FAN CONTROL MODULE INSPECTION [L3 Turbo]SM2444656
FAN CONTROL MODULE INSPECTION [L3 Turbo]

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1.Remove the charge air cooler duct. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L3 Turbo].)

2.Connect the M-MDS to the DLC-2.
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3.Start and warm up the engine.

4.Monitor the engine coolant temperature with the M-MDS.

5.Measure the voltage at terminal A of the fan control module connector (2 terminals) as shown in the table.
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• If not within the specification, inspect the input signals from the following parts.
― Crankshaft Position (CKP) sensor
― Engine Coolant Temperature (ECT) sensor
― Throttle Position (TP) sensor
― Refrigerant pressure switch (middle)

Fan control module No.1

Inspection

Result

Condition

A/C

Engine coolant temp.

IG SW ON
OFF
95 °C {203 °F} or less
0 V (Fan stops.)
IG SW ON (Idling)
OFF
95 °C {203 °F} or less
0 V (Fan stops.)
IG SW ON (Idling)
ON
95 °C {203 °F} or less
4.1—6.2 V
IG SW ON (Idling)
OFF
100 °C {212 °F} or more
4.1—14.6 V

Fan control module No.2

Inspection

Result

Condition

A/C

Engine coolant temp.

IG SW ON
OFF
95 °C {203 °F} or less
0 V (Fan stops.)
IG SW ON (Idling)
OFF
95 °C {203 °F} or less
0 V (Fan stops.)
IG SW ON (Idling)
ON
95 °C {203 °F} or less
5.5 V—10.3 V
IG SW ON (Idling)
OFF
100 °C {212 °F} or more
4.1—14.6 V

6.If all the above parts are normal, replace the fan control module.