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Test results |
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Fan 3 wiring |
Check for the presence of short circuit to Vbatt |
Go to Step 2 |
Presence of short circuit to Vbatt. |
Restore correct insulation to battery positive |
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Fan 3 wiring |
Check for short circuits to earth |
Go to Step 3 |
Presence of short circuit to earth |
Restore correct insulation to earth |
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Fan 3 wiring |
Check for an open circuit |
Go to Step 4 |
Presence of open circuit |
Restore the correct connections |
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Cooling fan relay |
Check that the cooling fan relay is receiving the correct power supply |
Go to Step 5 |
Cooling fan relay supply not correct |
Restore the correct cooling fan relay supply |
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Cooling fan relay |
Check that the cooling fan relay is working correctly See E5020 |
End of diagnosis |
Cooling fan relay not working correctly |
Replace the cooling fan relay |