valve body gasket and ATF feed pipes for wear and damage. If the A/T clutch pressure control solenoid valve is stuck, inspect the CPC valves.
  • Check the 4th and 5th clutch pressures.
  • 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 also inspect the clutch wave-plate height. If the discs and plates are worn or damaged, replace the discs and plates as a set. If the wave-plate height is out of tolerance, replace the wave-plate. If the discs and plates are OK, adjust the clearance with the clutch end plate.
Noise from transmission in all shift lever positions
  1. ATF pump worn or binding
  2. ATF strainer clogged
  3. Idler gears worn or damaged
  4. Bearings on mainshaft, countershaft, secondary shaft, and intermediary shaft worn or damaged
  5. Thrust washer seized up, worn, or damaged
  • Improper alignment of ATF pump and 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.
  • 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 result in ATF pump seizure if not detected. Use the proper tools.
Vehicle does not accelerate above 31 mph (50 km/h) Torque converter one-way clutch defective Replace the torque converter.
Vibration in all shift lever positions
  1. ATF pump worn or binding
  2. Torque converter worn or damaged
  3. Drive plate defective or transmission misassembled
  • Adjust the engine and transmission mounts.
  • Check the stall speed.
  • Check the ATF strainer for debris. If the ATF strainer is clogged with particles of steel or aluminum, inspect the ATF pump. If the ATF pump is OK, find the damaged components that caused the debris. If no cause for the contamination is found, replace the torque converter.
Shift lever does not operate smoothly
  1. Transmission range switch defective or out of adjustment
  2. Shift cable broken or out of adjustment
  3. Connection between shift cable and transmission or body is worn
  4. Manual valve defective
  5. Selector control shaft worn or damaged
  • Check for a stored DTC, and check for loose connectors.
  • Inspect the transmission range switch. If the transmission range switch is faulty, replace it. If the transmission range switch is out of adjustment, adjust it and the shift cable.
  • Check for a loose shift cable at the shift lever and the transmission control lever.
Transmission does not shift into P
  1. Shift cable broken or out of adjustment
  2. Connection between shift cable and transmission or body is worn
  3. Park mechanism defective
  4. Secondary shaft 2nd gear worn or damaged
  • Check for a loose shift cable at the shift lever and the transmission control lever.
  • Check the park pawl, control shaft, and park lever link for wear and damage. Check if the control shaft lever pin is disengaged from the manual valve guide.
Torque converter clutch does not disengage
  1. Torque converter clutch piston defective
  2. Lock-up control valve defective
  3. Lock-up timing valve defective
  • Replace the torque converter.
  • Check the lock-up control valves.
Torque converter clutch does not operate smoothly
  1. Torque converter clutch piston defective
  2. Torque converter check valve defective
  3. Lock-up control valve defective
  4. Lock-up timing valve defective
  • Replace the torque converter.
  • Check the lock-up control valves.
Torque converter clutch does not engage
  1. Shift cable broken or out of adjustment
  2. Connection between shift cable and transmission or body is worn
  3. Foreign material in separator plate orifice
  4. Torque converter clutch piston defective
  5. Torque converter check valve defective
  6. Lock-up control valve defective
  7. Lock-up timing valve defective
  • Check for a loose shift cable at the shift lever and the transmission control shaft.
  • Replace the torque converter.
  • Check the lock-up control valves.
A/T gear position indicator does not indicate shift lever positions
  1. Transmission range switch defective or out of adjustment
  2. Shift cable broken or out of adjustment
  3. Connection between shift cable and transmission or body is worn
  • Check for a stored DTC, and check for loose connectors.
  • Inspect the transmission range switch. If the transmission range switch is faulty, replace it. If the transmission range switch is out of adjustment, adjust it and the shift cable.
  • Check for a loose shift cable at the shift lever and the transmission control lever.
Speedometer and odometer do not work Output shaft (countershaft) speed sensor defective Check for a stored DTC, and check for loose connectors.
Engine does not rev to high rpm, and the transmission upshifts at low rpm (engine at normal operating temperature) Engine rocker arms defective
  • Check the engine rocker arms.
  • Check for a restricted or damaged exhaust system.
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