6.6.4 Component Locator
6.6.4.1 Component Locator

3

2

1

5

4

FE06-1003b

Legend

1. Right Front Wheel Speed Sensor
2. Right Rear Wheel Speed Sensor
3. Left Rear Wheel Speed Sensor
4. Left Front wheel Speed Sensor

5. Hydraulic Electronic Control Unit (HECU)

Brake System

ABS / TCS / EBD / ESP

6-73

6.6.5 Schematic
6.6.5.1 Schematic

CAN-Bus

Instrument Cluster Assembly

Left Front Wheel Speed Sensor

Right Front Wheel 

Speed Sensor

Left Rear Wheel Speed Sensor

Right Rear Wheel 

Speed Sensor

Brake Light Switch Signal

Scan Tool

ABS Control Module

ABS Relay

Left Front Wheel Brake 

Oil Inlet Solenoid

Left Front Wheel Brake 

Oil Outlet Solenoid

Right Front Wheel Brake 

Oil Inlet Solenoid

Right Front Wheel Brake 

Oil Outlet Solenoid

Left Rear Wheel Brake 

Oil Inlet Solenoid

Left Rear Wheel Brake 

Oil Outlet Solenoid

Right Rear Wheel Brake 

Oil Inlet Solenoid

Right Rear Wheel Brake 

Oil Outlet Solenoid

ABS Pump

K Line

FE06-5602b

6-74

ABS / TCS / EBD / ESP

Brake System

6.6.6 Diagnostic Information and Procedures
6.6.6.1 Diagnosis Description

Read DTC codes through the vehicle data-link connector (DLC data-link connector). Use ABS control module data table, through
reading scan tool displayed data, to read the switches and sensors function without removing any component. Reading the data is
the first diagnostic step and is also one of the ways to reduce diagnostic time.

6.6.6.2 Visual Inspection

–

Confirm Fault Symptom

In the diagnostic process, the most difficult situation is that no symptoms appear. In this case, you must thoroughly analyze the
described malfunction. and then simulate the malfunction occurring conditions and circumstances. Even for a very experienced
technician, if carry out the diagnostic without verify the malfunctions first, it is possible to ignore a number of important things,
and make wrong judgment. This will cause the diagnostic can not continue.

–

Check the easy to access system components to identify whether there is a significant damage or a potential malfunction.

–

Connectors  connection  and  vibration  should  be  thoroughly  examined.  If  possible,  for  vibrations  caused  malfunction,  it  is
recommended to use the vibration method.

1. With a finger, gently shake the sensor that may be faulty and check for malfunction.

2. Gently shake the sensor in the vertical and horizontal directions.

3. Gently shake the sensor wiring harness in the vertical and horizontal directions.

6.6.6.3 DTC Code (DTC) List

DTC code

Description

C1101

ECU Power Supply Voltage: High Voltage

C1102

ECU Power Supply Voltage: Low Voltage

C1200

Wheel Speed Sensor, Left Front: Open / Short

C1201

Wheel Speed Sensor, Left Front: Scope, Performance, Intermittent Fault

C1202

Wheel Speed Sensor, Left Front: Invalid / No Signal

C1203

Wheel Speed Sensor, Right Front: Open / Short

C1204

Wheel Speed Sensor, Right Front: Scope, Performance, Intermittent Fault

C1205

Wheel Speed Sensor, Right Front: Invalid / No Signal

C1206

Wheel Speed Sensor, Left Rear: Open / Short

C1207

Wheel Speed Sensor, Left Rear: Scope, Performance, Intermittent Fault

C1208

Wheel Speed Sensor, Left Rear: Invalid / No Signal

C1209

Wheel Speed Sensor, Right Rear: Open / Short

C1210

Wheel Speed Sensor, Right Rear: Scope, Performance, Intermittent Fault

C1211

Wheel Speed Sensor, Right Rear: Invalid / No Signal

C1213

Wheel Speed Sensor Frequency Error (General wheel speed sensor fault, slip or tooth error)

C1604

ECU Hardware Malfunction

Brake System

ABS / TCS / EBD / ESP

6-75

DTC code

Description

C1605

CAN Hardware Malfunction

C1616

CAN Bus Malfunction

C2112

Valve Relay Malfunction

C2308

Valve Malfunction, Left Front Inlet Valve

C2312

Valve Malfunction, Left Front Outlet Valve

C2316

Valve Malfunction, Right Front Inlet Valve

C2320

Valve Malfunction, Right Front Outlet Valve

C2324

Valve Malfunction, Left Rear Inlet Valve

C2328

Valve Malfunction, Left Rear Outlet Valve

C2332

Valve Malfunction, Right Rear Inlet Valve

C2336

Valve Malfunction, Right Rear Outlet Valve

C2402

Return Pump Malfunction (Electrical and Electronic Malfunction)

6.6.6.4 Scan Tool and The Vehicle Can Not Communicate

Connect scan tool to the data-link connector (DLC data-link connector), turn the ignition switch to ON, operate the scan tool, if the
display shows the communication error message, then the vehicle or the scan tool has a malfunction.

–

If the scan tool connected with another vehicle shows normal, then check the original vehicle DLC.

–

If the scan tool is still unable to establish communication, then the problem may be in the scan tool, for the specific circumstances.
Refer to

11.17

 

Data Communication System

.

6.6.6.5 Fault Symptom Table

If the scan tool shows the normal codes, but the fault still exists, check the circuit whether there are various fault symptoms according
to sequence in the following table, and then refer to the appropriate maintenance program to fix the fault.

Symptoms

Suspected Parts

Repair Program

ABS Inoperative

1. Check DTC, confirm that there is no
historical and current DTC code.

Use scan tool to access the module

2.IG2 Power Supply Circuit (ABS module
wiring harness connector CA13 terminal
32)

Refer to 

6.6.6.8

 

ABS Warning Lamp

Always On

check the ABS control module

in the wiring harness connector inspection
(CA13 terminal 32 voltage)

3. Front Speed Sensor Circuit

Refer to 

6.6.6.11

 

Wheel Speed Sensor

Fault Diagnosis

4. Rear Speed Sensor Circuit

Refer to 

6.6.6.11

 

Wheel Speed Sensor

Fault Diagnosis

6-76

ABS / TCS / EBD / ESP

Brake System