Toyota Sienna Service Manual: 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 resistance is not as specified, replace the rear heater relay.
Heater relay
ON-VEHICLE INSPECTION
1. INSPECT HEATER RELAY
(a) Remove the heater relay.
(b) Measure the resistance according to the value(s) in
the table below.
Standard resistance
If the resistance i ...
Air conditioning control assembly
COMPONENTS
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Other materials:
High Temperature
DTC 58-45 High Temperature
DTC 80-45 High Temperature
DESCRIPTION
DTC No.
DTC Detection Condition
Trouble Area
58-45
High map disc player temperature is detected (Over
80C).
Radio and navigation assembly
80-45
High map disc player tem ...
Open in Rear Curtain Shield Squib RH Circuit
DTC B1631/84 Open in Rear Curtain Shield Squib RH Circuit
DESCRIPTION
The rear curtain shield squib RH circuit consists of the center airbag sensor
assembly and the curtain
shield airbag assembly RH.
The circuit instructs the SRS to deploy when deployment conditions are met.
DTC B1631/84 ...
Vehicle Speed Signal Error (Test Mode DTC)
DTC C2191/91 Vehicle Speed Signal Error (Test Mode DTC)
DESCRIPTION
The tire pressure warning ECU receives a speed signal from the combination
meter. This DTC is stored
upon entering test mode, and cleared when a vehicle speed signal of 12 mph (20
km/h) is detected for 3
seconds or more. Thi ...
