Operation CHARM: Car repair manuals for everyone.
Home >> Toyota >> 2007 >> Matrix L4-1.8L (1ZZ-FE) >> Repair and Diagnosis >> Heating and Air Conditioning >> Control Assembly >> Testing and Inspection >> Component Inspection
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Component Inspection

INSPECTION

1. INSPECT AIR CONDITIONING CONTROL ASSEMBLY







a. Inspect the blower switch.

1. Measure the resistance according to the value(s) in the table.

If the resistance is not as specified, replace the air conditioning control assembly.

b. Inspect illumination operation.

1. Connect the positive (+) lead from the battery to terminal 8 and the negative (-) lead to terminal 3, then check that the illuminations light up.

If the bulb does not light up, replace the bulb.







c. Inspect the defroster mode switch.

1. Measure the resistance according to the value(s) in the table.

If the resistance is not as specified, replace the air conditioning control assembly.







2. INSPECT COMBINATION SWITCH ASSEMBLY

a. Inspect the A/C switch.
1. Measure the resistance according to the value(s) in the table.

If the resistance is not as specified, replace the combination switch assembly.

b. Inspect indicator operation.
1. Connect the positive (+) lead from the battery to terminal 8 and the negative (-) lead to terminal 10 while the A/C switch is pressed, then check that the illuminations light up.

If operation is not as specified, replace the combination switch assembly.




c. Inspect the R/F switch.

1. Measure the resistance according to the value(s) in the table.

If the resistance is not as specified, replace the combination switch assembly.

d. Inspect indicator operation.

1. Connect the positive (+) lead from the battery to terminal 1 and the negative (-) lead to terminal 4, then check that the indicator lights up.

If operation is not as specified, replace the combination switch assembly.

e. Inspect illumination operation.
Connect the positive (+) lead from the battery to terminal 1 and the negative (-) lead to terminal 4, then check that the indicator lights up.

If the bulb does not light up, replace the bulb.
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