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. This 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 SOLENOID VALVE 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 2nd Brake drive contorl solenoid circuit is malfunctioning and sets this code.
DTC Detecting Condition
Item | Detecting Condition & Limp Home | Possible cause |
Case 1 | DTC Strategy | Electrical Check
| Open or short in circuit
Faulty 2-4 SOLENOID VALVE
Faulty PCM/TCM
|
Enable Conditions | PWM DUTY > 25%
|
Threshold Value | Comparision solenoid operation time with Feed back signal.(Solenoid ON and Short circuit)
|
Case 2 | DTC Strategy | -
|
Enable Conditions | Comparision solenoid operation time with Feed back signal.(Solenoid OFF and Short circuit)
|
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?~130? |
Frequency :PCSV-A,B,C,D :50Hz (at the ATF temp. -20? above) VFS : 400~1000 ? KM series : 35Hz |
Internal resistance : 3.5 ± 0.2 O(20?) |
Surge voltage : 56 V |
Diagnostic Circuit Diagram
Signal Waveform
Fig 1) Wave form of "PCSV-B(2-4SOLENOID VALVE)"