Toyota Sienna Service Manual: Heater relay

Magnetic clutch relay

ON-VEHICLE INSPECTION 1. INSPECT MAGNETIC CLUTCH RELAY (a) Remove the magnetic clutch relay. (b) Measure the resistance according to the value(s) in the table below. Standard resistance I ...

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 below. Standard resistance If the re ...

Other materials:

Meter Illumination is Always Dark
DESCRIPTION  Confirm that the vehicle is equipped with the optitron meter, then check this circuit. The combination meter assembly receives a auto dimmer signal from the body ECU by the multiplex communication line. WIRING DIAGRAM INSPECTION PROCEDURE 1 CHECK MULTIPLEX CO ...

A/F Sensor Circuit Slow Response
HINT: DTC P2A00 indicates malfunctions related to the bank 1 A/F sensor. DTC P2A03 indicates malfunctions related to the bank 2 A/F sensor. Bank 1 refers to the bank that includes cylinder No. 1. Bank 2 refers to the bank that includes cylinder No. 2. Sensor 1 refers to the sensor mo ...

Driving Position Memory Switch Circuit (w/ Memory)
DESCRIPTION The seat memory switch sends signals to the outer mirror control ECU LH via the multiplex communication system to memorize a given seat position. This memory system does not use a position sensor. The seat position is detected by counting pulses that are output when the motor tu ...