Checking the Condenser Fan
Checking the condenser fan
Checking fuses
- Ignition off.
Check fuse 15 (30 A) in the integrated relay / fusebox in the engine compartment.
Is the fuse intact?
Yes - Checking voltage
No - Checking for a short-circuit
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Checking voltage
- Ignition off
- Disconnect the condenser fan connector
- ECC control module connected.
Connect a voltmeter between ground (0 V) and condenser fan connector terminal 2.
- Engine running
- The blower fan switch must not be in position 0
- The voltmeter should read approximately battery voltage when the air conditioning (A/C) button is in the ON position (the green LED is lit).
Is the voltage OK?
Yes - Replacing the component
No - Checking the condenser fan
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Replacing the component
The fault is in the condenser fan.
- Replace the condenser fan according to Condenser fan motor Service and Repair.
Select "Continue" when the component has been replaced.
Continue - Verification
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Checking the condenser fan
- Ignition off
- Disconnect relay 2/13 for the condenser fan
- Connect the condenser fan connector.
Bridge across terminals 3 and 5 on the base socket for the condenser fan.
The condenser fan should start if the wiring for the condenser fan relay is OK.
Does the condenser fan start?
Yes - Checking voltage
No - Checking for an open-circuit
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Checking for an open-circuit
- Disconnect the battery negative lead.
Check the following cables for an open-circuit according to according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault :
- the cable between fuse 15 (30 A) and terminal 5 on the base socket for the condenser fan
- the cable between terminal 3 on the base socket for the condenser fan relay and terminal 2 on the connector for the condenser fan.
Is there an open-circuit in any of the cables?
Yes - Verification
No - Checking ground
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Checking ground
- Ignition off
- The condenser fan relay 2/13 must be disconnected from the base socket.
Connect an ohmmeter between terminal 2 on the base socket for the condenser fan relay (0 V) and the ground terminal.
The voltmeter should read approximately 0 ohms.
OK - Checking voltage
Not OK - Checking for an open-circuit
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Checking voltage
- Ignition off.
Connect a voltmeter between terminal 2 (0 V) and terminal 1 on the base socket for the condenser fan.
- Start the engine
- The blower fan switch must not be in position 0
- The voltmeter should read approximately battery voltage when the air conditioning (A/C) button is in the ON position (the green LED is lit)
- The voltmeter should read approximately 0.8 V when the air conditioning (A/C) button is in the OFF position (the orange LED is lit).
Is the voltage OK in both cases?
Yes - Replacing the component
No - Checking for an open-circuit
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Checking for an open-circuit
Check the following cables for an open-circuit according to according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault :
- the cable between terminal 2 on the base socket for the condenser fan relay (0 V) and the ground terminal.
Select "Continue" when the fault has been remedied.
Continue - Verification
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Replacing the component
- Replace the condenser fan relay.
Select "Continue" when the component has been replaced.
Continue - Verification
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Checking for an open-circuit
Check the following cables for an open-circuit according to according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault :
- the cable between the junction point in the pressure switch and terminal 1 on the base socket for the condenser fan relay.
Select "Continue" when the fault has been remedied.
Continue - Verification
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Checking for a short-circuit
- Disconnect the battery negative lead.
- Disconnect the condenser fan connector.
Check the following cables for a short-circuit according to according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault :
- the cable between fuse 15 (30 A, negative side) and terminal 5 on the base socket for the condenser fan relay
- the cable between terminal 3 on the base socket switch for the condenser fan relay and terminal 2 on the connector for the condenser fan.
Is there a short-circuit to ground in any of the cables?
Yes - Verification
No - Replacing the component
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Replacing the component
- Replace fuse 15 (30 A) in the integrated relay / fusebox in the engine compartment.
Select "Continue" when the component has been replaced.
Continue - Verification
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Verification
Verification
Hint: Check after repair that the fault has been rectified.
- Ignition off.
- Connect the connectors, reinstall components etc.
- ECC control module connected.
- Engine running.
- A/C switch ON (green LED lit).
Does the symptom recur?
Yes - VERIFICATION FAILED
No - VERIFIED
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VERIFIED - FAULT FOUND
VERIFICATION FAILED - Fault-tracing information
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Fault-tracing information
Information
Fault-tracing information
The fault should be diagnosed and remedied. Since this is not the case the fault-tracing process has failed.
Complete the fault-tracing for those fault or try again.
Do you want to terminate fault-tracing at this time?
Yes - FAULT-TRACING FAILED
No - Attempt New Test
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Attempt New Test - Checking fuses
FAULT-TRACING FAILED - FAULT-TRACING FAILED
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