Operation CHARM: Car repair manuals for everyone.
Home >> Toyota >> 2012 >> Yaris Sedan L4-1.5L (1NZ-FE) >> Repair and Diagnosis >> Heating and Air Conditioning >> Control Assembly >> Testing and Inspection
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Control Assembly: Testing and Inspection





HEATING / AIR CONDITIONING: AIR CONDITIONING PANEL (for Sedan): INSPECTION

1. INSPECT HEATER CONTROL BASE SUB-ASSEMBLY





(a) Check the heater control base resistance.

(1) Using an ohmmeter, measure the resistance and check the results in accordance with the values 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 (E).

(2) Push the A/C switch in and check that the indicator lights up.

Standard:

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.

Standard:

Bulb illuminates

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

2. INSPECT HEATER CONTROL SUB-ASSEMBLY





(a) Check the heater control resistance.

(1) Using an ohmmeter, measure the resistance and check the results in accordance with the values 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.

Standard:

Bulb illuminates

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

3. INSPECT NO. 3 HEATER CONTROL KNOB





(a) Check the No. 3 heater control knob resistance.

(1) Using an ohmmeter, measure the resistance and check the results in accordance with the values in the table below.

Standard resistance:





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

(b) Check the Rr. DEF 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 Rr. DEF switch in and check that the indicator lights up.

Standard:

Indicator lights up

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

Standard:

Bulb illuminates

If the result is not as specified, replace the bulb.
pro multis · About Operation CHARM