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DTC P0715: Malfunction of Primary Pulley Speed Sensor
 
 

 
 
 
 
DIAGNOSTIC FUNCTION
TCM determines that the malfunction is present when the primary pulley speed sensor value changes abruptly or when there is a discrepancy between this sensor and other sensors in sensor reading.
 
 
DESCRIPTIONS OF MONITOR METHODS
  • The status with the secondary pulley speed of 500 r/min or more and with the primary pulley speed of 150 r/min or less continues for 5 seconds.
  • When the primary pulley speed has dropped abruptly from 1,000 r/min or more to 300 r/min or less, and then it keeps 300 r/min or less for 0.5 seconds continuously.
 
 
MONITOR EXECUTION
  • transmission range: D
  • Throttle valve opening: 1/8 or more
  • Engine speed: 450 r/min or more
  • Voltage of battery: 10 volts or more.
 
 
MONITOR EXECUTION CONDITIONS (OTHER MONITOR AND SENSOR)
Other Monitor (There is no temporary DTC stored in memory for the item monitored below)
  • P0712, P0713: Malfunction of the transmission fluid temperature sensor
  • P0720: Malfunction of secondary pulley speed sensor
  • P0725: Malfunction of engine speed
  • P0740: Malfunction of lockup solenoid valve
  • P0745: Malfunction of line pressure solenoid valve
  • P0840: Malfunction of secondary pressure sensor
  • P1723: Abnormality in speed sensor system function
  • P1777: Malfunction of stepper motor
Sensor (The sensor below is determined to be normal)
  • Transmission fluid temperature sensor
  • Secondary pulley speed sensor
 
 
LOGIC FLOW CHARTS (Monitor Sequence-Input Rationality-Low (Open/Low revolution))
 
 
LOGIC FLOW CHARTS (Monitor Sequence-Input Open Circuit)
 
 
LOGIC FLOW CHARTS (Monitor Sequence-Input Other Rationality)
 
 
DTC SET CONDITIONS
Check Conditions <Input Rationality-Low (Open/Low revolution)>
  • Transmission range switch position: D.
  • Secondary pulley speed: 500 r/min or more.
  • Accelerator pedal position sensor voltage: 1.37 volts or more.
  • Engine speed: 450 r/min or more.
  • Voltage of battery: 9 volts or more.
  • Voltage of battery: 16 volts or less.
Check Conditions <Input Open Circuit>
  • Transmission range switch position: D.
  • Primary pulley speed at 10 millisecond before: 1,000 r/min or more.
  • Accelerator pedal position sensor voltage: 1.37 volts or more.
  • Engine speed: 450 r/min or more.
  • Voltage of battery: 9 volts or more.
  • Voltage of battery: 16 volts or less.
Check Conditions <Input Other Rationality>
  • Transmission range switch position: D.
  • Accelerator pedal position sensor voltage: 1.37 volts or more.
  • Engine speed: 450 r/min or more.
  • Voltage of battery: 9 volts or more.
  • Voltage of battery: 16 volts or less.
  • Torque converter clutch status: Engaged.
JUDGMENT CRITERIA <Input Rationality-Low (Open/Low revolution)>
  • Primary pulley speed [secondary pulley speed: 500 r/min or more]: 150 r/min or less. (5 seconds)
JUDGMENT CRITERIA <Input Open Circuit>
  • Primary pulley speed [Primary pulley speed at 10 millisecond before: 1,000 r/min or more]: 300 r/min or less. (0.5 second)
JUDGMENT CRITERIA <Input Other Rationality>
  • Primary pulley speed - Engine speed: 1,000 r/min or more. (5 seconds)
  • Primary pulley speed - Turbine speed: Turbine speed/2 or 1,000 r/min or more. (5 seconds)
 
 
OBD-II DRIVE CYCLE PATTERN
Transmission range: D (Drive the vehicle for 20 seconds or more while the accelerator opening angle is 20% or more)
 
 
PROBABLE CAUSES
  • Malfunction of primary pulley speed sensor
  • Damaged wiring harness and connectors
  • Malfunction of TCM
 
 
DIAGNOSIS
STEP 1. Scan tool data list
Item 1: Primary speed sensor signal (Refer to Data List Reference Table .)
Is the check result normal?
Intermittent malfunction
Go to Step 2.
 
STEP 2. Check the following connector:
  • B-121 Primary pulley speed sensor connector
  • C-130 TCM connector
  • A-16, A-17 Intermediate connector
Check the terminals for a contact status problem and internal short circuit.
Is the check result normal?
Go to Step 3.
Repair the defective connector.
 
STEP 3. Check for open circuit in the wiring harness between the primary pulley speed sensor connector and the TCM connector
Between B-121 primary pulley speed sensor connector (terminal No.3) and C-130 TCM connector (terminal No.48)
Is the check result normal?
Go to Step 4.
Repair the wiring harness.
 
STEP 4. Check for open circuit and short to ground in wiring harness between the primary pulley speed sensor connector and the TCM connector
Between B-121 primary pulley speed sensor connector (terminal No.2) and C-130 TCM connector (terminal No.37)
Is the check result normal?
Go to Step 5.
Repair the wiring harness.
 
STEP 5. Check for open circuit in the wiring harness between the CVT control relay and the primary pulley speed sensor connector.
Between A-69X CVT control relay (terminal No.3) and B-121 primary pulley speed sensor connector (terminal No.1)
Is the check result normal?
Go to Step 6.
Repair the wiring harness.
 
STEP 6. Primary pulley speed sensor check
Visually check the tip of the sensor for foreign materials or damage.
Is the check result normal?
Go to Step 7.
Repair.
 
STEP 7. Diagnostic trouble code recheck after replacing the primary pulley speed sensor
Is the check result normal?
The procedure is complete.
Replace TCM.