NO.3 AIRFLOW MODE DOES NOT CHANGE.

id070300804400

3

Airflow mode does not change.

DESCRIPTION

•  Malfunction in heater unit airflow mode change system.

POSSIBLE CAUSE

•  Malfunction in heater unit’s airflow mode main link, airflow mode rod, airflow mode sub link, airflow mode wire or wire clamp (Steps 1, 2)

•  Bevel gear set (2) in climate control unit, airflow mode wire or wire clamp malfunction (Step 3)

•  Malfunction on one or more heater unit doors (Steps 4, 5)

Diagnostic procedure

STEP	INSPECTION		ACTION
1	INSPECT HEATER UNIT COMPONENTS CONDITION • Inspect heater unit’s airflow mode main link, airflow mode rod, airflow mode cranks, airflow mode sub link, airflow mode wire and wire clamps. ― Is there grease on airflow mode main link, airflow mode cranks and airflow mode sub links? ― Airflow mode main link, airflow mode rod, airflow mode cranks, airflow mode sub links installed securely and in the proper position? ― Is wire clamp free of deformation? • Are above items okay?	Yes	Go to the next step.
1		No	Apply grease or install airflow mode main link, airflow mode rod, airflow mode cranks and airflow mode sub links securely ins their proper positions, repair wire clamp, then go to Step 6.
2	INSPECT THAT ADJUSTMENT OF AIRFLOW MODE WIRE POSITION • Is airflow mode wire positioned securely and correctly in relation to the heater unit’s airflow mode main link?.	Yes	Go to the next step.
2		No	Adjust airflow mode wire or installed it correctly, then go to Step 6.
3	INSPECT CLIMATE CONTROL UNIT • Inspect climate control unit. ― Is bevel gear set properly engaged? ― Is airflow mode wire properly installed in correct direction in bevel gear? ― Is wire clamp free of deformation? • Are above items okay?	Yes	Go to the next step.
3		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 HEATER UNIT’S DOORS • Is there foreign materials or obstruction in any of heater unit’s doors?	Yes	Remove obstruction, then go to Step 6.
4		No	Go to the next step.
5	INSPECT THAT INSTALLATION POSITION OF ALL HEATER UNIT’S DOORS • Are all doors within heater unit securely and properly positioned?	Yes	Inspect each door for cracks or damage, then go to the next step.
5		No	Install malfunction doors securely in proper position, then go to the next step.
6	CONFIRM THAT MALFUNCTION SYMPTOMS DO NOT RECUR AFTER REPAIR • Does airflow change?	Yes	Troubleshooting completed. Explain repairs to customer.
6		No	Recheck malfunction symptoms, then repeat from Step 1 if malfunction recurs.

3	Airflow mode does not change.
DESCRIPTION	• Malfunction in heater unit airflow mode change system.
POSSIBLE CAUSE	• Malfunction in heater unit’s airflow mode main link, airflow mode rod, airflow mode sub link, airflow mode wire or wire clamp (Steps 1, 2) • Bevel gear set (2) in climate control unit, airflow mode wire or wire clamp malfunction (Step 3) • Malfunction on one or more heater unit doors (Steps 4, 5)