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DTC P0729, P0732, P0733, P0734, P0735: 6th, 2nd, 3rd, 4th, 5th Gear Ratio
 
 
 
 
LOGIC FLOW CHARTS (Monitor Sequence)
 
 
DESCRIPTIONS OF MONITOR METHODS <DTC P0729>
After 6th gear is achieved for 2 seconds, the engine runup*1 is detected for 2 seconds.
*1: The actual gear ratio deviates from the target gear ratio to the high engine (turbine) speed.
 
 
MONITOR EXECUTION <DTC P0729>
  • 6th gear driving
 
 
MONITOR EXECUTION CONDITIONS (OTHER MONITOR AND SENSOR) <DTC P0729>
Other Monitor (There is no temporary DTC stored in memory for the item monitored below)
  • P0846: 2-6 brake pressure switch system
  • P0876: High clutch pressure switch system
  • P0988: Low-reverse brake pressure switch system
Sensor (The sensor below is determined to be normal)
  • Input shaft speed sensor
  • Output shaft speed sensor
  • Transmission range switch
  • Lock-up and low-reverse brake linear solenoid
  • Low clutch linear solenoid
  • 2-6 brake linear solenoid
  • 3-5 reverse clutch linear solenoid
  • High clutch linear solenoid
  • Low clutch shift solenoid
  • Low-reverse brake shift solenoid
  • Engine revolution signal
  • CAN communication
 
 
DTC SET CONDITIONS <DTC P0729>
Check Conditions
  • Shift stage: 6th gear.
  • Time after shift changing finish: 2 seconds or more.
Judgment Criteria
  • Gear ratio: 0.771 or more. (2 seconds)
 
 
OBD-II DRIVE CYCLE PATTERN <DTC P0729>
6th gear driving for 5 seconds or more

 
 
DESCRIPTIONS OF MONITOR METHODS <DTC P0732>
After 2nd gear is achieved for 2 seconds, the engine runup*1 is detected for 2 seconds.
*1: The actual gear ratio deviates from the target gear ratio to the high engine (turbine) speed.
 
 
MONITOR EXECUTION <DTC P0732>
  • 2nd gear driving
 
 
MONITOR EXECUTION CONDITIONS (OTHER MONITOR AND SENSOR) <DTC P0732>
Other Monitor (There is no temporary DTC stored in memory for the item monitored below)
  • P0846: 2-6 brake pressure switch system
  • P0876: High clutch pressure switch system
  • P0988: Low-reverse brake pressure switch system
Sensor (The sensor below is determined to be normal)
  • Input shaft speed sensor
  • Output shaft speed sensor
  • Transmission range switch
  • Lock-up and low-reverse brake linear solenoid
  • Low clutch linear solenoid
  • 2-6 brake linear solenoid
  • 3-5 reverse clutch linear solenoid
  • High clutch linear solenoid
  • Low clutch shift solenoid
  • Low-reverse brake shift solenoid
  • Engine revolution signal
  • CAN communication
 
 
DTC SET CONDITIONS <DTC P0732>
Check Conditions
  • Shift stage: 2nd gear.
  • Time after shift changing finish: 2 seconds or more.
Judgment Criteria
  • Gear ratio: 3.302 or more. (2 seconds)
 
 
OBD-II DRIVE CYCLE PATTERN <DTC P0732>
2nd gear driving for 5 seconds or more

 
 
DESCRIPTIONS OF MONITOR METHODS <DTC P0733>
After 3rd gear is achieved for 2 seconds, the engine runup*1 is detected for 2 seconds.
*1: The actual gear ratio deviates from the target gear ratio to the high engine (turbine) speed.
 
 
MONITOR EXECUTION <DTC P0733>
  • 3rd gear driving
 
 
MONITOR EXECUTION CONDITIONS (OTHER MONITOR AND SENSOR) <DTC P0733>
Other Monitor (There is no temporary DTC stored in memory for the item monitored below)
  • P0846: 2-6 brake pressure switch system
  • P0876: High clutch pressure switch system
  • P0988: Low-reverse brake pressure switch system
Sensor (The sensor below is determined to be normal)
  • Input shaft speed sensor
  • Output shaft speed sensor
  • Transmission range switch
  • Lock-up and low-reverse brake linear solenoid
  • Low clutch linear solenoid
  • 2-6 brake linear solenoid
  • 3-5 reverse clutch linear solenoid
  • High clutch linear solenoid
  • Low clutch shift solenoid
  • Low-reverse brake shift solenoid
  • Engine revolution signal
  • CAN communication
 
 
DTC SET CONDITIONS <DTC P0733>
Check Conditions
  • Shift stage: 3rd gear.
  • Time after shift changing finish: 2 seconds or more.
Judgment Criteria
  • Gear ratio: 1.994 or more. (2 seconds)
 
 
OBD-II DRIVE CYCLE PATTERN <DTC P0733>
3rd gear driving for 5 seconds or more

 
 
DESCRIPTIONS OF MONITOR METHODS <DTC P0734>
After 4th gear is achieved for 2 seconds, the engine runup*1 is detected for 2 seconds.
*1: The actual gear ratio deviates from the target gear ratio to the high engine (turbine) speed.
 
 
MONITOR EXECUTION <DTC P0734>
  • 4th gear driving
 
 
MONITOR EXECUTION CONDITIONS (OTHER MONITOR AND SENSOR) <DTC P0734>
Other Monitor (There is no temporary DTC stored in memory for the item monitored below)
  • P0846: 2-6 brake pressure switch system
  • P0876: High clutch pressure switch system
  • P0988: Low-reverse brake pressure switch system
Sensor (The sensor below is determined to be normal)
  • Input shaft speed sensor
  • Output shaft speed sensor
  • Transmission range switch
  • Lock-up and low-reverse brake linear solenoid
  • Low clutch linear solenoid
  • 2-6 brake linear solenoid
  • 3-5 reverse clutch linear solenoid
  • High clutch linear solenoid
  • Low clutch shift solenoid
  • Low-reverse brake shift solenoid
  • Engine revolution signal
  • CAN communication
 
 
DTC SET CONDITIONS <DTC P0734>
Check Conditions
  • Shift stage: 4th gear.
  • Time after shift changing finish: 2 seconds or more.
Judgment Criteria
  • Gear ratio: 1.372 or more. (2 seconds)
 
 
OBD-II DRIVE CYCLE PATTERN <DTC P0734>
4th gear driving for 5 seconds or more

 
 
DESCRIPTIONS OF MONITOR METHODS <DTC P0735>
After 5th gear is achieved for 2 seconds, the engine runup*1 is detected for 2 seconds.
*1: The actual gear ratio deviates from the target gear ratio to the high engine (turbine) speed.
 
 
MONITOR EXECUTION <DTC P0735>
  • 5th gear driving
 
 
MONITOR EXECUTION CONDITIONS (OTHER MONITOR AND SENSOR) <DTC P0735>
Other Monitor (There is no temporary DTC stored in memory for the item monitored below)
  • P0846: 2-6 brake pressure switch system
  • P0876: High clutch pressure switch system
  • P0988: Low-reverse brake pressure switch system
Sensor (The sensor below is determined to be normal)
  • Input shaft speed sensor
  • Output shaft speed sensor
  • Transmission range switch
  • Lock-up and low-reverse brake linear solenoid
  • Low clutch linear solenoid
  • 2-6 brake linear solenoid
  • 3-5 reverse clutch linear solenoid
  • High clutch linear solenoid
  • Low clutch shift solenoid
  • Low-reverse brake shift solenoid
  • Engine revolution signal
  • CAN communication
 
 
DTC SET CONDITIONS <DTC P0735>
Check Conditions
  • Shift stage: 5th gear.
  • Time after shift changing finish: 2 seconds or more.
Judgment Criteria
  • Gear ratio: 1.008 or more. (2 seconds)
 
 
OBD-II DRIVE CYCLE PATTERN <DTC P0735>
5th gear driving for 5 seconds or more

 
 
PROBABLE CAUSES
  • Transaxle assembly powertrain parts failure
  • When the DTC P0715: Input shaft speed sensor system is stored
  • When the DTC P0720: Output shaft speed sensor system is stored
  • When the DTC P0962, P0963: Line pressure linear solenoid valve system is stored
  • When the DTC P0973, P0974: Low clutch linear solenoid valve system is stored
  • When the DTC P0976, P0977: 2-6 brake linear solenoid valve system is stored
  • When the DTC P0979, P0980: 3-5 reverse clutch linear solenoid valve system is stored
  • When the DTC P0982, P0983: High clutch linear solenoid valve system is stored
  • When the DTC P0998, P0999: Low clutch shift solenoid valve system is stored
  • Malfunction of the low clutch, 2-6 brake, 3-5 reverse clutch, high clutch
  • Malfunction of the valve body assembly

 
 
DIAGNOSIS
STEP 1. Check the DTC.
Check that P0715 (input shaft speed sensor) and P0720 (output shaft speed sensor) are set.
Is the DTC stored?
Check and repair the relevant DTC system.
Go to Step 2.
 
STEP 2. Check the DTC.
Check that the DTC other than P0729, P0732, P0733, P0734, P0735 (6th, 2nd, 3rd, 4th, 5th gear ratio) is stored.
Is the DTC stored?
Check and repair the relevant DTC system.
Go to Step 3.
 
STEP 3. Check the transmission fluid properties.
Check the status of the transmission fluid properties (smell, color, fouling).
  • Black: A/T inside damage, seizure
  • Milky: Water intrusion
Is the check result normal?
Go to Step 4.
Remove the A/T from the vehicle, then check and repair the inside.
 
STEP 4. Check the transmission fluid level.
Is the check result normal?
Adjust the transmission fluid level, and then go to Step 5.
Go to Step 5.
 
STEP 5. Check the signals of input shaft speed sensor and output shaft speed sensor.
Check the signals of TCM connector PGA1, PGB1 terminal.
Refer to .
Is the check result normal?
Go to Step 6.
Repair or replace the failure section.
 
STEP 6. Hydraulic pressure test
Refer to .
Is the check result normal?
Go to Step 7.
Remove the A/T from the vehicle, then check and repair the inside.
 
STEP 7. Erase the DTC, and drive the vehicle for a while.
Check that the normal code is displayed.
Is the check result normal?
The procedure is complete.
Return to Step 1.