Page 1057 of 2053

SSANGYONG MY2002
4F-74 ABS AND TCS
DIAGNOSTIC TROUBLE CODE (DTC) 12
VALVE RELAY CIRCUIT FAULT
KAA4F210
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.
Fail Action
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 re
sult in misdiagnosis, causing part replacement with the
reappearance of the malfunction.
Page 1058 of 2053

ABS AND TCS 4F-75
SSANGYONG MY2002
Step
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
DTC 12 - Valve Relay Circuit Fault
Action
Go to Step 3
System OK
Go to Step 4
System OK
Go to Step 7
System OK
Go to Step 9
System OK
Go to Step 11
System OK
Go to Step 13
System OK
Go to Step 15
System OK
System OKGo to Step 2
-
Go to Step 5
-
Go to Step 6
-
Go to Step 8
-
Go to Step 10
-
Go to Step 12
-
Go to Step 14
-
- -
-
-
-
≈ 0 Ω
-
≈ 0 Ω
-
11 - 14v
-
≈ 0 Ω
-
≈ 0 Ω
-
-
1. Use a scan tool to clear all DTCs.
2. Road test the vehicle.
Does DTC 12 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 EF 22.
Is fuse EF22 blown?
1. Check for a short circuit and repair it, if necessary.
2. Replace fuse EF 21.
Is the repair complete?
1. Disconnect the valve relay.
2. Check the resistance between the valve relay
connector terminal 86 and terminal 2 of EBCM.
Is the resistance equal to the specified value?
Repair the open circuit between the valve relay
connector terminal 86 and terminal 2 of EBCM.
Is the repair complete?
Check the resistance between the valve relay connec-
tor terminal 85 and terminal 37 of EBCM.
Is the resistance equal to the specified value?
Repair the open circuit between the valve relay
connector terminal 85 and terminal 37 of EBCM.
Is the repair complete?
Check the voltage between the valve relay connector
terminal 30 and ground.
Is the voltage equal to the specified value?
Repair the open circuit between the valve relay
connector terminal 30 and fuse EF21.
Is the repair complete?
Check the resistance between the valve relay connec
tor terminal 87 and terminal 10 of hydraulic modulator.
Is the resistance equal to the specified value?
Replace the valve relay.
Is the repair complete?
1. Disconnect the EBCM.
2. Check the resistance between terminal 28 and 29
of EBCM and ground G303.
Is the resistance equal to the specified value?
Repair the open circuit between the valve relay
connector terminal 87 and terminal 14 of hydraulic
modulator.
Is the repair complete?
Replace the ABS unit.
Is the repair complete?
Value(s) Yes No
Page 1059 of 2053

SSANGYONG MY2002
4F-76 ABS AND TCS
DIAGNOSTIC TROUBLE CODE (DTC) 24
PUMP MOTOR OR PUMP MOTOR RELAY FAULT
KAA4F220
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 to verify motor
operation.
Diagnosis
This DTC sets when the EBCM detects B+ without mo
tor relay activation or if the EBCM does not detect B+
after motor relay activation.
Cause(s)
There is a faulty terminal in the pump motor connector.
There is a faulty terminal in EBCM connector.
There is a problem in the ABS wiring harness.
There is high resistance in the chassis ground.
The EBCM is defective.
There is a problem in the wiring from the pump motor
connector to the motor.Fail Action
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 re-
sult in misdiagnosis, causing part replacement with the
reappearance of the malfunction.
Page 1060 of 2053

ABS AND TCS 4F-77
SSANGYONG MY2002
Step
1
2
3
4
5
6
7
8
9
10
11
12
13
14
DTC 24 - Pump Motor or Pump Motor Relay Fault
Action
Go to Step 3
System OK
Go to Step 4
System OK
Go to Step 7
System OK
Go to Step 9
System OK
Go to Step 11
System OK
Go to Step 13
System OK
Go to Step 15
System OKGo to Step 2
-
Go to Step 5
-
Go to Step 6
-
Go to Step 8
-
Go to Step 10
-
Go to Step 12
-
Go to Step 14
Go to Step 14 -
-
-
-
≈ 0 Ω
-
≈ 0 Ω
-
11 - 14v
-
≈ 0 Ω
-
≈ 0 Ω
-
1. Use a scan tool to clear all DTCs.
2. Road test the vehicle.
Does DTC 24 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 EF 27.
Is fuse EF27 blown?
1. Check for a short circuit and repair it, if necessary.
2. Replace fuse EF 27.
Is the repair complete?
1. Disconnect the motor relay.
2. Check the resistance between the motor relay
connector terminal 86 and terminal 2 of EBCM.
Is the resistance equal to the specified value?
Repair the open circuit between the motor relay
connector terminal 86 and terminal 2 of EBCM.
Is the repair complete?
Check the resistance between the motor relay connec-
tor terminal 85 and terminal 7 of EBCM.
Is the resistance equal to the specified value?
Repair the open circuit between the motor relay
connector terminal 85 and terminal 7 of EBCM.
Is the repair complete?
Check the voltage between the motor relay connector
terminal 30 and ground.
Is the voltage equal to the specified value?
Repair the open circuit between the motor relay
connector terminal 30 and fuse EF27.
Is the repair complete?
Check the resistance between the motor relay connec
tor terminal 87 and terminal 19 of EBCM.
Is the resistance equal to the specified value?
Replace the motor relay.
Is the repair complete?
1. Disconnect the hydraulic modulator.
2. Check the resistance between the motor relay
connector terminal 87 and terminal 14 of hydraulic
modulator.
Is the resistance equal to the specified value?
1. Repair the open circuit between the motor relay
connector terminal 87 and terminal 14 of hydraulic
modulator.
2. Road test the vehicle.
Does DTC 24 clear?
Value(s) Yes No
Page 1061 of 2053
SSANGYONG MY2002
4F-78 ABS AND TCS
Step
15
16
17
18Action
Go to Step 6
System OK
System OK
System OKGo to Step 16
-
Go to Step 18
- ≈ 0 Ω
-
-
-
1. Disconnect the hydraulic modulator.
2. Check the resistance between the motor connector
terminal 13 and ground G205.
Is the resistance equal to the specified value?
Repair the open circuit between the motor relay
connector terminal 13 and ground G205.
Is the repair complete?
1. Replace the hydraulic modulator.
2. Road test the vehicle.
Does DTC 24 clear?
Replace the ABS unit.
Is the repair complete?
DTC 24 - Pump Motor or Pump Motor Relay Fault (Cont’d)
Value(s) Yes No
Page 1062 of 2053
ABS AND TCS 4F-79
SSANGYONG MY2002
BLANK
Page 1063 of 2053

SSANGYONG MY2002
4F-80 ABS AND TCS
DIAGNOSTIC TROUBLE CODE (DTC) 27
STOPLAMP SWITCH FAULT
KAA4F230
Circuit Description
When the brake pedal is pressed, the contacts on the
brake light switch close to illuminate the brake lights.
Battery voltage is also applied to terminal 48 of the
elec-tronic brake control module (EBCM), which signals
the ABS controller that the brakes are applied and ABS
may be needed. Without this, signals from a wheel
speed sensor that may indicate the need for ABS
intervention are questionable. When the brake pedal is
not pressed, the EBCM terminal 48 is grounded through
the stoplamps.
Diagnosis
This procedure will check whether there is no output or
constant output from the stoplamp switch and will deter-
mine the cause as a faulty switch or a problem in the
circuitry.Cause(s)
The ground connection or the positive connection
at the EBCM has failed.
There is an open, short to ground, or short to positive
in the vehicle wiring.
The stoplamp switch has failed.
Fail Action
The system records a DTC 27. ABS operation is not
dis-abled.
Test Description
The number(s) below refer to step(s) on the diagnostic
table.
12. This step begins the process of troubleshooting
stoplamps that are always on.
Diagnostic Aids
Inspect the wiring and the connectors carefully and
thoroughly. Failure to do so could result in misdiagnosis,
causing part replacement with the reappearance of the
malfunction.
Page 1064 of 2053

ABS AND TCS 4F-81
SSANGYONG MY2002
Step
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
DTC 27 - Stoplamp Switch Fault
Action
Go to Step 12
Go to Step 3
System OK
Go to Step 6
System OK
Go to Step 7
System OK
Go to Step 10
System OK
Go to Step 12
System OK
Go to Step 13
System OK
Go to Step 16
System OKGo to Step 2
Go to Step 4
-
Go to Step 5
-
Go to Step 8
-
Go to Step 9
-
Go to Step 11
-
Go to Step 14
-
Go to Step 15
- -
-
-
11 - 14v
-
-
-
11 - 14v
-
11 - 14v
-
-
-
11 - 14v
-
Observe the stoplamps when the brakes are applied.
Do the stoplamps turn on?
Check fuse EF11.
Is fuse EF11 blown?
1. Check for a short circuit and repair it, if necessary.
2. Replace fuse EF11
Is the repair complete?
Check the voltage at fuse EF11.
Is the voltage equal to the specified value?
Repair the power supply circuit for fuse EF11.
Is the repair complete?
Check the voltage at fuse F18.
Is fuse F18 blown?
1. Check for a short circuit between terminal 8 of
connector C104 and fuse F18 in the I/P fuse block
and repair it, if necessary.
2. Replace fuse F18.
Is the repair complete?
Check the voltage at terminal B2 of the stoplamps
switch.
Is the voltage equal to the specified value?
Repair the open circuit between fuse F18 and termi-
nal B2 of the stoplamp switch.
Is the repair complete?
With the brakes applied, check the voltage at
terminal B4 of the stoplamp switch.
Is the voltage equal to the specified value?
Replace the stoplamp switch.
Is the repair complete?
1. Disconnect the electronic brake control module
(EBCM) connector.
2. Visually inspect the EBCM and its connector for
damaged pins or terminals.
Are there any damaged pins or terminals?
Repair the damaged pins or terminals.
Is the repair complete?
1. With the EBCM connector disconnected, applied
the brake.
2. Check the voltage at terminal 48 of the EBCM.
Is the voltage equal to the specified value?
Repair the open circuit between the B4 of the stoplamp
switch and terminal 48 of the EBCM connector.
Is the repair complete?
Value(s) Yes No