Air Conditioning Panel: Inspection

1. Disconnect the connector from the No. 1 heater control (air inlet control switch).
2. Measure the resistance according to the value(s) in the table below.
   Fig 1: Identifying Terminals Of No. 1 Heater Control (Air Inlet Control Switch) Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection (Symbols)	Switch Condition	Specified Condition
   3 (FRS) - 4 (REC)	Air inlet control switch: FREE	Below 1 Ω
   3 (FRS) - 4 (REC)	Air inlet control switch: LOCK	10 kΩ or higher
   1 (F/D) - 8 (ACID)	Mode control dial: except Foot/DEF position and DEF position	10 kΩ or higher
   1 (F/D) - 8 (ACID)	Mode control dial: Foot/ DEF position or DEF position	Below 1 Ω

3. Check that the indicator light comes on.
   1. Turn the No. 1 heater control (air inlet control switch) to LOCK.
   2. Connect a positive (+) lead from the battery to terminal 2 and a negative (-) lead from the battery to terminal 4, and check that the indicator light comes on.

   OK: 

   The indicator light comes on  .

4. Check that the illumination comes on.
   1. Connect a positive (+) lead from the battery to terminal 7 and negative (-) to terminal 6, and check that the illumination comes on.

   OK: 

   The illumination comes on  .

   If the result is not as specified, replace the No. 1 heater control (air inlet control switch).

1. Disconnect the connector from the No. 2 heater control (blower switch).
2. Measure the resistance according to the value(s) in the table below.

Fig 2: Identifying Terminals Of No. 2 Heater Control (Blower Switch) Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard resistance 

If the resistance is not as specified, replace the No. 2 heater control (blower switch).

1. Disconnect the connector from the No. 3 heater control.
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection (Symbols)	Switch Condition	Specified Condition
   2 (B) - 3 (A/C)	A/C switch: LOCK	Below 1 Ω
   2 (B) - 3 (A/C)	A/C switch: FREE	10 kΩ or higher
   7 (B) - 8 (E)*1	Air mix control dial: MAX HOT position	Below 1 Ω
   7 (B) - 8 (E)*1	Air mix control dial: except MAX HOT position	10 kΩ or higher
   HINT: *1: w/ PTC heater

   Fig 3: Identifying Terminals Of No. 3 Heater Control Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Check that the indicator light comes on.
   1. Connect a positive (+) lead from the battery to terminal 3 and a negative (-) lead from the battery to terminal 4, and check that the indicator light comes on.

   OK: 

   The indicator light comes on  .

4. Check that the illumination comes on.
   1. Connect a positive (+) lead from the battery to terminal 5 and a negative (-) lead from the battery to terminal 6, and check that the illumination comes on.

   OK: 

   The illumination comes on  .

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