Component Location
General Description
The Automatic Transmission changes the gear position of the transmission utilizing a combination of Clutches and Brakes, which are controlled by solenoid valves. The HIVEC Automatic Transmission consists of a: LR ( Low and Reverse Brake ), 2-4( 2-4 Brake ), UD ( Under Drive Clutch ), OD ( Over Drive Clutch ), REV ( Reverse Clutch ).
DTC Description
The PCM/TCM checks the 2-4 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/TCM judges that 2-4 Brake control solenoid circuit is malfunctioning and sets this code.
DTC Detecting Condition
Item | Detecting Condition | Possible Cause |
DTC Strategy | Check voltage range
| Open or short in circuit
Faulty 2-4 SOLENOID VALVE
Faulty PCM/TCM
|
Enable Conditions | 16V > Actuator(TCU) power supply voltage >10V
|
Threshold Value | Circuit open or short to ground
|
Diagnostic Time | More than 1sec
|
Fail Safe | Locked in 3 rd gear.
|
Specification
Solenoid Valve for Pressure Control
- Sensor type : Normal open 3-way
- Operating temperature : -30°C~130°C
- Frequency :PCSV-A,B,C,D :50Hz (at the ATF temp. -20°C above)
VFS : 400~1000
? KM series : 35Hz
- Internal resistance : 3.5 ± 0.2 ?(20°C)
- Surge voltage : 56 V
Schematic Diagram
Signal Waveform
Fig 1) Waveform of "2-4 Brake Control Solenoid Valve Circuit(PCSV-B)"