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NO.3 AIRFLOW MODE FROM FRONT VENTS DOES NOT CHANGE

BME070301038205

3 | Airflow mode from front vents does not change.
DESCRIPTION | • Malfunction in front A/C unit's airflow system.
POSSIBLE CAUSE | • Malfunction in front A/C unit's airflow mode link, crank, wire, or wire clamp • Bevel gear set (2) in front climate control unit, airflow mode wire or wire clamp malfunction • Malfunction in one or more front A/C unit doors

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | INSPECT FRONT A/C UNIT'S AIRFLOW MODE SYSTEM • Inspect front A/C unit's airflow mode link, crank, wire, and wire clamp as follows.

  - Is there grease on link and crank?
  - Are link and crank installed securely in their proper positions?
  - Is wire clamp free of deformation?

• Are above items all okay?
Yes
Go to next step.
No | Apply grease or install link and crank securely in their proper positions. Repair or replace wire clamp, then go to Step 6.
2 | VERIFY THAT AIRFLOW MODE WIRE FROM A/C UNIT IS POSITIONED SECURELY AND CORRECTLY • Is airflow mode wire positioned securely and correctly in relation to the front A/C unit's airflow mode lever? | Yes | Go to next step.
No | Adjust wire or install it correctly, then go to Step 6.
3 | INSPECT FRONT CLIMATE CONTROL UNIT • Inspect front climate control unit as follows.

  - Is bevel gear set properly engaged?
  - Is airflow mode wire properly installed in correct direction on bevel gear?
  - Is wire clamp free of deformation?

• Are above items okay?
Yes
Go to next step.
No | Properly engage bevel gear set or install airflow mode wire in correct direction, repair or replace wire clamp, then go to Step 6.
4 | INSPECT FRONT A/C UNIT'S AIRFLOW MODE DOORS • Is there any foreign material or obstructions in any of front A/C unit's doors? | Yes | Remove obstruction, then go to Step 6.
No | Go to next step.
5 | VERIFY THAT ALL AIRFLOW MODE DOORS WITHIN FRONT A/C UNIT ARE POSITIONED SECURELY AND PROPERLY • Are all doors within front A/C unit securely and properly positioned? | Yes | Check each door for cracks or damage, then go to next step.
No | Install malfunction doors securely in proper position, then go to next step.
6 | VERIFY THAT MALFUNCTION SYMPTOM OCCURS AFTER REPAIR • Does airflow mode change? | Yes | Troubleshooting completed. Explain repairs to customer.
No | Recheck malfunction symptoms, then repeat from Step 1 if malfunction recurs.