SYSTEM DESCRIPTION
FRONT SEAT HEATER
(a) By operating the seat heater switch, the temperature can be controlled within a range of 35 to 42°C (95 to 108°F).
(b) The seat heater switch indicator lights indicate the seat heater operating status.
(c) The seat heaters of both seats are controlled by the seat heater control sub-assemblies.
How To Proceed With Troubleshooting
Operation CheckToyota CH-R Service Manual > Navigation System: Steering Pad Switch Circuit
DESCRIPTION
This circuit sends an operation signal from the steering pad switch assembly
to the radio and display receiver assembly.
If there is an open in the circuit, the audio system cannot be operated using
the steering pad switch assembly.
If there is a short in the circuit, the same con ...
Toyota CH-R Service Manual > Can Communication System: Check Bus 2 Lines for Short Circuit
DESCRIPTION
There may be a short circuit between the CAN main bus lines and/or CAN branch
lines when the resistance between terminals 18 (CA4H) and 17 (CA4L) of the central
gateway ECU (network gateway ECU) is below 54 Ω.
Symptom
Trouble Area
Resistance ...