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.

R.H.D

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L.H.D

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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*1
95 °C {203 °F} or less
4.1 V
IG SW ON (Idling)
ON*2
95 °C {203 °F} or less
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*1
95 °C {203 °F} or less
5.5 V
IG SW ON (Idling)
ON*2
95 °C {203 °F} or less
10.3 V
IG SW ON (Idling)
OFF
100 °C {212 °F} or more
4.1—14.6 V

*1  :Refrigerant pressure switch (middle) is off.
*2  :Refrigerant pressure switch (middle) is on.

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