SsangYong: Engine Euro 4. Instruction - page 30

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

7

2820

PRE - HEATING SYSTEM

D27DTP/D27DT (EU4) SM - 2006.08

D27DTP/D27DT (EU4)

ENGINE

FUEL

I

N

T

AKE

EXHAUST

PRE-HEA

TING

LUB

COOLING

SWITCHABLE

ECU

DIAGNOSIS

2. When there is no engine cranking signal after turning the ignition key ON

Emergency Glow Mode

If there is no incoming CAN signal from engine ECU for approx. 4 seconds, AQGS initiates the emergency glow
mode. In this mode, the AQGS applies the voltage (5.1 V) to the glow plug for 30 seconds.

3rd step

1st step

Temperature fixing mode of glow plug: 30 sec.

Temperature of

glow plug

CAN signal from ECU

Engine cranking 1

Engine stopped 0

Preheat request

Post-heating timer

ING ON

Engine running 2

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

8

2820

PRE - HEATING SYSTEM

D27DTP/D27DT (EU4) SM - 2006.08

D27DTP/D27DT (EU4)

5. NEW DTCS FOR AQGS (ADVANCED QUICK GLOW SYSTEM)

Engine

Malfunction

Indicator

light

P2674

P2675

#1 Glow Plug
Short (Battery)

#2 Glow Plug
Short (Battery)

- NGK glow module (AQGS: Advanced Quick Glow-

ing System)

- It is detected by AQGS which then sends the mes-

sage to ECU through CAN.

- The electrical problem is occurred in AQGS.

- Diagnosis criteria in AQGS

• Plug short: voltage > 6V, current = 0A

• Plug short (GND): voltage = 0V

• Plug short (battery): voltage = Battery voltage

• FET defective, FET short (GND): voltage = 0V,

current = 0A

• Abnormal input voltage: 6V < input voltage <

16V

• Abnormal communication: Communication error

for over 1 sec., abnormal data

- Actions

• Check glow plug for defect (measure the resis-

tance of unit).

• Check the connector and wiring harnesses.

• Visually check the unit.

• Replace the unit if necessary.

• Check the CAN line.

• Check the IG1 voltage.

• Check the battery voltage.

- NGK glow module (AQGS: Advanced Quick Glowing

System)

- It is detected by AQGS which then sends the mes-

sage to ECU through CAN.

- The electrical problem is occurred in AQGS.

- Diagnosis criteria in AQGS

• Plug short: voltage > 6V, current = 0A

• Plug short (GND): voltage = 0V

• Plug short (battery): voltage = Battery voltage

• FET defective, FET short (GND): voltage = 0V,

current = 0A

• Abnormal input voltage: 6V < input voltage < 16V

• Abnormal communication: Communication error

for over 1 sec., abnormal data

- Actions

• Check glow plug for defect (measure the resis-

tance of unit).

• Check the connector and wiring harnesses.

• Visually check the unit.

• Replace the unit if necessary.

• Check the CAN line.

• Check the IG1 voltage.

• Check the battery voltage.

DTC

Trouble

Limp

Home

Mode

Delayed

Engine

Stop

Torque

Reduction

(max.

20%)

Help

Torque

Reduction

(max.

50%)

Immedi-

ately

Engine

Stop

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

9

2820

PRE - HEATING SYSTEM

D27DTP/D27DT (EU4) SM - 2006.08

D27DTP/D27DT (EU4)

ENGINE

FUEL

I

N

T

AKE

EXHAUST

PRE-HEA

TING

LUB

COOLING

SWITCHABLE

ECU

DIAGNOSIS

Engine

Malfunction

Indicator

light

P2671

P2672

#3 Glow Plug
Short (Battery)

#3 Glow Plug
Short (Battery)

- NGK glow module (AQGS: Advanced Quick Glowing

System)

- It is detected by AQGS which then sends the mes-

sage to ECU through CAN.

- The electrical problem is occurred in AQGS.

- Diagnosis criteria in AQGS

• Plug short: voltage > 6V, current = 0A

• Plug short (GND): voltage = 0V

• Plug short (battery): voltage = Battery voltage

• FET defective, FET short (GND): voltage = 0V,

current = 0A

• Abnormal input voltage: 6V < input voltage < 16V

• Abnormal communication: Communication error

for over 1 sec., abnormal data

- Actions

• Check glow plug for defect (measure the resistance

of unit).

• Check the connector and wiring harnesses.

• Visually check the unit.

• Replace the unit if necessary.

• Check the CAN line.

• Check the IG1 voltage.

• Check the battery voltage.

- NGK glow module (AQGS: Advanced Quick Glowing

System)

- It is detected by AQGS which then sends the mes-

sage to ECU through CAN.

- The electrical problem is occurred in AQGS.

- Diagnosis criteria in AQGS

• Plug short: voltage > 6V, current = 0A

• Plug short (GND): voltage = 0V

• Plug short (battery): voltage = Battery voltage

• FET defective, FET short (GND): voltage = 0V,

current = 0A

• Abnormal input voltage: 6V < input voltage < 16V

• Abnormal communication: Communication error

for over 1 sec., abnormal data

- Actions

• Check glow plug for defect (measure the resis-

tance of unit).

• Check the connector and wiring harnesses.

• Visually check the unit.

• Replace the unit if necessary.

• Check the CAN line.

• Check the IG1 voltage.

• Check the battery voltage.

DTC

Trouble

Limp

Home

Mode

Delayed

Engine

Stop

Torque

Reduction

(max.

20%)

Help

Torque

Reduction

(max.

50%)

Immedi-

ately

Engine

Stop

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

10

2820

PRE - HEATING SYSTEM

D27DTP/D27DT (EU4) SM - 2006.08

D27DTP/D27DT (EU4)

Engine

Malfunction

Indicator

light

P2673

P0670

P0683

P1683

P0618
P0619

P062F

P066A

P066B

P066C

P066D

P066E

P066F

P067A

P067B

P067C

P067D

#5 Glow Plug Short (Battery)

Defective Power Supply of
Glow Plug Controller
Defective CAN Communiction
of Glow Plug Controller
Defective CAN Communiction
of Glow Plug Controller
Multi Calibration not Performed
Multi Calibration Performing
error
Multi Calibration Memory Error
Internal Malfunction in #1
Glow Plug Controller

Internal Short in #1 Glow
Plug Controller

Internal Malfunction in #2
Glow Plug Controller

Internal Short in #2 Glow
Plug Controller

Internal Malfunction in #3
Glow Plug Controller

Internal Short in #3 Glow
Plug Controller

Internal Malfunction in #4
Glow Plug Controller

Internal Short in #4 Glow
Plug Controller

Internal Malfunction in #5
Glow Plug Controller

Internal Short in #5 Glow
Plug Controller

- NGK glow module (AQGS: Advanced

Quick Glowing System)

- It is detected by AQGS which then sends

the message to ECU through CAN.

- The electrical problem is occurred in AQGS.
- Diagnosis criteria in AQGS

• Plug short: voltage > 6V, current = 0A
• Plug short (GND): voltage = 0V
• Plug short (Battery): voltage = Bat-

tery voltage

• FET defective, FET short (GND): volt-

age = 0V, current = 0A

• Abnormal input voltage: 6V < input

voltage < 16V

• Abnormal communication: Communica-

tion error for over 1 sec., abnormal data

- Actions

• Check glow plug for defect (measure

the resistance of unit).

• Check the connector and wiring harnesses.
• Visually check the unit.
• Replace the unit if necessary.
• Check the CAN line.
• Check the IG1 voltage.
• Check the battery voltage.

- Details: refer to P2673.

- GCU’s CAN signal is intermittently defective.

- No GCU CAN signal
- Details: refer to P2673.
- Perform multi calibration again.
- Perform multi calibration again.

- Perform multi calibration again.
- Cylinder #1 (Glow Plug #1)
- Details: refer to P2673.
- Cylinder #1 (Glow Plug #1)
- Details: refer to P2673.
- Cylinder #2 (Glow Plug #2)
- Details: refer to P2673.
- Cylinder #2 (Glow Plug #2)
- Details: refer to P2673.
- Cylinder #3 (Glow Plug #3)
- Details: refer to P2673.
- Cylinder #3 (Glow Plug #3)
- Details: refer to P2673.
- Cylinder #4 (Glow Plug #4)
- Details: refer to P2673.
- Cylinder #4 (Glow Plug #4)
- Details: refer to P2673.
- Cylinder #5 (Glow Plug #5)
- Details: refer to P2673.
- Cylinder #5 (Glow Plug #5)
- Details: refer to P2673.

DTC

Trouble

Limp

Home

Mode

Delayed

Engine

Stop

Torque

Reduction

(max.

20%)

Help

Torque

Reduction

(max.

50%)

Immedi-

ately

Engine

Stop

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