Sienna AWD V6-3.5L (2GR-FE) (2007)
Heater Control Valve Relay: Testing and Inspection
Heater Relay (For Rear Air Conditioning System)
ON-VEHICLE INSPECTION
1. INSPECT REAR HEATER RELAY
a. Remove the rear heater relay.
b. Measure the resistance according to the value(s) in the table.
If the resistance is not as specified, replace heater relay.