Hyundai Santa Fe (2006 year). Manual — part 248

BR -164

BRAKE SYSTEM

DTC C2366 TCS VALVE PRIMARY (USV1) ERROR
DTC C2370 TCS VALVE SECONDARY (USV2) ERROR
DTC C2372 ESP VALVE 1 (HSV1) ERROR
DTC C2374 ESP VALVE 2 (HSV2) ERROR

COMPONENT LOCATION

EEF8A5A9

Refer to DTC C1235.

GENERAL DESCRIPTION

E0D75DC9

Refer to DTC C2308.

DTC DESCRIPTION

E459C827

Refer to DTC C2308.

DTC DETECTING CONDITION

E3B9D83B

Item

Detecting Condition

Possible cause

DTC Strategy

• Voltage monitoring

Monitoring

Period

• Once after ignition on at standstill if the BLS is off
• At vehicle speed

≥

15 km/h if the BLS is on.

Case 1

Enable

Conditions

• The test actuates all valves in series to detect shorts

or shunts between the valve lines. Faults are detected
if there is an error during the test.

Monitoring

Period

• The drift test executes only once during an ignition

Cycle. The test is triggered if the following conditions are
fulfilled : 10 min after power up or end of control
1)

No BLS is applied

2)

Brake pressure is

＜

10 bar

3)

Vehicle speed

＞

15 km/h

4)

Vehicle acceleration

＞

0.5 m/s

²

5)

Supply voltage

＞

11 volts.

Case 2

Enable

Conditions

• The drift test is executed only once during an

ignition Cycle.If it detects partly shorted valve
coils,almost inoperative coils or malfunction of the
valve driver, a failure is recognized.

Fail Safe

• Valve cannot be actuated or valve is incorrectly

actuated. This may result in locked wheels or
wheels without pressure.

• ABS/EBD/ESP function is prohibited.
• ABS/EBD/ESP warning lamp is turned ON.

• Inoperative HECU

ABS (ANTI-LOCK BRAKE SYSTEM)

BR -165

MONITOR ACTUATION TEST

EE1C235C

1.

Connect scantool to Data Link Connector(DLC)

2.

Ignition "ON"

＆

Engine "OFF".

3.

Select the "Actuation Test" mode on the scantool.

4.

Inspect opearating status of inlet valve with Actuation Test.

Specification : It’s normal if operating sound is heard.

Fig 1) Test Condition : Ignition "ON" & Engine "OFF"

Ex) Actuation Test on TCS(USV) valve #1

Fig1

SCMBR6573L

5.

Does a inlet valve operate normally?

YES

▶

Fault is intermittent caused by inoperative valve or was repaired and HECU memory was not cleared. Go to the

pplicable troubleshooting procedure.

NO

▶

Go to "W/Harness Inspection" procedure.

TERMINAL AND CONNECTOR INSPECTION

EEA1AAFD

Refer to DTC C2308.

VERIFICATION OF VEHICLE REPAIR

E83A38F7

Refer to DTC C1101.

BR -166

BRAKE SYSTEM

DTC C2402 MOTOR - ELECTRICAL

COMPONENT LOCATION

E1D99F74

Refer to DTC C1235.

GENERAL DESCRIPTION

E076365D

The HECU supplies battery power to the electric motor with a motor relay which is controlled by the Electronic Control
Unit(ECU). The electric motor pump supplies hydraulic pressure to all wheel brake calipers by operating the piston inside
the pump.

DTC DESCRIPTION

E7B83C4C

The ABS ECU monitors the pump motor relay or fuse open, open or short in motor or motor lock and then sets this code
if a malfunction is detected.

ABS (ANTI-LOCK BRAKE SYSTEM)

BR -167

DTC DETECTING CONDITION

E230FE39

Item

Detecting Condition

Possible cause

DTC Strategy

• Battery Voltage Monitoring

Detect

Mode

• Outside the ABS control cycle
• Inside the ABS control cycle
• Diagnosis mode

Case1(Mo-

tor Relay

Open orMo-

tor Short to

GND)

Enable

Conditions

• If the motor relay is switched ON and motor

voltage

＜

(IGN voltage ? 4V±0.5V) continued

for 49msec, the failure is detected.

Detect

Mode

• Outside the ABS control cycle
• Diagnosis mode

Case2

(Motor Lock)

Enable

Conditions

• After motor relay is switched OFF, VMR is

measured. If the time which VMR

＞

1±0.1V is

less than evaluation time, recheck is performed
again for a maximum of three times. When
VMR is not normal even on the third recheck,
the controller recognizes it as failure.

Detect Mode

• Initial Check
• Outside the ABS control cycle
• Diagnosis mode
• Failure mode

Case3(Mo-

tor Open,

Motor Short

to BATT)

Enable

Conditions

• After 1.8sec from the time that motor relay

is switched OFF, VMR

＞

4±0.5V continued

for 1.8sec, the failure is detected.

Detect Mode

• Initial Check
• Outside the ABS control cycle
• Inside the ABS control cycle
• Diagnosis mode
• Failure mode

Case4(Mo-

tor Fuse

Open)

Enable

Conditions

• If the motor relay is switched OFF and VMRP

(Motor power supply voltage)

＜

4±0.5V

continued for 1sec, the failure is detected.

Fail Safe

• The ABS/ESP functions are inhibited.
• The ABS/ESP warning lamps are activated and

the EBD warning lamp is not activated.

• Motor failure during the ABS control cycle

(Case 1, 4) :Inhibit the ABS/ESP control of
front wheels, allow the ABS/ESP control of
rear wheels, and ABS/ESP warning lamps are
switched on at the end of ABS control.

• Open or short of power

supply circuit (ABS2)

• Inoperative HECU