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STEP
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INSPECTION
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ACTION
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1
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INSPECT REAR A/C UNIT'S REAR AIRFLOW MODE AND AIR MIX ACTUATOR
• Remove rear A/C unit's rear airflow mode and air mix actuator.
• Inspect rear A/C unit's airflow mode lever and crank.
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- Is there grease on lever and crank?
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- Are lever and crank securely in their proper positions?
• Are above items all okay?
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Yes
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Go to next step.
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No
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Apply grease or install lever and crank securely in their proper positions, then go to Step 9.
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2
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VERIFY WHETHER MALFUNCTION IS IN REAR AIRFLOW MODE AND AIR MIX ACTUATOR SYSTEM OR REAR A/C UNIT'S AIRFLOW MODE DOOR
• Turn ignition switch to ON position.
• Set rear main fan switch at third position.
• Is each rear airflow mode and air mix (VENT and COLD, 1/2 HOT, HEATand HOT) accessed smoothly when airflow mode crank is operated by hand?
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Yes
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Go to next step.
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No
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Go to next Step 7.
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*3
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INSPECT WIRING HARNESS BETWEEN FUSE BLOCK AND REAR AIRFLOW MODE AND AIR MIX ACTUATOR FOR CONTINUITY
• Test voltage at rear airflow mode and air mix actuator terminal F (motor drive).
• Is voltage approximately B+?
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Yes
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Go to next step.
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No
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Repair wiring harness between fuse block and rear airflow mode and air mix actuator, then go to Step 9.
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4
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INSPECT REAR AIRFLOW MODE AND AIR MIX ACTUATOR
• Inspect rear airflow mode and air mix actuator.
• Is it okay?
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Yes
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Go to next step.
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No
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Replace rear airflow mode and air mix actuator, then go to Step 9.
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*5
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INSPECT WIRING HARNESS BETWEEN REAR CLIMATE CONTROL UNIT AND REAR AIRFLOW MODE AND AIR MIX ACTUATOR FOR CONTINUITY
• Turn ignition switch to LOCK position.
• Disconnect rear climate control unit connector and rear airflow mode and air mix actuator connector.
• Inspect for continuity between the following terminals.
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- Terminal F (GND signal)-Terminal G (rear airflow mode and air mix actuator)
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- Terminal A (rear climate control unit)-Terminal A (rear airflow mode and air mix actuator)
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- Terminal B (rear climate control unit)-Terminal B (rear airflow mode and air mix actuator)
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- Terminal D (rear climate control unit)-Terminal C (rear airflow mode and air mix actuator)
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- Terminal O (IG2 signal)-Terminal F (rear airflow mode and air mix actuator)
• Is there continuity?
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Yes
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Go to next step.
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No
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Repair wiring harness between rear climate control unit and rear airflow mode and air mix actuator, then go to Step 9.
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*6
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INSPECT WIRING HARNESS BETWEEN REAR CLIMATE CONTROL UNIT AND REAR AIRFLOW MODE AND AIR MIX ACTUATOR FOR SHORT TO GROUND
• Inspect for no continuity between the following terminals and ground.
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- Terminal F (GND signal)-Terminal G (rear airflow mode and air mix actuator)
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- Terminal A (rear climate control unit)-Terminal A (rear airflow mode and air mix actuator)
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- Terminal B (rear climate control unit)-Terminal B (rear airflow mode and air mix actuator)
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- Terminal D (rear climate control unit)-Terminal C (rear airflow mode and air mix actuator)
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- Terminal O (IG2 signal)-Terminal F (rear airflow mode and air mix actuator)
• Is there no continuity?
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Yes
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Go to next step.
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No
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Repair wiring harness between rear climate control unit and rear airflow mode and air mix actuator, go to Step 9.
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7
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INSPECT REAR A/C UNIT
• Is there any foreign material or obstructions in rear A/C unit's airflow mode door?
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Yes
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Remove obstruction, then go to Step 9.
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No
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Go to next step.
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8
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INSPECT REAR A/C UNIT'S AIRFLOW MODE DOOR
• Inspect rear A/C unit's airflow mode door as follows.
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- Is airflow mode door free of cracks and damage?
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- Is airflow mode door securely and properly installed?
• Are above items okay?
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Yes
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Replace rear climate control unit, then go to next step.
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No
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Replace airflow mode door or install airflow mode door securely in proper position, then go to next step.
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9
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VERIFY THAT MALFUNCTION SYMPTOM OCCURS AFTER REPAIR
• Does airflow mode change?
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Yes
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Troubleshooting completed. Explain repairs to customer.
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No
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Recheck malfunction symptoms, then repeat from Step 1 if malfunction recurs.
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