Engine Control System (4HK1) 1A-143
4
Start the engine and wait until engine is fully warm
upped while observing the Coolant Temperature
parameter with a scan tool.
Does the scan tool indicate more than the
specified value?
110
°
C
(230
°
F)
Go to Step 6
Go to Step 5
5
Ask the driver if overheat is caused by low engine
coolant level, etc.
If engine overheat has experienced, the engine
must be inspected and repaired as necessary.
Did you complete the action?
—
Go to Step 7
—
6
1.
Test the engine coolant temperature (ECT)
sensor at various temperature levels to
evaluate the possibility of a skewed sensor.
2.
Replace the ECT sensor as necessary.
Did you find and correct the condition?
—
Go to Step 7
Go to Diagnostic
Aids
7
1.
Reconnect all previously disconnected
harness connector(s).
2.
Clear the DTCs with a scan tool.
3.
Turn OFF the ignition for 30 seconds.
4.
Start the engine and wait until engine is fully
warm upped while observing the Coolant
Temperature parameter with a scan tool.
Does the scan tool indicate more than the
specified value?
110
°
C
(230
°
F)
Go to Step 2
Go to Step 8
8
Observe the DTC Information with a scan tool.
Are there any DTCs that you have not
diagnosed?
—
Go to DTC List
System OK
Step
Action
Value(s)
Yes
No
LG4HKED-WE-0871.book 143
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２００７年１１月２９日 木曜日 午後６時２９分
