Hyundai Santa Fe (2006 year). Manual — part 231
BR -96
BRAKE SYSTEM
DTC C1235 PRESSURE SENSOR(PRIMARY) - ELECTRICAL
COMPONENT LOCATION
EE9A1785
EJBF502R
GENERAL DESCRIPTION
ED1866C3
The pressure sensor, installed in the HECU, sense the brake oil pressure to judge driver’s brake intention when ESP is
operating. If pressure of master cyclinder is applied to pressure sensor, the strain of the piezo element is changed and
then the resistance of brige circuit is chanded according to changed strain. Therefore this changed resistance changes
output voltage of brige circuit and output voltage changes linearly. The sensor output is a analog signal in proportion to
supply voltage, and the HECU recognizes a pressure value according to signal ratio about supply voltage.
DTC DESCRIPTION
E1F99F60
Each unfiltered input signal voltage is monitored to be in the range of 4.7 V
<
input signal voltage
<
5.3 V. A failure is
detected if the output signal value is out of specified range for more than 100 ms or pressure sensor self test form is out
of specification during self test.
DTC DETECTING CONDITION
E5CB8634
Item
Detecting Condition
Possible cause
DTC Strategy
• Voltage Monitoring
Monitoring
Period
• Continuous
Case 1
Enable
Conditions
• A sensor supply failure is detected if Sensor
Supply Voltage
>
5.3 V or Sensor Supply Voltage
<
4.7 V for t
>
= 60 ms.
Monitoring
Period
• Continuous
Case 2
Enable
Conditions
• A Fault is set if the DSO signal is voltage of DSO
>
4.7
V or voltage of DSO
<
0.3V for a time t
>
= 100 ms.
- DSO : original pressure value.
• Open or short of pressure
sensor circuit
• Inoperative pressure sensor
• Inoperative HECU
ABS (ANTI-LOCK BRAKE SYSTEM)
BR -97
Item
Detecting Condition
Possible cause
Monitoring
Period
• Continuous
Case 3
Enable
Conditions
• A Fault is set if the DSI signal is voltage of DSI
>
4.7
V or voltage of DSI
<
0.3V for a time t
>
= 100 ms.
- DSI : inverted pressure value.
Monitoring
Period
• Continuous
Case 4
Enable
Conditions
• A Fault is set if the voltage of DSO + DSI
>
5.5V or
voltage of DSO + DSI
<
4.5V for a time t
>
= 100ms.
- DSO : original pressure value.
- DSI : inverted pressure value.
Monitoring
Period
• Once during Power Up
Case 5
Enable
Conditions
• POS detects internal sensor malfunctions (sensor
element, amplification, etc.). The POS is triggered
if no low voltage is present and supply voltage is
switched on. The test phase is divided in two 60 ms
parts. DSO signal must be
<
0.5 V for 30 ms. In
phase 2 DSO signal must be between 1.9V and 3.1V
for also 30 ms then the POS Test is passed. The test
phase is divided in two 60 ms parts. DSO and DSI
signal must be
<
0.5 V for 30 ms. In phase 2 DSO
and DSI signal must be between 1.9 V and 3.1 V for
also 30 ms then the POS Test is passed. A fault is
set if POS does not satisfy the above conditions
- POS : Power on selftest.
Fail Safe
• No Pressure Signal available..
• Sensor failure outside the ABS control cycle
- Only the ABS/ESP functions are inhibited, allow the
EBD. The ABS/ESP warning lamps are activated
and the EBD warning lamp is not activated.
• Sensor failure inside the ABS control cycle
- Inhibit the ESP control, allow the EBD. The
ESP warning lamps are activated. After the
control, the ABS functions are inhibited. The
ABS warning lamps are activated.
BR -98
BRAKE SYSTEM
MONITOR SCANTOOL DATA
EA3E9727
1.
Connect scantool to Data Link Connector(DLC).
2.
Ignition "ON"
&
Engine "ON".
3.
Press the brake pedal.
4.
Monitor the "Pressure Sensor" parameter on the Scantool.
Specification : Approx. 60 bar ~150 bar (There are difference in displayed parameter according to braking force)
Fig 1) Test Condition : Ignition "ON" & Engine "ON" Normal data (There are difference in displayed
parameter according to braking force)
Fig1
EJBF502S
5.
Whenever brake pedal is pushed down, is the pressure sensor’s scantool data changed?
YES
▶
Fault is caused by having been repaired and HECU memory was not cleared. Clear the DTC and then go to
"Verification Of Vehicle Repair" procedure.
NO
▶
Go to "Component Inspection" procedure.
ABS (ANTI-LOCK BRAKE SYSTEM)
BR -99
COMPONENT INSPECTION
E1DC2E13
1.
Ignition "OFF".
2.
Ignition "ON".
3.
Connect scantool and select "Diagnostic Trouble Codes (DTCs)" mode.
4.
Using a scantool, Clear DTC.
5.
Select "Diagnostic Trouble Codes (DTCs)" mode again.
6.
Are any DTCs present ?
YES
▶
Substitute with a known-good HECU and check for proper operation. If problem is corrected, replace HECU and
then go to "Verification Of Vehicle Repair" procedure.
NO
▶
Fault is intermittent caused by faulty HECU or was repaired and HECU memory was not cleared. go to "Verification
Of Vehicle Repair" procedure.
VERIFICATION OF VEHICLE REPAIR
EB07C6B9
Refer to DTC C1101.
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст