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 ), 2ND ( 2nd Brake ), UD ( Under Drive Clutch ), OD ( Over Drive Clutch ), REV ( Reverse Clutch ), and RED ( Reduction Brake, only for 5 speed transmissions). The 2ND Brake is engaged in the 2nd gear and 4th gear positions.
DTC Description
The TCM checks the Under Drive 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 TCM judges that 2nd Brake drive contorl 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 RED SOLENOID VALVE
Faulty PCM/TCM
|
Enable Conditions | 16V > Voltage Battery >10V
Engine run time = 0.5sec
Time after TCM turns on A/T Control Relay 0.5 sec
Not on shifting
|
Threshold Value | Feedback voltage from 2nd control solenoide>vb-2V and 2nd control duty is 0%
Feedback voltage from 2nd control solenoide=5.5V and 2nd control duty is 100%
|
Diagnostic Time | More than 0.3sec
|
Fail Safe | Locked in 3 rd gear.(control relay off)
|
Specification
Solenoid Valve for Pressure Control
Sensor type : Normal open 3-way |
Operating temperature : -22~266?(-30?~130?) |
Frequency : LR, 2ND, UD, OD, RED : 61.27Hz (at the ATF temp. -20? above) DCC : 30.64Hz ? KM series : 35Hz |
Internal resistance : 2.7~3.4O(68? or 20?) |
Schematic Circuit Diagram
Signal Waveform & Data
Fig 1) "5TH" gear ? "4TH" gear
Fig 2) "P & N" Range