|
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.
|