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9-31
COOLING SYSTEM
–
+
ELEC
EBS01086
EBS01088
YES
NO
The radiator fan motor
is faulty and must be
repaired.
4. Radiator fan motor
•
•
Disconnect the radiator fan motor coupler
from the wire harness.
Connect the battery (DC 12 V) as shown.
Positive tester probe
→
deep blue
Negative tester probe
→
black/blue
1
1
1
3
2
1
2
• Does the radiator fan motor turn?
DL
12V
B/L
DL
B/L
YES
NO
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
• Remove the thermo switch from the radi-
ator.
• Connect the pocket tester (
Ω ×
1) to the
thermo switch
as shown.
• Immerse the thermo switch in a container
• Place a thermometer in the coolant.
• Slowly heat the coolant, then let it cool
down to the specified temperature.
• Check the thermo switch 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
filled with coolant
2
.