Service manual

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ELEC
COOLING SYSTEM
EBS01086
YES
NO
YES
NO
EBS01088
4. Radiator fan motor
• Disconnect the radiator fan motor coupler
from the wire harness.
• Connect the battery (DC 12 V) as shown.
Positive battery lead
→
blue
1
Negative battery lead
→
black
2
• Does the radiator fan motor turn?
The radiator fan
motor is faulty and
must be replaced.
5. Circuit breaker (fan motor)
• Remove the circuit breaker from the wire
harness.
• Connect the pocket tester (
Ω ×
1) to the
circuit breaker.
Circuit breaker resistance
Zero
Ω
at 20 °C (68 °F)
Replace the circuit
breaker.
6. Thermo switch 1
• Remove the thermo switch 1 from the radi-
ator.
• Connect the pocket tester (
Ω ×
1) to the
thermo switch 1
1
as shown.
• Immerse the thermo switch 1 in a con-
tainer filled with coolant
2
.
• Place a thermometer
3
in the coolant.
• Slowly heat the coolant, then let it cool
down to the specified temperature.
• Check the thermo switch 1 for continuity at
the temperatures indicated below.
Test step
Coolant temperature
Continu-
ity
Thermo switch
1
Less than 98
±
3°C
(208.4
±
5.4 °F)
NO
2
More than 98
±
3 °C
(208.4
±
5.4 °F)
YES
3*
More than 92
±
3 °C
(197.6
±
5.4 °F)
YES
4*
Less than 92
±
3 °C.
(197.6
±
5.4 °F)
NO
Steps 1 & 2: Heating phase
Steps 3* & 4*: Cooling phase