LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Acura >> 2005 >> TL Automatic >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission >> DTC Troubleshooting Index >> 2006 Model
April 5, 2026: LEMON Manuals is launched! Read the announcement.

2006 Model

NOTE: Record all freeze data and review General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION  ) before you troubleshoot.
DTC TROUBLESHOOTING INDEX (3 Of 4)

DTC (1) D Indicator MIL Detection Item Page
P0705 (5-2)(2) Blinks ON Transmission range switch (multiple shift-position input) (see DTC P0705: SHORT IN TRANSMISSION RANGE SWITCH CIRCUIT (MULTIPLE SHIFT-POSITION INPUT) )
P0706 (6-2)(2) OFF ON Transmission range switch (open) (see DTC P0706: OPEN IN TRANSMISSION RANGE SWITCH CIRCUIT )
P0711 (28-5)(2) Blinks OFF ATF temperature sensor (range/performance) (see DTC P0711: PROBLEM IN ATF TEMPERATURE SENSOR CIRCUIT )
P0712 (28-3)(2) Blinks OFF ATF temperature sensor (short) (see DTC P0712: SHORT IN ATF TEMPERATURE SENSOR CIRCUIT )
P0713 (28-4)(2) Blinks OFF ATF temperature sensor (open) (see DTC P0713: OPEN IN ATF TEMPERATURE SENSOR CIRCUIT )
P0716 (15-5)(2) Blinks ON Input shaft (mainshaft) speed sensor (range/performance) (see DTC P0716: PROBLEM IN INPUT SHAFT (MAINSHAFT) SPEED SENSOR CIRCUIT )
P0717 (15-3)(2) Blinks ON Input shaft (mainshaft) speed sensor (no signal input) (see DTC P0717: PROBLEM IN INPUT SHAFT (MAINSHAFT) SPEED SENSOR CIRCUIT (NO SIGNAL INPUT) )
P0718 (15-6)(2) Blinks ON Input shaft (mainshaft) speed sensor (intermittent failure) (see DTC P0718: INPUT SHAFT (MAINSHAFT) SPEED SENSOR INTERMITTENT FAILURE )
P0721 (9-5)(2) Blinks ON Output shaft (countershaft) speed sensor (range/performance) (see DTC P0721: PROBLEM IN OUTPUT SHAFT (COUNTERSHAFT) SPEED SENSOR CIRCUIT )
P0722 (9-3)(2) Blinks ON Output shaft (countershaft) speed sensor (no signal input) (see DTC P0722: PROBLEM IN OUTPUT SHAFT (COUNTERSHAFT) SPEED SENSOR CIRCUIT (NO SIGNAL INPUT) )
P0723 (9-6)(2) Blinks ON Output shaft (countershaft) speed sensor (intermittent failure) (see DTC P0723: OUTPUT SHAFT (COUNTERSHAFT) SPEED SENSOR INTERMITTENT FAILURE )
P0731 (64-1) Blinks OFF 1st gear incorrect ratio (see DTC P0731: PROBLEM IN 1ST CLUTCH AND 1ST CLUTCH HYDRAULIC CIRCUIT )
P0732 (64-2) Blinks OFF 2nd gear incorrect ratio (see DTC P0732: PROBLEM IN 2ND CLUTCH AND 2ND CLUTCH HYDRAULIC CIRCUIT )
P0733 (64-3) Blinks OFF 3rd gear incorrect ratio (see DTC P0733: PROBLEM IN 3RD CLUTCH AND 3RD CLUTCH HYDRAULIC CIRCUIT )
P0734 (64-4) Blinks OFF 4th gear incorrect ratio (see DTC P0734: PROBLEM IN 4TH CLUTCH AND 4TH CLUTCH HYDRAULIC CIRCUIT )
P0735 (64-5) Blinks OFF 5th gear incorrect ratio (see DTC P0735: PROBLEM IN 5TH CLUTCH AND 5TH CLUTCH HYDRAULIC CIRCUIT )
P0741 (40-3) OFF ON Torque converter clutch circuit performance or stuck OFF (see DTC P0741: TORQUE CONVERTER CLUTCH CIRCUIT STUCK OFF )
P0746 (76-3) Blinks ON A/T clutch pressure control solenoid valve A stuck OFF (see DTC P0746: A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE A STUCK OFF )
P0747 (76-4) Blinks ON A/T clutch pressure control solenoid valve A stuck ON (see DTC P0747: A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE A STUCK ON )
P0751 (70-3) Blinks ON Shift solenoid valve A stuck OFF (see DTC P0751: SHIFT SOLENOID VALVE A STUCK OFF )
P0752 (70-4) Blinks ON Shift solenoid valve A stuck ON (see DTC P0752: SHIFT SOLENOID VALVE A STUCK ON )
P0756 (71-3) Blinks ON Shift solenoid valve B stuck OFF (see DTC P0756: SHIFT SOLENOID VALVE B STUCK OFF )
P0757 (71-4) Blinks ON Shift solenoid valve B stuck ON (see DTC P0757: SHIFT SOLENOID VALVE B STUCK ON )
P0761 (72-3) Blinks ON Shift solenoid valve C stuck OFF (see DTC P0761: SHIFT SOLENOID VALVE C STUCK OFF )
P0762 (72-4) Blinks ON Shift solenoid valve C stuck ON (see DTC P0762: SHIFT SOLENOID VALVE C STUCK ON )
P0776 (77-3) Blinks ON A/T clutch pressure control solenoid valve B stuck OFF (see DTC P0776: A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE B STUCK OFF )
P0777 (77-4) Blinks ON A/T clutch pressure control solenoid valve B stuck ON (see DTC P0777: A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE B STUCK ON )
P0780 (45-1) Blinks ON Shift control system (see DTC P0780: PROBLEM IN SHIFT CONTROL SYSTEM )
NOTE:
(1) The DTC in parentheses is the Honda code that you will see when you use the HDS. The first number(s) before the - (hyphen) is the flash code the D indicator indicates when the data link connector (DLC) is connected to the HDS, and the HDS in SCS mode.
(2) This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.
NOTE: Record all freeze data and review General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION  ) before you troubleshoot.
DTC TROUBLESHOOTING INDEX (4 Of 4)

DTC (1) D Indicator MIL Detection Item Page
P0815 (24-5)(2) Blinks ON Transmission gear selection switch upshift switch (short or stuck ON) (see DTC P0815: SHORT IN TRANSMISSION GEAR SELECTION SWITCH UPSHIFT SWITCH CIRCUIT, OR TRANSMISSION GEAR SELECTION SWITCH UPSHIFT SWITCH STUCK ON )
P0816 (24-6)(2) Blinks ON Transmission gear selection switch downshift switch (short or stuck ON) (see DTC P0816: SHORT IN TRANSMISSION GEAR SELECTION SWITCH DOWNSHIFT SWITCH CIRCUIT, OR TRANSMISSION GEAR SELECTION SWITCH DOWNSHIFT SWITCH STUCK ON )
P0847 (26-3)(2) Blinks OFF 3rd clutch transmission fluid pressure switch (short or stuck ON) (see DTC P0847: SHORT IN 3RD CLUTCH TRANSMISSION FLUID PRESSURE SWITCH CIRCUIT, OR 3RD CLUTCH TRANSMISSION FLUID PRESSURE SWITCH STUCK ON )
P0848 (26-4)(2) Blinks OFF 3rd clutch transmission fluid pressure switch (open or stuck OFF) (see DTC P0848: OPEN IN 3RD CLUTCH TRANSMISSION FLUID PRESSURE SWITCH CIRCUIT, OR 3RD CLUTCH TRANSMISSION FLUID PRESSURE SWITCH STUCK OFF )
P0872 (27-3)(2) Blinks OFF 4th clutch transmission fluid pressure switch (short or stuck ON) (see DTC P0872: SHORT IN 4TH CLUTCH TRANSMISSION FLUID PRESSURE SWITCH CIRCUIT, OR 4TH CLUTCH TRANSMISSION FLUID PRESSURE SWITCH STUCK ON )
P0873 (27-4)(2) Blinks OFF 4th clutch transmission fluid pressure switch (open or stuck OFF) (see DTC P0873: OPEN IN 4TH CLUTCH TRANSMISSION FLUID PRESSURE SWITCH CIRCUIT, OR 4TH CLUTCH TRANSMISSION FLUID PRESSURE SWITCH STUCK OFF )
P0957 (24-3)(2) Blinks ON Transmission gear selection switch (short or stuck ON) (see DTC P0957: SHORT IN TRANSMISSION GEAR SELECTION SWITCH CIRCUIT, OR TRANSMISSION GEAR SELECTION SWITCH STUCK ON )
P0958 (24-4)(2) Blinks ON Transmission gear selection switch (open or stuck OFF) (see DTC P0958: OPEN IN TRANSMISSION GEAR SELECTION SWITCH CIRCUIT, OR TRANSMISSION GEAR SELECTION SWITCH STUCK OFF )
P0962 (16-3)(2) Blinks ON A/T clutch pressure control solenoid valve A (open/short) (see DTC P0962: PROBLEM IN A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE A CIRCUIT )
P0963 (16-4)(2) Blinks ON A/T clutch pressure control solenoid valve A (see DTC P0963: PROBLEM IN A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE A )
P0966 (23-3)(2) Blinks ON A/T clutch pressure control solenoid valve B (open/short) (see DTC P0966: PROBLEM IN A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE B CIRCUIT )
P0967 (23-4)(2) Blinks ON A/T clutch pressure control solenoid valve B (see DTC P0967: PROBLEM IN A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE B )
P0970 (29-3)(2) Blinks ON A/T clutch pressure control solenoid valve C (open/short) (see DTC P0970: PROBLEM IN A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE C CIRCUIT )
P0971 (29-4)(2) Blinks ON A/T clutch pressure control solenoid valve C (see DTC P0971: PROBLEM IN A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE C )
P0973 (7-3)(2) Blinks ON Shift solenoid valve A (short) (see DTC P0973: SHORT IN SHIFT SOLENOID VALVE A CIRCUIT )
P0974 (7-4)(2) Blinks ON Shift solenoid valve A (open) (see DTC P0974: OPEN IN SHIFT SOLENOID VALVE A CIRCUIT )
P0976 (8-3)(2) Blinks ON Shift solenoid valve B (short) (see DTC P0976: SHORT IN SHIFT SOLENOID VALVE B CIRCUIT )
P0977 (8-4)(2) Blinks ON Shift solenoid valve B (open) (see DTC P0977: OPEN IN SHIFT SOLENOID VALVE B CIRCUIT )
P0979 (22-3)(2) Blinks ON Shift solenoid valve C (short) (see DTC P0979: SHORT IN SHIFT SOLENOID VALVE C CIRCUIT )
P0980 (22-4)(2) Blinks ON Shift solenoid valve C (open) (see DTC P0980: OPEN IN SHIFT SOLENOID VALVE C CIRCUIT )
P2769 (1-3)(2) Blinks ON Torque converter clutch solenoid valve circuit (short) (see DTC P2769: SHORT IN TORQUE CONVERTER CLUTCH SOLENOID VALVE CIRCUIT )
P2770 (1-4)(2) Blinks ON Torque converter clutch solenoid valve circuit (open) (see DTC P2770: OPEN IN TORQUE CONVERTER CLUTCH SOLENOID VALVE CIRCUIT )
NOTE:
(1) The DTC in parentheses is the Honda code that you will see when you use the HDS. The first number(s) before the - (hyphen) is the flash code the D indicator indicates when the data link connector (DLC) is connected to the HDS, and the HDS in SCS mode.
(2) This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.
SYMPTOM TROUBLESHOOTING INDEX

Symptom Probable cause(s) Notes
When you turn the ignition switch ON (II), the D indicator comes on and stays on in all shift lever positions, or it never comes on at all
  1. F-CAN communication line defective
  2. Gauge control module defective
  3. MET INH line defective
 Check the A/T gear position indicator circuit
M indicator does not work
  1. F-CAN communication line defective
  2. Gauge control module defective
  3. MET INH line defective
 Check the A/T gear position indicator circuit
Shift lever cannot be moved from P while you are pressing on the brake pedal A problem in the shift lock system of the interlock system Check the interlock system - shift lock system circuit (see SHIFT LOCK SYSTEM/REVERSE LOCK SYSTEM CIRCUIT TROUBLESHOOTING  ).
Shift lever cannot pass through R from N A problem in the reverse lock system of the interlock system Check the interlock system - shift lock system/reverse lock system circuit (see SHIFT LOCK SYSTEM/REVERSE LOCK SYSTEM CIRCUIT TROUBLESHOOTING  ).
Ignition switch cannot be moved from ACC (1) to LOCK (0) (key is pushed in, shift lever in P) A problem in the key interlock system of the interlock system Check the interlock system - key interlock system circuit (see KEY INTERLOCK SYSTEM 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. Mainshaft worn or damaged
  8. Final gears worn or damaged
  9. Transmission-to-engine assembly error
  10. Axle disengaged
  • Check the ATF level, and check the ATF cooler lines for leakage and loose connections.
  • 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 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 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, and thoroughly clean the transmission. 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, L, or M in 1st
  1. 1st gear one-way clutch defective
  2. 1st accumulator defective
  3. 1st clutch defective
  • Check the 1st clutch pressure.
  • Inspect the secondary shaft and 1st/1st-hold/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 clutch end-plate-to-top disc clearance. If the clearance is out of tolerance, inspect the clutch discs and plates for wear and damage. If the discs and plates are worn and damaged, replace them as a set. If they are OK, adjust the clutch end-plate clearance.
Vehicle moves in D, M, and R, but not in L
  1. 1st-hold accumulator defective
  2. 1st-hold clutch defective
  • Check the 1st-hold clutch pressure.
  • Inspect the secondary shaft and 1st/1st-hold/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 clutch end-plate-to-top-disc clearance. If the clearance is out of tolerance, inspect the clutch discs and plates for wear and damage. If the discs and plates are worn or damaged, replace them as a set. If they are OK, adjust the clutch end plate clearance.
Vehicle moves in D, L, and M, but not in R (or moves forward in R)
  1. Shift fork shaft stuck
  2. Modulator valve defective
  3. Reverse CPC valve defective
  4. 5th accumulator defective
  5. 5th clutch defective
  6. Reverse gears worn or damaged
  • Check the line pressure and 5th clutch pressure.
  • Check for a missing shift fork bolt on the shift fork shaft.
  • 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.
  • Inspect the reverse selector gear teeth chamfers, and inspect 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.
  • If the 5th clutch feed pipe guide in the end cover is scored by the mainshaft, inspect the ball bearing for excessive movement in the transmission housing. If the ball bearing is OK, replace the end cover as it is dented. The O-ring under the guide is probably worn.
  • Replace the mainshaft if the bushing for the 4th and 5th clutch feed pipes are loose or damaged. If the 5th clutch feed pipe is damaged or out of round, replace the end cover.
  • Inspect the clutch piston, clutch piston check valve, and O-rings. Check the spring retainer for wear and damage. Inspect the clutch end-plate-to-top-disc clearance. If the clearance is out of tolerance, inspect the clutch discs and plates for wear and damage. If the discs and plates are worn or damaged, replace them as a set. If they are OK, adjust the clearance with the clutch end-plate.
Poor acceleration; flares when starting off in D; stall speed high in D and L
  1. Low ATF level
  2. Shift cable broken or out of adjustment
  3. ATF pump worn or binding
  4. Regulator valve stuck or spring worn
  5. ATF strainer clogged
  6. Torque converter check valve defective
  • Check the ATF level, and check the ATF cooler lines for leakage and loose connections.
  • Check for a loose shift cable at the shift lever and the transmission control lever.
  • Check the line pressure.
  • Improper alignment of ATF pump and torque converter housing may cause ATF pump seizure. The symptom is mostly an rpm-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 R; stall speed high in R
  1. Shift cable broken or out of adjustment
  2. 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 clutch end-plate-to-top-disc clearance. If the clearance is out of tolerance, inspect the clutch discs and plates for wear and damage. If the discs and plates are worn or damaged, replace them as a set. If they are OK, adjust the clutch end-plate clearance.
Poor acceleration; stall speed low
  1. Torque converter clutch solenoid valve defective
  2. Engine output low
  3. Torque converter clutch piston defective
  4. Lock-up shift valve defective
 Check for a stuck lock-up valve in the valve body.
Engine idle vibration
  1. Low ATF level
  2. Torque converter clutch solenoid valve defective
  3. Drive plate defective or transmission misassembled
  4. Engine output low
  5. Torque converter clutch piston defective
  6. ATF pump worn or binding
  7. Lock-up shift valve defective
  • Set idle rpm in gear to the specified idle speed. If it is still no good, adjust the engine and transmission mounts.
  • Check the ATF level, and check the ATF cooler lines for leakage and loose connections.
Vehicle moves in N
  1. Excessive ATF
  2. Foreign material in separator plate orifice
  3. Relief valve defective
  4. 1st-hold clutch defective
  5. 1st clutch defective
  6. 2nd clutch defective
  7. 3rd clutch defective
  8. 4th clutch defective
  9. 5th clutch defective
  10. Clutch and plate clearance incorrect
  11. Needle bearing seized up, worn, or damaged
  12. Thrust washer seized up, worn, or damaged
  • Check the ATF level, and drain the ATF if it is over filled.
  • Inspect the clutch piston, clutch piston check valve, and O-rings. Check the spring retainer for wear and damage. Inspect the clutch end-plate-to-top-disc clearance. If the clearance is out of tolerance, inspect the clutch discs and plates for wear and damage. If the discs and plates are worn or damaged, replace them as a set. If they are OK, adjust the clutch end-plate clearance.
  • Check all clutch pressures.
Late shift after shifting from N to D, or excessive shock when shifted into D
  1. Shift solenoid valve C 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. Shift cable broken or out of adjustment
  6. Connection between shift cable and transmission or body is worn
  7. Input shaft (mainshaft) speed sensor defective
  8. Output shaft (countershaft) speed sensor defective
  9. ATF temperature sensor defective
  10. CPC valve C stuck
  11. Foreign material in separator plate orifice
  12. Shift valve C defective
  13. Shift valve E defective
  14. Servo control valve defective
  15. 1st accumulator defective
  16. 1st check ball stuck
  17. 1st clutch defective
  • 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 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.
  • 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 clutch end-plate-to-top-disc clearance. If the clearance is out of tolerance, inspect the clutch discs and plates for wear and damage. If the discs and plates are worn or damaged, replace them as a set. If they are OK, adjust the clutch end-plate clearance.
Late shift after shifting from N to R
  1. Shift solenoid valve C 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. Shift cable broken or out of adjustment
  6. Connection between shift cable and transmission or body is worn
  7. Input shaft (mainshaft) speed sensor defective
  8. Output shaft (countershaft) speed sensor defective
  9. ATF temperature sensor defective
  10. Shift fork shaft stuck
  11. CPC valve C stuck
  12. Reverse CPC valve defective
  13. Foreign material in separator plate orifice
  14. Shift valve E defective
  15. 5th accumulator defective
  16. 5th clutch defective
  • 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 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.
  • 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 clutch end-plate-to-top-disc clearance. If the clearance is out of tolerance, inspect the clutch discs and plates for wear and damage. If the discs and plates are worn or damaged, replace them as a set. If they are OK, adjust the clutch end-plate clearance.
The A/T does not shift
  1. Input shaft (mainshaft) speed sensor defective
  2. Output shaft (countershaft) speed sensor defective
  3. Modulator valve defective
  • Check for a stored DTC, and check for loose connectors.
  • Check the line pressure.
  • Check the input shaft (mainshaft) and output shaft (countershaft) speed sensor installation.
Erratic shifting: fails to shift in D; starts off in 5th
  1. Shift solenoid valve B defective
  2. Shift valve B defective
  • Check for a stored DTC, and check for loose connectors.
  • Inspect the O-ring, and check the shift solenoid valve for seizure.
Erratic shifting: fails to shift in D; starts off in 3rd
  1. Shift solenoid valve A defective
  2. Shift valve A defective
  • Check for a stored DTC, and check for loose connectors.
  • Inspect the O-ring, and check the shift solenoid valve for seizure.
Excessive shock or flares on all upshifts and downshifts
  1. A/T clutch pressure control solenoid valve A defective
  2. A/T clutch pressure control solenoid valve B defective
  3. Input shaft (mainshaft) speed sensor defective
  4. Output shaft (countershaft) speed sensor defective
  5. ATF temperature sensor defective
  6. CPC valve A defective
  7. Foreign material in separator plate orifice
  • 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.
  • Inspect the sensor O-rings.
Excessive shock or flares on 1-2 upshift or 2-1 downshift
  1. Foreign material in separator plate orifice
  2. 2nd accumulator defective
  3. 2nd check ball stuck
  4. 2nd clutch defective
  • 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 clutch end-plate-to-top-disc clearance. If the clearance is out of tolerance, inspect the clutch discs and plates for wear and damage. If the discs and plates are worn or damaged, replace them as a set. If they are OK, adjust the clutch end-plate clearance.
Excessive shock or flares on 2-3 upshift or 3-2 downshift
  1. Shift solenoid valve C defective
  2. A/T clutch pressure control solenoid valve A defective
  3. A/T clutch pressure control solenoid valve B defective
  4. 3rd clutch transmission fluid pressure switch defective
  5. CPC valve B defective
  6. Foreign material in separator plate orifice
  7. Shift valve C defective
  8. 2nd accumulator defective
  9. 3rd accumulator defective
  10. 2nd check ball stuck
  11. 2nd clutch defective
  12. 3rd clutch defective
  • Check for a stored DTC, and check for loose connectors.
  • Inspect the O-rings, and check the shift solenoid valve for seizure.
  • 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 clutch end-plate-to-top-disc clearance. If the clearance is out of tolerance, inspect the clutch discs and plates for wear and damage. If the discs and plates are worn or damaged, replace them as a set. If they are OK, adjust the clutch end-plate clearance.
Excessive shock or flares on 3-4 upshift or 4-3 downshift
  1. Shift solenoid valve C defective
  2. A/T clutch pressure control solenoid valve A defective
  3. A/T clutch pressure control solenoid valve B defective
  4. 4th clutch transmission fluid pressure switch defective
  5. CPC valve B defective
  6. Foreign material in separator plate orifice
  7. Shift valve C defective
  8. 3rd accumulator defective
  9. 4th accumulator defective
  10. 3rd clutch defective
  11. 4th clutch defective
  • Check for a stored DTC, and check for loose connectors.
  • Inspect the O-rings, and check the shift solenoid valve for seizure.
  • 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 clutch end-plate-to-top-disc clearance. If the clearance is out of tolerance, inspect the clutch discs and plates for wear and damage. If the discs and plates are worn or damaged, replace them as a set. If they are OK, adjust the clutch end-plate clearance.
Excessive shock or flares on 4-5 upshift or 5-4 downshift
  1. Shift solenoid valve C 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. CPC valve B defective
  6. CPC valve C defective
  7. Foreign material in separator plate orifice
  8. Shift valve C defective
  9. Shift valve E defective
  10. Kick-down valve or kick-down short valve defective
  11. 4th accumulator defective
  12. 5th accumulator defective
  13. 4th clutch defective
  14. 5th clutch defective
  • Check for a stored DTC, and check for loose connectors.
  • Inspect the O-rings, and check the shift solenoid valve for seizure.
  • 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 clutch end-plate-to-top-disc clearance. If the clearance is out of tolerance, inspect the clutch discs and plates for wear and damage. If the discs and plates are worn or damaged, replace them as a set. If they are OK, adjust the clutch end-plate clearance.
Noise from transmission in all shift lever positions
  1. ATF pump worn or binding
  2. Torque converter housing or transmission housing bearing 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.
  • Inspect the contact of the countershaft and secondary shaft with the bearings. Check the ATF guide plates for damage and wear. Inspect the 1st clutch feed pipe for damage and out of round. If the 1st clutch feed pipe is damaged or out of round, replace it. Replace the secondary shaft if the bushing for the 1st clutch feed pipe is damaged or out of round.
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 Drive plate defective or transmission misassembled
  • Check for a misinstalled/damaged drive plate.
  • Set idle rpm in gear to the specified idle speed. If still no good, adjust the engine mounts.
  • Check the stall speed.
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
  • 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
  • Check for a loose shift cable at the shift lever and the transmission control lever.
  • Check the park pawl spring installation and the park lever spring installation. If installation is incorrect, install the spring correctly. Make sure that the park lever stop is not installed upside down. Check the distance between the park pawl shaft and the park lever roller pin. If the distance is out of tolerance, adjust the distance with the park lever stop.
Torque converter clutch does not disengage
  1. Torque converter clutch solenoid valve defective
  2. A/T clutch pressure control solenoid valve C defective
  3. Torque converter clutch piston defective
  4. Lock-up shift valve defective
  5. Lock-up control valve defective
  6. Lock-up timing valve defective
  • Check for a stored DTC, and check for loose connectors.
  • Inspect the A/T clutch pressure control solenoid valve body gasket for wear and damage. If the A/T clutch pressure control solenoid valve is stuck, inspect the CPC valves.
Torque converter clutch does not operate smoothly
  1. Torque converter clutch solenoid valve defective
  2. A/T clutch pressure control solenoid valve C defective
  3. Torque converter clutch piston defective
  4. Torque converter check valve defective
  5. Lock-up shift valve defective
  6. Lock-up control valve defective
  7. Lock-up timing valve defective
  • Check for a stored DTC, and check for loose connectors.
  • Inspect the A/T clutch pressure control solenoid valve body gasket for wear and damage. If the A/T clutch pressure control solenoid valve is stuck, inspect the CPC valves.
  • Center all engine mounts.
Torque converter clutch does not engage
  1. Torque converter clutch solenoid valve defective
  2. A/T clutch pressure control solenoid valve C defective
  3. Input shaft (mainshaft) speed sensor defective
  4. Output shaft (countershaft) speed sensor defective
  5. Torque converter clutch piston defective
  6. Torque converter check valve defective
  7. Lock-up shift valve defective
  8. Lock-up control valve defective
  • Check for a stored DTC, and check for loose connectors.
  • Inspect the A/T clutch pressure control solenoid valve body gasket for wear and damage. If the A/T clutch pressure control solenoid valve is stuck, inspect the CPC 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.
The engine does not rev to high rpm, and the transmission upshifts at low rpm (engine at normal operating temperature) VTEC rocker arms defective Check the engine rocker arms.
scientia non olet · About LEMON Manuals