SsangYong Rexton. Manual - part 527

ABS AND TCS  4E-73

SSANGYONG  Y200

Step

1. Raise and suitably support the vehicle at the

corner being tested.

2. Turn the ignition to ON.

Important: Do not step on the brake pedal at any
time during this test.

3. Install the scan tool to the data link connector

(DLC).

4. Select the TCS function and “Wheel rear left” to

begin the solenoid tests at that wheel. This will test
both the prime and pilot valves.

5. When the scan tool indicates a pressure increase,

attempt to rotate the wheel.

Can the wheel be rotated?
When the scan tool indicates that the prime valve was
turned OFF, attempt to rotate the wheel again.

Can the wheel be rotated now?

When the scan tool indicates that the pilot valve and
the pump motor were switched OFF, attempt to rotate
the wheel again.
Can the wheel be rotated?

1. Clear all DTCs.
2. Road test the vehicle.

Does the DTC set again?

1. Check the wiring harness and connector terminals

for an intermittent problem.

2. Repair any problem found.

Is the repair complete?

Replace the ABS unit.
Is the repair complete?

DTC 141/146 - Left Rear Prime Line and TCS Pilot Valve Fault

1

Action

Yes

No

Value

2

3

Go to Step 6

Go to Step 2

-

4

5

6

Go to Step 6

Go to Step 5

-

System OK

-

-

System OK

-

-

Go to Step 6

Go to Step 3

-

Go to Step 4

Go to Step 6

-

SSANGYONG  Y200

4E-74  ABS AND TCS

DIAGNOSTIC TROUBLE CODE (DTC) 121 -  VALVE RELAY CIRCUIT

FAULT

YAD4E240

Circuit Description

When the ABS is active, the valve relay provides
voltage to actuate the solenoid valves. The valves do
not use this voltage unless the ABS control module
provides the ground for each solenoid coil.

DTC 12 will set if the valve relay voltage is low or if the
relay supply line is at 12 volts when the ABS control
module is not requesting it. This DTC will also set if
the ABS control module detects three or more solenoid
valve circuits are open or shorted during the self-test.

Diagnosis

This procedure checks whether there is a poor ground
connection for the electronic brake control module
(EBCM).

Cause(s)

•

A connector terminal is corroded.

•

The wiring harness is damaged.

•

The ground terminal is not conducting properly.

•

The valve relay is defective.

•

The EBCM is defective.

Action Taken When the DTC Sets

ABS/TCS is disabled, and the ABS warning lamp is
turned ON for the remainder of the ignition cycle. If
the failure is intermittent, the control module will enable
the system at the next ignition cycle and set a history
DTC 12.

Diagnostic Aids

It is very important to perform a thorough inspection
of the wiring and the connectors. Failure to do so may
result in misdiagnosis, causing part replacement with
the reappearance of the malfunction.

ABS AND TCS  4E-75

SSANGYONG  Y200

Step

1. Use a scan tool to clear all DTCs.

2. Road test the vehicle.
Does DTC 121 set again?

1. Check all system wiring harness connectors and

terminals, especially the electronic brake control
module (EBCM), for any problem that could cause
an intermittent condition.

2. Repair any intermittent problem found.
Is the repair complete?

Check fuse SB2.
Is fuse SB2 blown?

1. Check for a short circuit and repair it, if necessary.

2. Replace fuse SB2.
Is the repair complete?

1. Disconnect the valve relay.
2. Check the voltage between the valve relay connec-

tor terminal 15 and ground of EBCM.

Is the voltage equal to the specified valve?

Repair the open circuit between the valve relay
connector terminal 15 and terminal SB2 of EBCM.
Is the repair complete?

Replace the hydraulic modulator.
Is the repair complete?

DTC 121 - Valve Relay Circuit Fault

1

Action

Yes

No

Value

2

3

Go to Step 3

Go to Step 2

-

4

5

6

System OK

-

-

System OK

-

-

System OK

-

-

System OK

-

-

Go to Step 4

Go to Step 5

-

Go to Step 7

Go to Step 6

11 - 14 V

7

SSANGYONG  Y200

4E-76  ABS AND TCS

DIAGNOSTIC TROUBLE CODE (DTC) 110 - RETURN PUMP MOTOR

CIRCUIT FAULT

YAD4E250

Circuit Description

When the electronic brake control module (EBCM)
grounds the pump motor relay, it closes and provides
battery voltage to the pump motor. The EBCM senses
the voltage applied to the pump motor verify motor
operation.

Diagnosis

This DTC sets when the EBCM detects B+ without motor
relay activation or if the EBCM does not detect B+
after motor relay activation.

Cause

•

There is a faulty terminal in the pump motor
connector.

•

There is faulty terminal in EBCM connector.

•

There is high resistance in the chassis ground.

•

The EBCM defective.

•

There is a problem in the wiring from the pump motor
connector to the motor.

Action Taken When the DTC Sets

ABS is disabled, and the ABS warning lamp is ON.

Test Description

The number(s) below refer to step(s) on the diagnostic
table.

2. This step checks for poor connection.

5. This step checks for the motor relay.

13. This step checks for the hydraulic modulator.

Diagnostic Aids

It is very important to perform a thorough inspection
of the wiring and the connectors. Failure to do so may
result in misdiagnosis, causing part replacement with
the reappearance of the malfunction.