DTC P0746: Abnormality in Hydraulic Control System Function

DIAGNOSTIC FUNCTION

DESCRIPTIONS OF MONITOR METHODS

• The status with the pulley ratio of 3.5 or more continues for 0.1 second or with the pulley ratio of 2.7 or more continues for 0.2 second.
  

MONITOR EXECUTION

• transmission range:D
  
• Throttle valve opening : 1/8 or more
  
• Engine speed : 450 r/min or more
  
• CVT fluid temperature : from 20 to 180°C (68~356°F)
  

MONITOR EXECUTION CONDITIONS (OTHER MONITOR AND SENSOR)

• P0741: Abnormality in lockup function
  
• P0841: Abnormality in line pressure sensor function
  

• Not applicable
  

LOGIC FLOW CHARTS (Monitor Sequence)

DTC SET CONDITIONS

• Transmission range switch position: D.
  
• Throttle position sensor voltage: 1.37 volts or more.
  
• Engine speed: 450 r/min or more.
  
• Transmission fluid temperature: 20°C (68°F) or more.
  
• Transmission fluid temperature: 180°C (356°F) or less.
  
• Voltage of battery: 9 volts or more.
  
• Voltage of battery: 16 volts or less.
  

• Pulley ratio (primary pulley ratio/secondary pulley ratio): more than 3.5. (0.1 second)
  
• Pulley ratio (primary pulley ratio/secondary pulley ratio): more than 2.7. (0.2 second)
  

OBD-II DRIVE CYCLE PATTERN

PROBABLE CAUSES

• Abnormal line pressure
  
• Malfunction of TCM
  

	Carry out the appropriate troubleshooting.

	Go to Step 2.

Item 33: Line pressure SOL. output current (Refer to Data List Reference Table .)

	Intermittent malfunction

	Go to Step 3.

Carry out "hydraulic test"(Refer to ).

	Go to Step 4.

	Repair according to the hydraulic pressure test diagnosis table.

	Intermittent malfunction

	Replace TCM.