GENERAL DESCRIPTION
Transaxle range switch sends information of the shift lever position to the PCM by using 12V (the battery voltage). By detecting the position of the transaxle range, to start the engine is possible only when the gear position is in the parking or neutral position and the back up lamp is on only in reverse position.
DTC DESCRIPTION
The PCM sets this code when the transaxle range switch has no output signal for more than 30 seconds.
Refer to DTC P0707 .
The PCM sets this code when the transaxle range switch has two or more output signals for more than 30 seconds.
The oil temperature sensor is installed in the valve body and uses a thermistor that resistance changes by temperature change. PCM offers 5V as a reference voltage and the output voltage changes according to the ATF's temperature. The oil temperature sensor signal is important information in detecting torque converter clutch operation or non-operation area, the oil temperature sensor's variable controlling and oil pressure's controlling at shifting.
PCM displays this code if it detects the condition below for more than 1 second. PCM regards that the ATF's oil temperature is 85°C (185°F) since this code is sensed.
Refer to DTC P0711 .
PCM displays this code if it detects the condition below for more than 10 seconds. PCM recognizes that the oil temperature is 85°C (185°F) since this code is sensed.
Refer to DTC P0711 .
Refer to DTC P0711 .
The input (turbine) speed sensor outputs pulse-signals according to the revolutions of the input shaft of the transmission. The PCM determines the input shaft speed by counting the frequency of the pulses. This value is mainly used to control the optimum fluid pressure during shifting.
The PCM sets this code if an output pulse-signal is not detected from the input speed sensor, when the vehicle is running faster than 30 km/h. The Fail-Safe function will be set by the PCM if this code is detected.
The output speed sensor calculates the number of rotations of the transfer drive gear, which means that the sensor calculates the frequency of electric signal that is occurred at the transfer drive gear's rotating. The signal is inputted to the PCM and is used as the main signal which decides the optimum gear position with TPS signal.
The PCM sets this code if the calculated value of the pulse-signal from the output speed sensor is noticeably different from the calculated value from vehicle speed sensor, when the vehicle is running faster than 30 km/h. The PCM will initiate the fail safe function if this code is detected.
The input shaft speed in gear 1 range should be the similar to the value that is what the gear 1 ratio and the output shaft speed are multiplied. For example, if the output shaft speed is 1,000 rpm and the gear 1 ratio is 3.789, the input shaft speed may be about 3,789 rpm.
This code is displayed if the input shaft speed does not conform with the value which is what the output shaft speed and the gear 1 ratio are multiple. This is more probably caused by a mechanical defect of adherence of control valves or a breakdown of solenoid controlled valves etc. than a electrical defect.
The input shaft speed in gear 2 range should be the similar to the value that is what the gear 2 ratio and the output shaft speed are multiple. For example, if the output shaft speed is 1,000 rpm and the gear 2 ratio is 2.064, the input shaft speed may be about 2,064 rpm.
This code is displayed if the input shaft speed does not conform with the value which is what the output shaft speed and the gear 2 ratio are multiple. This is mainer caused by a mechanical defect of adherence of control valves or a breakdown of solenoid controlled valves etc. than a electrical defect.
The input shaft speed in gear 3 range should be the similar to the value that is what the gear 3 ratio and the output shaft speed are multiple. For example, if the output shaft speed is 1,000 rpm and the gear 3 ratio is 1.421, the input shaft speed will be about 1,421 rpm.
This code is displayed if the input shaft speed does not conform with the value which is what the output shaft speed and the gear 3 ratio are multiple. This is most likely caused by a mechanical defect of adherence of control valves or a breakdown of solenoid controlled valves etc. than a electrical defect.
The input shaft speed in gear 4 range should be the similar to the value that is what the gear 4 ratio and the output shaft speed are multiple. For example, if the output shaft speed is 1,000 rpm and the gear 4 ratio is 1.034, the input shaft speed may be about 1,034 rpm.
This code is displayed if the input shaft speed does not conform with the value which is what the output shaft speed and the gear 4 ratio are multiple. This is most likely caused by a mechanical defect of adherence of control valves or a breakdown of solenoid controlled valves etc. than a electrical defect.
The input shaft speed in gear 5 range should be the similar to the value that is what the gear 5 ratio and the output shaft speed are multiple. For example, if the output shaft speed is 1,000 rpm and the gear 5 ratio is 0.728, the input shaft speed may be about 728 rpm.
This code is displayed if the input shaft speed does not conform with the value which is what the output shaft speed and the gear 5 ratio are multiple. This is most likely caused by a mechanical defect of adherence of control valves or a breakdown of solenoid controlled valves etc. than a electrical defect.
The input shaft speed in gear reverse range should be the similar to the value that is what the gear reverse ratio and the output shaft speed are multiple. For example, if the output shaft speed is 1,000 rpm and the gear reverse ratio is 3.808, the input shaft speed may be about 3,808 rpm.
This code is displayed if the input shaft speed does not conform with the value which is what the output shaft speed and the gear reverse ratio are multiple. This is most likely caused by a mechanical defect of adherence of control valves or a breakdown of solenoid controlled valves etc. than a electrical defect.
The PCM controls the locking or unlocking of the Torque Converter Clutch (or Damper Clutch) by applying hydraulic pressure. The main purpose of the TCC control is to save fuel by decreasing the hydraulic load inside the torque converter. The PCM outputs duty pulses to control the torque converter clutch control solenoid valve and hydraulic pressure is applied to the torque converter according to the torque converter clutch duty ratio value. When the duty ratio is high, high pressure is applied and the torque converter clutch is locked. The normal operating range of the torque converter clutch control duty ratio value is from 30% (unlocked) to 85% (locked).
The PCM increases the duty ratio to engage the torque converter clutch, monitoring the slip rpms (difference between engine speed and turbine speed). To decrease the slip of the torque converter clutch, the PCM applies more hydraulic pressure by increasing the duty ratio. When the slip rpm does not drop down below the specification with 100% duty ratio, the PCM determines that the torque converter clutch is stuck OFF and sets this code.
Refer to DTC P0741 .
The PCM sets this code when the absolute value of RPM difference between engine speed and input shaft speed is less than 20 RPM.
Refer to DTC P0741 .
The PCM checks the torque converter clutch control signal by monitoring the feedback signal from the solenoid valve drive circuit. If an unexpected signal is monitored (for example, high voltage is detected when low voltage is expected, or low voltage is detected when high voltage is expected), the PCM judges that the torque converter clutch solenoid valve circuit is malfunctioning and sets this code.
In order to control the optimum line pressure and improve the efficiency of power according to the maximum efficiency of an oil pump, VFS (Variable Force Solenoid) valve has been added in the valve body hydraulic circuit. VFS (Variable Force Solenoid): It can be said as a linear solenoid and makes detailed spool control available with the closer duty (600 ± 20Hz) than PWM (Pulse Width Modulation-60Hz). PWM repeats ON/OFF signals and decides the operation flux according to the 'ON' time. But, VFS decides the operation flux according to the degree that the spool jams water course.
Refer to DTC P0746 .
PCM inspects VFS by monitoring the feedback signal from the solenoid controlled valves. When such malfunction as case that, for example, low voltage should be inputted but High voltage is inputted and vice versa), PCM decides that VFS is malfunctioning and gives this code.
The Automatic transmission changes the gear position of the transmission by utilizing a combination of clutches and brakes, which are controlled by solenoid valves. This automatic transmission consists of a: LR ( Low and Reverse Brake ), 2ND (2nd Brake ), UD ( Under Drive Clutch ), OD (Over Drive Clutch ), REV ( Reverse Clutch ), and a RED ( Reduction Brake, only for 5 speed transmissions). The LR brake is engaged in the 1st gear and P/R/N gear positions.
The PCM checks the low and reverse control signal by monitoring the feedback signal from the solenoid valve drive circuit. If an unexpected signal is monitored (for example, high voltage is detected when low voltage is expected, or low voltage is detected when high voltage is expected), the PCM judges that the low and reverse control solenoid circuit is malfunctioning and sets this code.
The Automatic transmission changes the gear position of the transmission by utilizing a combination of clutches and brakes, which are controlled by solenoid valves. This automatic transmission consists of a: LR ( Low and Reverse Brake ), 2ND (2nd Brake), UD (Under Drive Clutch ), OD (Over Drive Clutch ), REV (Reverse Clutch), and a RED (Reduction Brake, only for 5 speed transmissions). The UD clutch is engaged in the 1st/2nd/3rd/4th gear positions.
The PCM checks the UD clutch control signal by monitoring the feedback signal from the solenoid valve drive circuit. If an unexpected signal is monitored (for example, high voltage is detected when low voltage is expected, or low voltage is detected when high voltage is expected), the PCM judges that the UD clutch control solenoid circuit is malfunctioning and sets this code.
The Automatic transmission changes the gear position of the transmission by utilizing a combination of clutches and brakes, which are controlled by solenoid valves. This automatic transmission consists of a: LR ( Low and Reverse Brake ), 2ND (2nd Brake), UD (Under Drive Clutch), OD (Over Drive Clutch), REV (Reverse Clutch), and a RED (Reduction Brake, only for 5 speed transmissions). The 2ND brake is engaged in the 2nd and 5th gear positions.
The PCM checks the 2ND brake control signal by monitoring the feedback signal from the solenoid valve drive circuit. If an unexpected signal is monitored (for example, high voltage is detected when low voltage is expected, or low voltage is detected when high voltage is expected), the PCM judges that the 2ND brake control solenoid circuit is malfunctioning and sets this code.
The Automatic transmission changes the gear position of the transmission by utilizing a combination of clutches and brakes, which are controlled by solenoid valves. This automatic transmission consists of a: LR ( Low and Reverse Brake ), 2ND (2nd Brake), UD (Under Drive Clutch), OD (Over Drive Clutch), REV (Reverse Clutch), and a RED (Reduction Brake, only for 5 speed transmissions). The OD clutch is engaged in the 3rd/4th/5th gear positions.
The PCM checks the OD clutch control signal by monitoring the feedback signal from the solenoid valve drive circuit. If an unexpected signal is monitored (for example, high voltage is detected when low voltage is expected, or low voltage is detected when high voltage is expected), the PCM judges that the OD clutch control solenoid circuit is malfunctioning and sets this code.
The Automatic transmission changes the gear position of the transmission by utilizing a combination of clutches and brakes, which are controlled by solenoid valves. This automatic transmission consists of a: LR (Low and Reverse Brake), 2ND (2nd Brake), UD (Under Drive Clutch), OD (Over Drive Clutch), REV (Reverse Clutch), and a RED (Reduction Brake, only for 5 speed transmissions). The RED clutch is engaged in the P/R/N/1st/2nd/3rd gear positions.
The PCM checks the RED clutch control signal by monitoring the feedback signal from the solenoid valve drive circuit. If an unexpected signal is monitored (for example, high voltage is detected when low voltage is expected, or low voltage is detected when high voltage is expected), the PCM judges that the RED clutch control solenoid circuit is malfunctioning and sets this code.
The automatic transmission supplies power to the solenoid valves by way of a control relay. When the PCM sets the relay to ON, the relay operates and the battery power is supplied to all the solenoid valves. When the PCM sets the relay to OFF, all solenoid valve power is shut off and the transmission is held in the 3rd gear position. (Fail Safe Mode)
The PCM checks the A/T control relay signal by monitoring the control signal. If, after the ignition key is turned on, an unexpected voltage value, which is quite a bit lower than battery voltage, is detected, the PCM sets this code. This code can also be set when the battery power fuse in the ignition switch has been shorted.
The automatic transmission supplies power to the solenoid valves by way of a control relay. When the PCM sets the relay to ON, the relay operates and the battery power is supplied to all the solenoid valves. When the PCM sets the relay to OFF, all solenoid valve power is shut off and the transmission is held in the 3rd gear position. (Fail Safe Mode)
The PCM checks the A/T control relay signal by monitoring the control signal. If, the voltage applied to A/T solenoids is lower than 0.5V, the PCM sets this code.
The automatic transmission supplies power to the solenoid valves by way of a control relay. When the PCM sets the relay to ON, the relay operates and the battery power is supplied to all the solenoid valves. When the PCM sets the relay to OFF, all solenoid valve power is shut off and the transmission is held in the 3rd gear position. (Fail Safe Mode)
The PCM checks the A/T control relay signal by monitoring the control signal. If, the voltage applied to A/T solenoids is higher than 20V, the PCM sets this code.