Hyundai Santa Fe (2006 year). Manual — part 245
BR -152
BRAKE SYSTEM
DTC C1626 IMPLAUSIBLE CONTROL
COMPONENT LOCATION
E04AB5EA
Refer to DTC C1235.
GENERAL DESCRIPTION
E43144C2
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
ED2FA73C
Under normal conditions, the inlet valves of all four wheels are not closed during control for longer than 1.28s or If the
controller requests pressure-hold or pressure-decrease for longer than 1.28s, a fault is detected. The ABS/ESP warning
lamp is turned ON and the EBD warning lamp is turned OFF.
DTC DETECTING CONDITION
EC18FDBE
Item
Detecting Condition
Possible cause
DTC Strategy
• Signal monitoring
Monitoring
Period
• Continuous
Case 1
Enable
Conditions
• If the controller requests pressure-hold or
pressure-decrease for longer than 1.28
s, a fault is stored.
Monitoring
Period
• Continuous (at vehicle reference speed
>
6
m/s, no detected under voltage and a fault
is not already detected)
Case 2
Enable
Conditions
• The monitoring reports a failure if continuous ESP
control occurs for a time period
>
= 10 s.
Fail Safe
• The ABS/ESP functions are inhibited, allow
the EBD control.
• The ABS/ESP warning lamps are activated.
• Inoperative HECU
COMPONENT INSPECTION
EF9690E7
Refer to DTC C1235.
VERIFICATION OF VEHICLE REPAIR
E8F1EE76
Refer to DTC C1101.
ABS (ANTI-LOCK BRAKE SYSTEM)
BR -153
DTC C1702 VARIANT CODING ERROR
COMPONENT LOCATION
EB373A2E
Refer to DTC C1235.
GENERAL DESCRIPTION
E57AFA56
There is no hardware difference of the HECU according to the vehicle’s specification, just software is changed by the
vehicle parameter used for ESP control. The HECU stores a classified variant code value according to the received
data(a kind of engine, engine displacement, a kind of T/M). After then the HECU read a various parameter according to
the stored variant value in the memory to use for the ESP control.
DTC DESCRIPTION
E06AF2C9
The HECU checks the variant code after ignition. If a inappropriate variant code is detected or there is no variant code,
a fault is detected.
DTC DETECTING CONDITION
EA677BE2
Item
Detecting Condition
Possible cause
DTC Strategy
• Internal monitoring
Monitoring
Period
• Once during startup.
Enable
Conditions
• During intialization, there is no inputed valid varient code.
• No variant code stored in EEPROM.
• Receieved variant code is invalid.
• There is a difference between preset variant code
and detected variant code.
Fail Safe
• The ABS/EBD/ESP functions are inhibited.
• The ABS/EBD/ESP warning lamps are activated.
• Inoperative HECU
• Replacement of PCM(ECM
&
TCM)
BR -154
BRAKE SYSTEM
MONITOR SCANTOOL DATA
EC715F53
VARIANT CODE
1.
Check for improper installation of EMS/PCM(ECM
&
TCM)/ESP.
2.
Connect scantool to Data Link Connector(DLC).
3.
Ignition "ON".
4.
Go in Anti-Lock brake system (figure 1).
5.
Perform variant code.
6.
Disconnect scantool.
7.
Ignition "OFF" and then ignition "ON". Go to "Component Inspection"Procedure.
Fig 1) Varient coding.
Fig1
SCMBR6568L
COMPONENT INSPECTION
EDF8867E
Refer to DTC C1235.
VERIFICATION OF VEHICLE REPAIR
E894754C
Refer to DTC C1101.
ABS (ANTI-LOCK BRAKE SYSTEM)
BR -155
DTC C2112 VALVE RELAY ERROR
COMPONENT LOCATION
E17FAF5F
Refer to DTC C1235.
GENERAL DESCRIPTION
E510D9AF
The HECU supplies battery power to all solenoid valves with a valve relay which is controlled by the Electronic Control
UNIT(ECU). The valve relay and all solenoid valves are installed inside the HECU ( Hydraulic and Electronic Control Unit
).
DTC DESCRIPTION
E5C5A183
The HECU monitors voltage of the valve relay to check if the HECU can perform ABS control normally. When the valve
relay is switched to ON, the HECU will set this code if the solenoid drive voltage is below permissible voltage ranges for
a period of time. When the valve relay is switched to OFF, the HECU sets this code if the solenoid drive voltage is over
the permissible voltage range for a period of time.
DTC DETECTING CONDITION
E59AFF33
Item
Detecting Condition
Possible cause
DTC Strategy
• Voltage monitoring
Monitoring
Period
• Once during startup.
Case 1
Enable
Conditions
• Watchdog and valve relay function is tested during
startup.A failure is detected if the valve relay/Enable
remains in off position when it is turned on and
vice versa. Reason could be short to GND or UZ,
interrupted lines or a inoperative output stage etc.
Monitoring
Period
• Continuous
Case 2
Enable
Conditions
• A Fault is detected if valve relay voltage
<
0.8
* battery voltage for a time 500 ms.
Monitoring
Period
• Continuous
Case 3
Enable
Conditions
• If valve relay malfunction and supply solenoid
valve short to battery or supply solenoid valve
and medium or high ohmic short of valve relay
(or a valve) to valve relay voltage, solenoid valve
voltage or GND are detected.
Fail Safe
• No valve actuation possible.
• The ABS/EBD/ESP functions are inhibited.
• The ABS/EBD/ESP warning lamps are activated.
• Open or short in power
supply circuit (IGN+)
• Inoperative HECU
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