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