Air Conditioning Switch: Testing and Inspection

AIR CONDITIONER CONTROL ASSEMBLY

Resistance:

a. Inspect blower switch.
(1) Measure the resistance according to the value(s) in the table.
If the resistance is not as specified, replace the air conditioner 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.

Resistance:

c. Inspect 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 conditioner control assembly.

COMBINATION SWITCH ASSEMBLY

Resistance:

a. Inspect 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.

Resistance:

c. Inspect 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.
(1) Connect the positive (+) lead from the battery to terminal 7 and the negative (-) lead to terminal 5, then check that the illuminations light up. If the bulb does not light up, replace the bulb.


DEFROSTER MODE SWITCH

Standard Voltage:

a. Disconnect the connector from the defroster mode switch and inspect the wire harness side, as shown in the chart.

If the circuit is as specified, try to replace the defroster mode switch with a one. If the circuit is not as specified, inspect the circuits connected to other parts.

Standard Voltage:

b. Connect the connector to the defroster mode switch and inspect the wire harness side connector from the back side, as shown in the chart.