SsangYong Rexton. Manual - part 529

SSANGYONG  Y200

4E-82  ABS AND TCS

DIAGNOSTIC TROUBLE CODE (DTC) 800 - LOW VOLTAGE FAULT

YAD4E270

Circuit Description

Proper operation of the electronic brake control module
(EBCM) requires a certain minimum voltage. The EBCM
monitors the ignition feed circuit to determine if the
voltage falls below a minimum level.

Diagnosis

This test checks for battery output, proper grounding,
blown fuses, faulty ignition switch, and problems in
the circuitry.

Cause

•

The battery is defective.

•

There is a defective ground connection.

•

A connector is damaged.

•

A wire is broken or shorted.

•

A fuse is blown.

•

The ignition switch is malfunctioning.

Action Taken When the DTC Sets

ABS action is disabled during the period of low voltage,
and the ABS warning lamp is ON for the remainder of
the ignition cycle. If the failure is intermittent, the EBCM
will enable the system at the next ignition cycle and
set a history DTC 800.

Test Description

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

1. This step determines whether there is voltage at

the battery and at the high current source.

7. This step checks for voltage at the ignition 1

source.

15. This step begins the check for voltage at the EBCM

end of the ABS harness.

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-83

SSANGYONG  Y200

Yes

Step

Check the voltage at the battery.

Is the voltage within the specified value?
Charge or replace the battery, as required.

Is the repair complete?

Check fuse SB2 in the engine fuse block.
Is the fuse blown?

1. Replace fuse SB2.
2. Turn the ignition to ON.

Does the fuse blow again?

1. Turn the ignition to OFF.
2. Trace the wires in the ABS wiring harness from

terminal SB2 at the engine fuse block to the
terminal 17, 18 in EBCM.

3. Repair any short circuit found along this path.
Is the repair complete?

1. Turn the ignition to OFF.

2. Install the scan tool.
3. Clear all DTCs.

4. Road test the vehicle.
Does DTC 800 reset?

Check terminal 1 in the C101 connector.

Is the connection good?
Repair the terminal.

Is the repair complete?

1. Turn the ignition to OFF.
2. Install the scan tool.

3. Clear all DTCs.
4. Rood test the vehicle.

Does DTC 800 reset?

Check fuse F7 in the I/P fuse block.
Is fuse F7 blown?

1. Replace fuse F7.
2. Turn the ignition to ON.

Does fuse F7 blow again?

1. Turn the ignition to OFF.
2. Trace the WHT/RED wires in the ABS wiring

harness from fuse F7 to terminal 15 of the EBCM
connector.

3. Repair any short circuit found along this path.
Is the repair complete?

1. Turn the ignition to OFF

2. Install the scan tool.
3. Clear all DTCs.

4. Rood test the vehicle.
Does DTC 800 reset?

DTC 800 - Low Voltage Fault

1

Action

No

Value

2

3

Go to Step 3

Go to Step 2

11 - 14 V

4

5

6

System OK

-

-

System OK

Go to Step 9

-

Go to Step 4

Go to Step 7

-

Go to Step 5

Go to Step 6

-

Go to Step 8

Go to Step 10

-

7

System OK

-

-

System OK

-

-

Go to Step 11

Go to Step 14

-

Go to Step 12

Go to Step 13

-

System OK

-

-

System OK

-

-

8

9

10

11

12

13

System OK

-

-

SSANGYONG  Y200

4E-84  ABS AND TCS

Step

1. Disconnect the connector from the EBCM.

2. Turn the ignition to ON.
3. Check the voltage between ground and terminal

17, and between ground and terminal 18.

Is the voltage within the specified value?

1. Turn the ignition to OFF.
2. Trace the WHT/RED wires between terminals 17

and 18 of the EBCM connector to fuse F7 and SB2
in the I/P fuse block.

3. Repair the open in this circuit.
Is the repair complete?

1. Turn the ignition ON.

2. Check the voltage at fuse SB2.
Is the voltage within the specified value?

Repair the power supply circuit for fuse SB2.
Is the repair complete?

1. Turn the ignition to OFF.

2. Check the resistance between ground and terminals

16 and 19 of the ABS harness EBCM connector.

Is the resistance equal to the specified value?

Examine terminals 15, 16, 17, 18 and 19 of the EBCM
connector.
Is there a defective terminal?

Repair the defective terminal or replace the connector
or wiring harness, as required.

Is the repair complete?
Repair the defective ground connection.

Is the repair complete?

1. Install the scan tool.
2. Clear all DTCs.

3. Road test the vehicle.
Does DTC 800 set again?

Replace the ABS unit.

Is the repair complete?
1. Examine the wiring harness and connectors for

causes of intermittent problems.

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

DTC 800 - Low Voltage Fault (Cont’d)

Action

Yes

No

Value

14

15

16

System OK

Go to Step 17

-

Go to Step 20

Go to Step 21

-

17

System OK

Go to Step 22

-

System OK

-

-

Go to Step 23

Go to Step 24

-

System OK

-

-

System OK

-

-

18

19

20

21

22

23

Go to Step 19

-

0 

Ω

Go to Step 16

-

11 - 14 V

System OK

-

-

Go to Step 18

-

11 - 14 V

24

SSANGYONG  Y200

4E-86  ABS AND TCS

DIAGNOSTIC TROUBLE CODE (DTC) 550 - EBCM INTERNAL FAULT

YAD4E270

Circuit Description

The ABS control module performs various diagnostic
checks on itself. If it finds a problem, it sets DTC 550.

Diagnosis

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

Cause

•

A connector terminal is corroded.

•

The EBCM is malfunctioning.

Action Taken When the DTC Sets

ABS is disabled, and the ABS warning lamp is turned
ON. If the failure is intermittent, the control module will
enable the system at the next ignition cycle and will
store a history DTC 550.

Test Description

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

3. This step begins the testing for a poor voltage or

ground connection.

Diagnostic Aids

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