Mazda MX-6 1998, Workshop Manual

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TROUBLESHOOTING
STEP INSPECTION ACTION
4 Is intake vent of blower unit clogged?
Yes Remove obstruction, then go to next step.
No Check if there are any obstructions in passage from
blower unit to heater unit, then go to next step.
5 Is air discharged?
Yes Troubleshooting completed. Explain repairs to customer.
No Reconfirm malfunction symptoms, then repeat from step 1
if malfunction reoccurs.
7 A ir does not blow out on specific airflow mode.
TROUBLESHOOTING HINTS
Malfunction in VENT mode circuit
• Steps 2— 5
Malfunction in HEAT mode circuit
• Step 6
Malfunction in DEFROSTER mode circuit
• Steps 7— 9
STEP
INSPECTION ACTION
1 Does airflow mode change when airflow mode
Yes Go to next step.
switch is operated?
No Go to troubleshooting symptom No. 9.
2 Is air discharged when in VENT mode?
Yes Go to step 6.
No Go to next step.
3 Are center and side vent dials at closed
Yes Turn dial to open position, then go to step 10.
position?
No Go to next step.
4 Is vent clogged?
Yes Remove obstruction, then go to step 10.
No Go to next step.
5 Is duct in dashboard properly installed and in
good condition?
Yes Check duct for clogging, deformity, and air leakage, then
go to step 10.
No Securely and properly install duct, then go to step 10.
6 Is air discharged when in HEAT mode? Yes
Go to next step.
No Check vent for clogging, then go to step 10.
7 Is air discharged when in DEFROSTER
Yes Operation is okay. Reconfirm malfunction symptoms.
mode?
No
Go to next step.
8 Is vent clogged?
Yes Remove obstruction, then go to step 10.
No
Go to next step.
9
Is defroster duct properly installed and in good
condition?
Yes
Check duct for clogging, deformity, and air leakage, then
go to next step.
No Securely and properly install duct, then go to next step.
10 Is air discharged from vent?
Yes
Troubleshooting completed. Explain repairs to customer.
No Reconfirm malfunction symptoms, then repeat from step 1
if malfunction reoccurs.
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