SsangYong Korando III (2010 year). Manual — part 353
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(3) Operating Steps
Pre-Glow: Step 1
▶
If normal communication with the ECU is established 2 seconds after the power is supplied to the IGN
terminal from the battery, the GCU supplies the battery power to raise the temperature of the glow plug
to 1000℃ by the preheating request from the engine ECU before starting.
- The time for pre-heating is controlled by the ECU.
If the input voltage (VB) is 11.5 V or less, GCU supplies the battery voltage for preheating time (T1).
If the input voltage (VB) is greater than 11.5 V, GCU supplies the voltage of 11.5 V for preheating time
(T1).
-
-
The preheating time may vary according to the conditions.
Input voltage
VB (V)
Pre-heating time T1
(sec)
6 8.27
7 5.8
8 4.1
9 3.15
10 2.4
11 1.95
≥ 11.5
1.9
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During cranking: Step 2 and step 3
▶
Step 2: If the ECU receives the cranking signal after pre-heating (step 1), the GCU supplies the
voltage of 6.8 V for 1 sec to raise the temperature to 1,100℃.
Step 3: The GCU supplies the voltage of 5.1 V to keep the temperature at 1,000°C.
1.
2.
Under fixed temperature: The AQGS unit supplies power for 30 seconds (Step 1 + Step 3) if no
cranking signal is received after the step 1.
During cranking: The step 3 is started after the step 2.
*
*
Post-glow: Step 4:
▶
The post-heating is for reducing HC/CO after the engine is started. If the time for post-heating exceeds
180 sec., the GCU unit cuts off the power to each glow plug even if there is preheating request from the
engine ECU.
Emergency glow
▶
If no CAN signal is received for 4 seconds from the engine ECU after the IGN ON signal is input, the
GCU performs emergency preheating (Step 3) for 30 seconds.
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Normal operating mode
▶
This shows the components of preheating system in the pre-heating and the post-heating steps.
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When there is no engine cranking signal after turning the ignition key ON
▶
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