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NO.2 AMOUNT OF AIR BLOWING FROM FRONT VENTS DOES NOT CHANGE

BME070300000W04

2 | Amount of air blowing from front vents does not change.
DESCRIPTION | • Malfunction in front blower system.
POSSIBLE CAUSE | • Malfunction in front blower relay, front blower motor, front resistor, front fan switch, or related wiring harnesses • Blower unit malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | INSPECT FRONT BLOWER SYSTEM • Inspect the following systems and electrical parts.

  - Front blower relay
  - Front blower motor
  - Front resistor
  - Front fan switch
  - Related wiring harnesses

• Are they okay?
Yes
Go to next step.
No | Repair or replace malfunctioning part, then go to Step 5.
2 | VERIFY WHETHER MALFUNCTION IS IN BLOWER UNIT OR ELSEWHERE • Turn ignition switch to ON position. • Turn fan switch on. • Is noise coming from blower unit? | Yes | Go to next step.
No | Go to Step 4.
3 | INSPECT BLOWER UNIT • Inspect fan in blower unit as follows.

  - Is fan free of interference from blower unit case?
  - Is fan free of foreign material and obstructions?

• Is fan okay?
Yes
Go to next step.
No | Remove obstruction, repair or replace fan and blower unit case, then go to Step 5.
4 | INSPECT BLOWER UNIT INTAKE VENT • Is blower unit intake vent clogged? | Yes | Remove obstruction, then go to next step.
No | Check if there are any obstructions in passage between blower unit and front A/C unit, then go to next step.
5 | VERIFY THAT MALFUNCTION SYMPTOM OCCURS AFTER REPAIR • Does air blow out? | Yes | Troubleshooting completed. Explain repairs to customer.
No | Recheck malfunction symptoms, then repeat from Step 1 if malfunction recurs.