Inspection Procedure 12: Condenser Fan does not Operate. <Except for
4M40>
CIRCUIT OPERATION
If the A/C condenser fan does not operate when
the A/C condenser fan relay system may be defective.
TROUBLESHOOTING HINTS
- Malfunction of the engine-ECU <M/T>
- Malfunction of the engine-A/T-ECU <A/T>
- Malfunction of the condenser fan relay
- Malfunction of the condenser fan motor
- Damaged the wiring harness or connectors
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STEP 1. Check the A/C and outside/inside air selection
damper control motor operation.
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Q.
Do the A/C and outside/inside air selection damper control
motor work normally?
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 Go to Step 2.
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 Refer
to Inspection procedure 14 "Malfunction of the A/C-ECU power supply
system  ."
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STEP 2. Connector check: D-213 engine-ECU connector <4M41>,
D-212 engine-ECU connector <6G75-M/T> or engine-A/T-ECU connector
<6G75-A/T> and A-29 A/C condenser fan motor
connector
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Q.
Is the check result normal?
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Go to Step 3.
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Repair
the connector.
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STEP 3. Voltage measurement at A-29 A/C condenser fan motor
connector.
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(1)Disconnect the connector, and measure at the wiring
harness side.
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(2)Turn the ignition switch to the "ON" position.
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(3)Disconnect engine-ECU connector D-213 and earth terminal
39. <4M41>
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(4)Disconnect engine-ECU <6G75-M/T> or
engine-A/T-ECU <6G75-A/T> connector D-212 and earth terminal
17.
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(5)Measure the voltage between terminal 1 and body
earth.
OK: System voltage
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Q.
Is the check result normal?
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Go to Step 12.
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Go to Step 4.
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STEP 4. Connector check: A-10X A/C condenser fan relay connector
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Q.
Is the check result normal?
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Go to Step 5.
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Repair
the connector.
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STEP 5. Check the A/C condenser fan relay continuity.
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Refer to .
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Q.
Is the check result normal?
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Go to Step 6.
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Replace the rear window defogger
relay.
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STEP 6. Voltage measurement at A-10X A/C condenser fan relay connector.
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(1)Remove the relay, and measure at the junction block
side.
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(2)Measure the voltage between terminal 5 and body
earth.
OK: System voltage
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Q.
Is the check result normal?
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Go to Step 8.
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Go to Step 7.
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STEP 7. Check the wiring harness between A-10X A/C condenser fan relay
connector terminal No.5 and the fusible link (1).
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Prior to the wiring harness inspection, check joint
connector A-16, and repair if necessary.
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- Check the A/C condenser fan relay power supply line for open or short
circuit.
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Q.
Is the check result normal?
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The
trouble can be an intermittent malfunction (Refer to GROUP 00, How to Cope
with Intermittent Malfunction ).
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Repair
the wiring harness.
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STEP 8. Voltage measurement at A-10X A/C condenser fan relay connector.
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(1)Remove the relay, and measure at the junction block
side.
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(2)Turn the ignition switch to the "ON" earth
position.
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(3)Voltage between terminal 3 and body
earth.
OK: System voltage
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Q.
Is the check result normal?
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Go to Step 10.
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Go to Step 9.
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STEP 9. Check the wiring harness between A-10X A/C condenser fan relay
connector No.3 and ignition switch (IG2).
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Prior to the wiring harness inspection, check joint
connector A-15, intermediate connectors D-241, junction block connectors
D-401 and D-403 repair if necessary.
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- Check the A/C condenser fan relay power supply line for open
circuit.
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Q.
Is the check result normal?
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The
trouble can be an intermittent malfunction (Refer to GROUP 00, How to Cope
with Intermittent Malfunction ).
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Repair
the wiring harness.
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STEP 10. Check the wiring harness between A-10X A/C condenser fan relay
connector No.1 and D-213 engine-ECU connector No.39 <4M41>, D-212
engine-ECU connector <6G75-M/T> or engine-A/T-ECU connector
<6G75-A/T> No.17.
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Prior to the wiring harness inspection, check
intermediate connectors D-137, and repair if necessary.
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- Check the A/C condenser fan power supply line for open
circuit.
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Q.
Is the check result normal?
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Go to Step 11.
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Repair
the wiring harness.
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STEP 11. Check the wiring harness between A-10X A/C condenser fan relay
connector No.4 and A-29 A/C condenser fan motor connector
No.1.
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Prior to the wiring harness inspection, check joint
connector A-14, and repair if necessary.
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- Check the A/C condenser fan line for open or short circuit.
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Q.
Is the check result normal?
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The
trouble can be an intermittent malfunction (Refer to GROUP 00, How to Cope
with Intermittent Malfunction ).
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Repair
the wiring harness.
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STEP 12. Resistance measurement at A-29 A/C condenser fan motor
connector.
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(1)Disconnect the connector, and measure at the wiring
harness side.
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(2)Continuity between terminal 2 and body
earth.
OK: 2Ω or less
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Q.
Is the check result normal?
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Go to Step 14.
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Go to Step 13.
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STEP 13. Check the wiring harness between A-29 A/C condenser fan motor
connector terminal No.2 and earth.
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- Check the A/C condenser fan motor earth line for open or short
circuit.
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Q.
Is the check result normal?
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The
trouble can be an intermittent malfunction (Refer to GROUP 00, How to Cope
with Intermittent Malfunction ).
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Repair
or replace the wiring harness.
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STEP 14. Check the A/C condenser fan motor.
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Refer to .
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Q.
Does the rear window defogger work normally?
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Repair
the A/C-ECU.
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Repair
the A/C condenser fan motor.
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