EBD/PARKING BRAKE WARNING LAMP MODULE
The active EBD warning lamp module indicates the self-test and failure status of the EBD. However, in case the Parking Brake Switch is turned on, the EBD warning lamp is always turned on regardless of EBD functions. The EBD warning lamp shall be on
- During the initialization phase after IGN ON. (continuously 3 seconds).
- When the Parking Brake Switch is ON or brake fluid level is low.
- When the EBD function is out of order.
- During diagnostic mode.
- When the ECU Connector is separated from ECU.
ESC WARNING LAMP (ESC SYSTEM)
The ESC warning lamp indicates the self-test and failure status of the ESC.
The ESC warning lamp is turned on under the following conditions
- During the initialization phase after IGN ON. (continuously 3 seconds).
- In the event of inhibition of ESC functions by failure.
- When driver turn off the ESC function by on/off switch.
- During diagnostic mode.
ESC FUNCTION LAMP (ESC SYSTEM)
The ESC function lamp indicates the self-test and operating status of the ESC.
The ESC Function lamp operates under the following conditions
- During the initialization phase after IGN ON. (continuously 3 seconds).
- When the ESC control is operating. (Blinking - 2Hz)
ESC ON/OFF SWITCH (ESC SYSTEM)
The ESC On/Off Switch shall be used to toggle the ESC function between On/Off states based upon driver input. The On/Off switch shall be a normally open, momentary contact switch. Closed contacts switch the circuit to ignition.
Initial status of the ESC function is on and switch toggle the state.
Scheme 94
Scheme 95
ESC CONNECTOR INPUT/OUTPUT
| Connector Terminal | Specification | |
|---|---|---|
| No | Description | |
| 4 | IGNITION1(+) | Over Voltage Range: 16.5 ± 0.5 V < V Operating Voltage range: 9.5V ± 0.5V < V < 16.5 ± 0.5 V Low Voltage Range: 7.0 V ± 0.5 V < V < 9.5 ± 0.5 V Max. Current: I < 300 mA |
| 32 | POS. BATTERY (SOLENOID) | Over Voltage Range: 16.5 ± 0.5 V < V Operating Voltage range: 9.5 ± 0.5 V < V < 16.5 ± 0.5 V Max. Current: I < 40 A (ESC Only) |
| 1 | POS. BATTERY (MOTOR) | Operating voltage range: 9.5 ± 0.5 V < V < 16.5 ± 0.5 V Rush current: I < 100 A Max current: I < 40 A (ESC Only) Max leakage current: I < 0.2 mA |
| 16 | GROUND | Rated current: I < 300 mA Max. current: I < 30 A |
| 47 | PUMP MOTOR GROUND | Rush current: I < 100 A Max current: I < 30 A |
| 23 | YAW & LATERAL G SENSOR GROUND | Rated current: I < 65 mA |
| 28 | MASTER PRESSURE SENSOR GROUND | Rated current: I < 10 mA |
| 31 | STEERING ANGLE SENSOR GROUND | Rated current: I < 100 mA |
| 37 | MASTER PRESSURE SENSOR POWER | Max Output current: I < 10 mA Max Output voltage: 4.9 V < or = V < or = 5.1 V |
| 36 | YAW SENSOR POWER | Max Output current: I < 65mA Max Output voltage: 4.9V < or = V < or = 5.1V |
| 5 | BRAKE LIGHT SWITCH | Input voltage low: 0 V < or = V < or = 3.0 V Input voltage High: 7.0 V < or = V < or = 16.0 V |
| 21 | BRAKE SWITCH | |
| 6 | SENSOR FRONT RIGHT OUTPUT | Max current: I < 2 mA External pull up resistance: 10 Kohms < R Output duty: 50 ± 20 % |
| 18 | ABS/EBD W/LAMP DRIVE | Max. current: I < 200 mA Max. output low voltage: V < 1.2 V |
| 34 | ESC W/LAMP DRIVE | |
| 35 | ESC F/LAMP DRIVE | |
| 27 | ESC ON/OFF SWITCH | Input voltage low: 0 V < or = V < or = 3.0 V Input voltage High: 7.0 V < or = V < or = 16.0 V Max input current: I < 10 mA |
| 22 | CAN BUS LINE (LOW) | Max. current: I < 10 mA |
| 7 | CAN BUS LINE (HIGH) | |
| 46 | SENSOR FRONT LEFT POWER | Output voltage: IGN (V) ± 1 V Output current: Max 30 mA |
| 45 | SENSOR FRONT RIGHT POWER | |
| 44 | SENSOR REAR LEFT POWER | |
| 43 | SENSOR REAR RIGHT POWER | |
| 15 | SENSOR FRONT LEFT SIGNAL | Input current LOW: 5.9 - 8.4 mA Input current HIGH: 11.8 - 16.8 mA Frequency range: 1 - 2000 Hz Input duty: 50 ± 20 % |
| 30 | SENSOR FRONT RIGHT SIGNAL | |
| 14 | SENSOR REAR LEFT SIGNAL | |
| 29 | SENSOR REAR RIGHT SIGNAL | |
| 8 | STEERING ANGLE SENSOR PHASE 1 | Input duty (ST1, ST2): 50 ± 10 Phase difference (ST1, ST2): 2 ± 0.6 deg High voltage: 3.0 V < V < 4.1 V Low voltage: 1.3V < V < 2.0 V |
| 40 | STEERING ANGLE SENSOR PHASE 2 | |
| 39 | STEERING ANGLE SENSOR PHASE N | |
| 12 | MASTER PRESSURE SENSOR SIGNAL | Sensor Input Voltage: 0 V < or = V < or = 5.0 V Zero offset Voltage: 0.5 V ± 0.15 V Input current: Max 2 mA |
| 9 | LATERAL G SENSOR SIGNAL | Sensor Input Voltage: 0 V < or = V < or = 5.0 V Zero offset Voltage: 2.5 ± 0.1 V |
| 41 | YAW SENSOR SIGNAL | Sensor Input Voltage: 0 V < or = V < or = 5.0 V Zero offset Voltage: 2.5 ±0.1 V |
| 19 | DIAGNOSIS INPUT/OUTPUT | Input voltage IL (V) < 0.3 IGN (V) IH (V) > 0.7 IGN (V) Output voltage OL (V) < 0.2 IGN (V) OH (V) > 0.8 IGN (V) |
ESC CONNECTOR INPUT/OUTPUT SPECIFICATION CHART
MEMORY OF MALFUNCTION CODE
- It keeps the code as far as the backup lamp power is connected. (O)
- It keeps the code as far as the HCU power is on. (X)
FAIL-SAFE
- Turn the system down and perform the following actions and wait for HECU power OFF.
- Turn the valve relay off.
- Inhibit operations for the malfunctioning system; once the system is restored to normal operation, operations will resume.
WARNING LAMP ON
- ABS warning lamp turns on when ABS malfunctions.
- ESC operation lamp turns on and ESC OFF warning lamp blinks when ESC malfunctions. When power voltage and valve relay voltage are abnormal, input/output related failure judgment is not made.
Scheme 96
- The yaw-rate & lateral G sensor is applied for the ESC system.
- The yaw-rate is the angular velocity, when a vehicle turns a corner, and the lateral G is side-to-side acceleration.
- The sensor assembly is located under the center console, behind the shift lever.
MEASURING PRINCIPLE
The split of the steering angle sensor detects a steering angle of the steering wheel by a ON/OFF pulse caused by whether or not the LED lights go through the hole of the split, rotating as the steering wheel revolves. There are three LEDs, two(ST1, ST2) for detecting a steering direction, and the other for the neutral position. The HECU calculates the steering angle by the pulse from the steering angle sensor.
