Suzuki XL7 2007 Service Manual page 761

Step
1. Remove the transmission oil cooler lines from the radiator.
2. Pressure test the cooling system. Refer to "Cooling
23 System Leak Testing".
3. Inspect the transmission oil cooler for coolant.
Is coolant present?
1. Replace the radiator. Refer to "Radiator Replacement".
2. Service the automatic transmission. Refer to "Engine
24
Coolant/Water in Transmission: ".
Is the repair complete?
Install the cooler lines to the radiator.
25
Is the action complete?
Repair the engine no crank condition. Refer to "Engine Will
26 Not Crank - Crankshaft Will Not Rotate: ".
Is the repair complete?
Repair the engine overheating condition.
27
Is the repair complete?
Repair the engine internal coolant leak. Refer to "Coolant in
28 Combustion Chamber: ".
Is the repair complete?
Repair the engine knock. Refer to "Lower Engine Noise,
29 Regardless of Engine Speed: ".
Is the repair complete?
Repair the combustion pressure in the cooling system
30 problem. Refer to "Cylinder Leakage Test: ".
Is the repair complete?
Operate the system in order to verify the repair.
31
Did you find and correct the condition?
Thermostat Diagnosis
Special tool
J 24731 188 Tempilstick
J 24731 206 Tempilstick
The coolant thermostat can be tested using a temperature (tempil) stick. The temperature stick is a pencil-like device
which has a wax material containing certain chemicals that melt at a given temperature. Temperature sticks can be
used to determine a thermostat's operating range by rubbing 87°C (188°F) and 97°C (206°F) sticks on the outlet
coolant pipe.
1. Use a tempilstick in order to find the opening and the closing temperatures of the thermostat.
– J 24731 188 tempilstick melts at 87°C (188°F). The thermostat should begin to open at 90°C (194°F).
– J 24731 206 tempilstick melts at 97°C (206°F). The thermostat should be fully open at 107°C (225°F).
2. Replace the thermostat if it does not operate properly between this temperature range.
Action
Engine Cooling System:
Yes
Go to Step 24 Go to Step 25
Go to Step 31
Go to Step 31
Go to Step 31
Go to Step 31
Go to Step 31
Go to Step 31
Go to Step 31
System OK Go to Step 2
1F-18
No
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