Inspection Procedure

1. Remove the heater control panel RH.
2. Disconnect the connector from heater control panel RH.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance 

   Fig 1: Identifying Heater Control Panel RH Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   STANDARD RESISTANCE SPECIFICATIONS
   
   

   Tester Connection	Condition	Specified Condition
   E21-13 (SWB) - E21-5 (SW2)	REC switch: ON	Below 1 Ω
   E21-13 (SWB) - E21-3 (SW0)	OFF switch: ON	Below 1 Ω
   E21-13 (SWB) - E21-4 (SW1)	P-TEMP UP switch: ON	Below 1 Ω
   E21-12 (SWA) - E21-5 (SW2)	A/C switch: ON	Below 1 Ω
   E21-12 (SWA) - E21-3 (SW0)	AUTO switch: ON	Below 1 Ω
   E21-12 (SWA) - E21-4 (SW1)	P-TEMP DW switch: ON	Below 1 Ω
   E21-13 (SWB) - E21-5 (SW2)	REC switch: OFF	10 kΩ or higher
   E21-13 (SWB) - E21-3 (SW0)	OFF switch: OFF	10 kΩ or higher
   E21-13 (SWB) - E21-4 (SW1)	P-TEMP UP switch: OFF	10 kΩ or higher
   E21-12 (SWA) - E21-5 (SW2)	A/C switch: OFF	10 kΩ or higher
   E21-12 (SWA) - E21-3 (SW0)	AUTO switch: OFF	10 kΩ or higher
   E21-12 (SWA) - E21-4 (SW1)	P-TEMP DW switch: OFF	10 kΩ or higher

NG: REPLACE HEATER CONTROL PANEL RH 

OK: Go to Next Step 

1. Disconnect the connector from heater control panel LH.
   Fig 2: Identifying Heater Control Panel LH Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.
   Fig 3: Identifying Heater Control Panel RH Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance 

   STANDARD RESISTANCE SPECIFICATIONS
   
   

   Tester Connection	Condition	Specified Condition
   E6-16 (SWA) - E21-12 (SWA)	Always	Below 1 Ω
   E6-4 (SW0) - E21-3 (SW0)	Always	Below 1 Ω
   E6-5 (SW1) - E21-4 (SW1)	Always	Below 1 Ω
   E6-6 (SW2) - E21-5 (SW2)	Always	Below 1 Ω
   E6-17 (SWB) - E21-13 (SWB)	Always	Below 1 Ω
   E6-16 (SWA) - Body ground	Always	10 kΩ or higher
   E6-4 (SW0) - Body ground	Always	10 kΩ or higher
   E6-5 (SW1) - Body ground	Always	10 kΩ or higher
   E6-6 (SW2) - Body ground	Always	10 kΩ or higher
   E6-17 (SWB) - Body ground	Always	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK : PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE