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Engine Fails To Reach Normal Operating Temperature

WARNING: This page is about a different car, the 2007 Suzuki XL7. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC PROCEDURE - ENGINE FAILS TO REACH NORMAL OPERATING TEMPERATURE

Step Action Yes No
1
  1. Ensure that the cooling system is full.
  2. Allow the engine to cool.
  3. Start the engine.
  4. Turn the air conditioning system off.
  5. Inspect the engine cooling fan(s).

Is the electric cooling fan on?		 Go to Step 2 Go to Step 3
2
  1. Diagnose and repair the cooling fan system. Refer to COOLING FAN ALWAYS ON .
  2. Verify the customer complaint.

Does the engine still fail to reach normal operating temperature?		 Go to Step 3 System OK
3 Install the Scan Tool to the DLC. Compare the Scan Tool coolant temperature reading to the I/P cluster coolant temperature.
Is the I/P cluster coolant temperature close to the reading on the Scan Tool?		 Go to Step 5 Go to Step 4
4
  1. Diagnose and repair the coolant temperature gage system.
  2. Verify the customer complaint.

Does the engine still fail to reach normal operating temperature?		 Go to Step 5 System OK
5 Inspect the thermostat for proper operation. Refer to THERMOSTAT DIAGNOSIS .
Is the thermostat operating properly?		 Go to Step 1 Go to Step 6
6
  1. Replace the thermostat. Refer to THERMOSTAT REPLACEMENT .
  2. Verify the customer complaint.

Does the engine still fail to reach normal operating temperature?		 Go to Step 1 System OK
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