Control Assembly: Testing and Inspection

HEATING / AIR CONDITIONING: AIR CONDITIONING PANEL: INSPECTION

1. INSPECT NO. 1 HEATER CONTROL SUB-ASSEMBLY

(a) Check the resistance of the No. 1 heater control.

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





Text in Illustration





Standard Resistance:





If the result is not as specified, replace the No. 1 heater control.

(b) Check the recirc indicator operation.

(1) Connect the positive (+) lead from the battery to terminal 2 (A/C+) and the negative (-) lead to terminal 4 (REC).

(2) Push the fresh/recirc switch in and check that the indicator lights up.

OK:

Indicator lights up

If the result is not as specified, replace the No. 1 heater control.

(c) Check the illumination operation.

(1) Connect the positive (+) lead from the battery to terminal 7 (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 NO. 2 HEATER CONTROL SUB-ASSEMBLY

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

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





Text in Illustration





Standard Resistance:





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

(b) Check the rear defogger indicator operation.

(1) Connect the positive (+) lead from the battery to terminal 3 (IG+) and the negative (-) lead to terminal 5 (E).

(2) Push the rear 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.

(c) Check the illumination operation.

(1) Connect the positive (+) lead from the battery to terminal 7 (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. 3 HEATER CONTROL SUB-ASSEMBLY

(a) Check the resistance of the No. 3 heater control (air conditioning switch).

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





Text in Illustration





Standard Resistance:





If the result is not as specified, replace the No. 3 heater control.

(2) Measure the resistance according to the value(s) in the table below (for Cold Area Specification Vehicles).

Standard Resistance:





If the result is not as specified, replace the No. 3 heater control.

(b) Check the A/C indicator operation.

(1) Connect the positive (+) lead from the battery to terminal 2 (B) and the negative (-) lead to terminal 4 (AIND).

(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 No. 3 heater control.

(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.