Control Assembly: Testing and Inspection

AIR CONDITIONING: AIR CONDITIONING PANEL: INSPECTION

1. INSPECT HEATER CONTROL BASE

(a) Check the heater control base resistance.





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

Standard resistance:





If the result is not as specified, replace the heater control base.

(b) Check the A/C indicator operation.

(1) Connect the positive (+) lead from the battery to terminal 2 (L) and the negative (-) lead to terminal 3 (E).

(2) Push the air conditioning switch in and check that the indicator lights up.

OK:

Indicator lights up

If the result is not as specified, replace the heater control base.

(c) Check the illumination operation.

(1) Connect the positive (+) lead from the battery to terminal 5 (ILL+) and the negative (-) lead to terminal 6 (ILL-), then check that the bulb illuminates.

OK:

Bulb illuminates

If the result is not as specified, replace the bulb.

2. INSPECT HEATER CONTROL

(a) Check the heater control resistance.





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

Standard resistance:





If the result is not as specified, replace the heater control.

(b) Check the illumination operation.

(1) Connect the positive (+) lead from the battery to terminal 2 (ILL+) and the negative (-) lead to terminal 1 (ILL-), then check that the bulb illuminates.

OK:

Bulb illuminates

If the result is not as specified, replace the bulb.

3. INSPECT NO. 2 HEATER CONTROL KNOB

(a) Check the No. 2 heater control knob resistance.





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

Standard resistance:





If the result is not as specified, replace the No. 2 heater control knob.

(b) Check the rear window defogger indicator operation.

(1) Connect the positive (+) lead from the battery to terminal 3 (IG) and the negative (-) lead to terminal 1 (E).

(2) Push the rear window defogger switch in and check that the indicator lights up.

OK:

Indicator lights up

If the result is not as specified, replace the No. 2 heater control knob.

(c) Check the illumination operation.

(1) Connect the positive (+) lead from the battery to terminal 5 (ILL+) and the negative (-) lead to terminal 4 (ILL-), then check that the bulb illuminates.

OK:

Bulb illuminates

If the result is not as specified, replace the bulb.