Hyundai Tiburon (2003 year). Manual — part 88

DTC No. C2112 Valve relay
(Including fuse failure)

Probable cause

When the ignition switch is turned ON, the HECU switches the valve relay
on and off during its initial check. During this time, voltage sent to the
valve relay is compared to the voltage in the valve power monitor line. If
no current is detected in the valve power monitor line, the HECU
determines that there is an open circuit and DTC C2112 is recorded.

• Faulty wiring harness or connector

• Faulty HECU

DTC No. C1605 CAN hardware error

Probable cause

Replace the HECU.

• Interference by means of electronic wave

• Mismatching of the calculation between main

and sub processor

• Defects of the valve coil and valve coil

operating circuit element

DTC No. C1611 CAN timeout EMS, C1612 CAN timeout TCU, C1613
CAN wrong matched transmission

Probable cause

Inspect the EMS or TCU according to the instructions of Engine or T/M
group.

• No message from EMS or TCU for 500ms

• Message from A/T or M/T signal mismatch

the message from ECM or TCU

DTC No. C1610 bus off error

Probable cause

Check CAN bus wiring.
Check E37, C33, C133-4 or M42 connectors

• CAN bus cable open, or short to ground or

battery

DTC No. C2402 motor pump failure
(Motor relay, motor)

Probable cause

When the motor power line is normal but no signal is in detected in the
motor monitor line.

• Faulty wiring harness

• Faulty HECU

Powering the motor with the Hi-Scan (Pro) will discharge the battery. Start and run the engine for a while after testingis
complete.

INSPECTION CHART FOR DIAGNOSTIC TROUBLE CODES

DTC

Trouble Location

Remarks

C1101

Battery voltage over volt

: 18V or more

C1102

Battery voltage low volt

: 9.5V or less

C1200

FL wheel sensor

: open or short to ground

C1201

- Range/Performance

: speed jump or damaged
exciter

C1202

- No signal

: air-gap error or wrong excite

C1203

FR wheel sensor

: open or short to ground

C1204

- Range/Performance

: speed jump or damaged
exciter

C1205

- No signal excite

: air-gap error or wrong excite

C1206

RL wheel sensor

: open or short to ground

C1207

- Range/Performance

: speed jump or damaged
exciter

C1208

- No signal excite

: air-gap error or wrong excite

C1209

RR wheel sensor

: open or short to ground

C1210

- Range/Performance

: speed jump or damaged
exciter

C1211

- No signal

: air-gap error or wrong excite

C1604

ECU hardware

: ECU internal or valve failure

C2112

Valve relay

: valve relay or fuse failure

C2402

Motor-Electrical

: open or short to battery,
motor relay, fuse or motor
lock fail

C2227

Brake disc overheat

Only TCS

C1503

TCS switch failure

With TCS switch

C1610

CAN bus off failure

Only TCS

C1611

EMS time-out failure

Only TCS

C1612

TCU time-out failure

Only TCS

C1613

TCU un-matching failure

Only TCS

C1605

CAN hardware failure

Only TCS

FAILSAFE SPECIFICATION

DETECT MODE

THE ABILITY OF DETECTING A FAILURE

THE MANAGEMENT OF FAILURE DETECTION

1. System down. Both the ABS (TCS) and the EBD function are inhibited and the ABS (TCS) and the EBD warning lamps are

activated.
If this happens, the valve relay and all solenoids are prevented from being switched on.

2. Only the ABS (TCS) function is inhibited. The ABS (TCS) warning lamp is activated and the EBD warning lamp is not

activated.

3. Sensor failure outside the ABS control cycle.

(1) Only one sensor fails : take the same action as management 2.

(2) More than two sensors fail : take the same action as management 1.

4. Sensor failure inside the ABS control cycle.

(1) One front sensor fails : inhibit the ABS control of the failed-wheel and maintain ABS control of the normal wheels.

After the controller completes the ABS control, take the same action as in management 2.

(2) One rear sensor fails : inhibit ABS control of both front wheels and the pressure of both rear wheels is decreased.

After the controller completes the ABS control, take the same action as in management 2.

(3) More than two sensor fail : take the same action as in management 1.

5. Low operating voltage

(1) Outside the ABS control cycle : inhibit the ABS (TCS) control of front wheels and allow ABS control of rear wheels,

deactivating the motor.
The ABS (TCS) warning lamp is directly switched on.
When the voltage recovers to the normal operating range, enable the ABS function and the ABS (TCS) warning lamp
is switched off and erases theerror code of low voltage.

(2) Inside the ABS control cycle : inhibit the ABS control of the front wheels and allow the the ABS control of rear wheels,

deactivating the motor.
The ABS (TCS) warning lamp is directly switched on and remains on. The error code is always stored.

6. Motor error during the ABS control cycle. Inhibit the ABS control of front wheels, allow ABS control of the rear wheels and

ABS (TCS) warning lampis switched ON at the end of ABS control.

7. TCS failure

Inhibit the TCS control and allow the ABS/EBD control. Meanwhile, stop checking the TCS switch failure under the TCS
control.