SsangYong: Engine Euro 4. Manual - part 84

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

10

DIAGNOSIS

TCU

Cause:

- The No. 7 solenoid valve controls the operation of the torque

converter clutch.

- The No. 7 solenoid valve circuit is open.

- The solenoid valve connection is short to B+.

Symptom: - The No. 7 solenoid valve stops its operation (OFF).

- The torque converter clutch cannot be locked.

Action:

- Check No. 7 solenoid valve wiring and connector (especially,

its ground condition).

- Specified resistance value: 22 ~ 30

Ω

- Check TCU connector for proper connection and its terminal for

bend or deformation.

- Replace No. 7 solenoid valve if necessary.

- Replace TCU if necessary.

- DTC disappears after turning ignition from OFF to ON.

Cause:

- The No. 1 solenoid valve operates with the No. 2 solenoid valve

to control the oil flow for the 1-2 shift valve.

- The No. 1 solenoid valve circuit is short to ground.

Symptom: - The No. 1 solenoid valve is OFF.

- Enters into the emergency mode.

Action:

- Check No. 1 solenoid valve wiring and connector (especially its

ground condition).

- Specified resistance value: 22 ~ 30

Ω

- Check TCU connector for proper connection and its terminal for

bend or deformation.

- Replace No.1 solenoid valve if necessary.

- Replace TCU if necessary.

- DTC disappears after turning ignition from OFF to ON.

Cause:

- The No. 2 solenoid valve operates with the No. 1 solenoid valve

to control the oil flow for the 2-3 shift valve.

- The No. 2 solenoid valve circuit is short to ground.

Symptom: - The No. 2 solenoid valve is OFF.

- Enters into the emergency mode.

Action:

- Check No. 2 solenoid valve wiring and connector (especially its

ground condition).

- Specified resistance value: 22 ~ 30

Ω

- Check TCU connector for proper connection and its terminal for

bend or deformation.

- Replace No. 2 solenoid valve if necessary.

- Replace TCU if necessary.

- DTC disappears after turning ignition from OFF to ON.

DTC Code

No. 7 solenoid valve
open

No. 1 solenoid valve
short

No. 2 solenoid valve
short

Defective

Cause and Action

P1739

P1741

P1742

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

11

DIAGNOSIS

TCU

BRAKE

ECU

TCU

A/BAG

TC

RK-STICS

FFH

R/SENSOR

FA

T

C

TGS-LEVER

P/TRUNK

CCCS

Cause:

- The No. 3 solenoid valve operates with the No. 4 solenoid valve

to shift smoothly and control the shifting order.

- The No. 3 solenoid valve turns the clutch regulator valve ON

and OFF.

- The No. 3 solenoid valve circuit is short to ground.

Symptom: - The No. 3 solenoid valve is OFF.

- Shifting impression is poor.

Action:

- Check No. 3 solenoid valve wiring and connector (especially its

ground condition).

- Specified resistance value: 22 ~ 30

Ω

- Check TCU connector for proper connection and its terminal for

bend or deformation.

- Replace No. 3 solenoid valve if necessary.

- Replace TCU if necessary.

- DTC disappears after turning ignition from OFF to ON.

Cause:

- The No. 4 solenoid valve operates with the No. 3 solenoid valve

to shift smoothly and control the shifting order.

- The No. 4 solenoid valve turns the clutch regulator valve ON

and OFF.

- The No. 4 solenoid valve circuit is short to ground.

Symptom: - The No. 4 solenoid valve is OFF.

- Shifting impression is poor.

Action:

- Check No. 4 solenoid valve wiring and connector (especially its

ground condition).

- Specified resistance value: 22 ~ 30

Ω

- Check TCU connector for proper connection and its terminal for

bend or deformation.

- Replace No. 4 solenoid valve if necessary.

- Replace TCU if necessary.

- DTC disappears after turning ignition from OFF to ON.

Cause:

- The No. 5 solenoid valve is a variable solenoid valve to change

the pressure for shifting.

- The No. 5 solenoid valve circuit is short to ground.

Symptom: - The No. 4 solenoid valve is always OFF.

- Shifting impression is poor.

Action:

- Check No. 5 solenoid valve wiring and connector (especially,

its ground condition).

- Specified resistance value: 3.6 ~ 5.5

Ω

- Check TCU connector for proper connection and its terminal for

bend or deformation.

- Replace No.5 solenoid valve if necessary.

- Replace TCU if necessary.

- DTC disappears after turning ignition from OFF to ON.

DTC Code

No. 3 solenoid valve
short

No. 4 solenoid valve
short

No. 5 solenoid valve
short

Defective

Cause and Action

P1743

P1744

P1745

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

12

DIAGNOSIS

TCU

Cause:

- The No. 6 solenoid valve is used to set the hydraulic line pres-

sure to HIGH/LOW level.

- The No. 6 solenoid valve circuit is short to ground.

Symptom: - The hydraulic line pressure is high. (No. 6 solenoid valve stops

its operation)

- Cannot to shift to 1st gear position.

Action:

- Check No. 6 solenoid valve wiring and connector (especially,

its ground condition).

- Specified resistance value : 22 ~ 30

Ω

- Check TCU connector for proper connection and its terminal for

bend or deformation.

- Replace No. 6 solenoid valve if necessary.

- Replace TCU if necessary.

- DTC disappears after turning ignition from OFF to ON.

Cause:

- The No. 7 solenoid valve controls the operation of the torque

converter clutch.

- The No. 7 solenoid valve circuit is short to ground.

Symptom: - The No. 7 solenoid valve stops its operation (OFF).

- The torque converter clutch cannot be locked.

Action:

- Check No. 7 solenoid valve wiring and connector (especially,

its ground condition).

- Specified resistance value: 22 ~ 30

Ω

- Check TCU connector for proper connection and its terminal for

bend or deformation.

- Replace No. 7 solenoid valve if necessary.

- Replace TCU if necessary.

- DTC disappears after turning ignition from OFF to ON.

DTC Code

No. 6 solenoid valve
short

No. 7 solenoid valve
short

Defective

Cause and Action

P1746

P1747

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

13

DIAGNOSIS

TCU

BRAKE

ECU

TCU

A/BAG

TC

RK-STICS

FFH

R/SENSOR

FA

T

C

TGS-LEVER

P/TRUNK

CCCS

P2000

P2001

P2002

P2003

P2004

P2005

P2006

P2007

P2008

P200A

P200B

P200C

P2010

Faulty TCU internal watchdog test

Faulty TCU internal watchdog

function

Faulty TCU external watchdog test

Faulty TCU external watchdog func-
tion

Faulty TCU Clock

Faulty TCU RAM

Faulty TCU RAM CAN-Controller 1

Faulty TCU RAM CAN-Controller 2

Faulty TCU ROM

Faulty TCU EEPROM

Faulty TCU CPU (internal)

Faulty TCU program control

No TCU variant coding

• Self-diagnosis with IGN ON.

• Cycle the IGN switch from OFF to ON. Check and replace

TCU if the trouble still exists.

• Self-diagnosis.

• Cycle the IGN switch from OFF to ON. Check and replace

TCU if the trouble still exists.

• Self-diagnosis with IGN ON.

• Cycle the IGN switch from OFF to ON. Check and replace

TCU if the trouble still exists.

• Self-diagnosis.

• Cycle the IGN switch from OFF to ON. Check and replace

TCU if the trouble still exists.

• Self-diagnosis.

• Cycle the IGN switch from OFF to ON. Check and replace

TCU if the trouble still exists.

• Self-diagnosis with IGN ON.

• Cycle the IGN switch from OFF to ON. Check and replace

TCU if the trouble still exists.

• Self-diagnosis with IGN ON.

• Cycle the IGN switch from OFF to ON. Check and replace

TCU if the trouble still exists.

• Self-diagnosis with IGN ON.

• Cycle the IGN switch from OFF to ON. Check and replace

TCU if the trouble still exists.

• Self-diagnosis with IGN ON.

• When the TCU internal checksum is different from scan-

ner checksum.

• Cycle the IGN switch from OFF to ON. Check and replace

TCU if the trouble still exists.

• Self-diagnosis with IGN ON.

• Cycle the IGN switch from OFF to ON. Check and replace

TCU if the trouble still exists.

• Self-diagnosis.

• Check harness contact.

• Self-diagnosis.

• Check harness contact.

• Self-diagnosis with IGN ON.

• When the TCU coding is not exist.

• Check again after TCU coding.

Trouble

Code

Defectives

Action

DIAGNOSIS TROUBLE CODE OF DC5AT