Toyota CH-R Service Manual: Diagnostic Trouble Code Chart

Toyota CH-R Service Manual / Heating / Air Conditioning / Air Conditioning System(for Automatic Air Conditioning System With Side-mounted Air Conditioner Pressure Sensor) / Diagnostic Trouble Code Chart

DIAGNOSTIC TROUBLE CODE CHART

AIR CONDITIONING SYSTEM

DTC No.	Detection Item	DTC Detection Condition
B1411	Room Temperature Sensor Circuit	Any of the following conditions is met: Open in cooler thermistor (room temperature sensor) circuit Short in cooler thermistor (room temperature sensor) circuit
B1412	Ambient Temperature Sensor Circuit	When the air conditioning amplifier assembly cannot receive outside temperature sensor data from the combination meter assembly.
B1413	Evaporator Temperature Sensor Circuit	Any of the following conditions is met: Open in No. 1 cooler thermistor (evaporator temperature sensor) circuit Short in No. 1 cooler thermistor (evaporator temperature sensor) circuit
B1423	Pressure Sensor Circuit	Open in air conditioner pressure sensor circuit Short in air conditioner pressure sensor circuit Refrigerant pressure on high pressure side is extremely low (195 kPa (2.0 kgf/cm2, 28 psi) or less) or extremely high (2812 kPa (28.7 kgf/cm2, 408 psi) or more)
B1441	Air Mix Damper Control Servo Motor Circuit (Passenger Side)	Air mix damper position sensor value does not change even if air conditioning amplifier assembly operates No. 1 air conditioning radiator damper servo sub-assembly
B1442	Air Inlet Damper Control Servo Motor Circuit	Air inlet damper position sensor value does not change even if air conditioning amplifier assembly operates No. 1 blower damper servo sub-assembly
B1443	Air Outlet Damper Control Servo Motor Circuit	Air outlet damper position sensor value does not change even if air conditioning amplifier assembly operates No. 1 air conditioning radiator damper servo sub-assembly
B1446	Air Mix Damper Control Servo Motor Circuit (Driver Side)	Air mix damper position sensor value does not change even if air conditioning amplifier assembly operates No. 1 air conditioning radiator damper servo sub-assembly
B1451	Compressor Solenoid Circuit	Any of the following conditions is met: Open in compressor solenoid circuit Short in compressor solenoid circuit
B1497	Communication Malfunction (Bus Ic)	Any of the following conditions is met: Error in communication line Open in communication line
B14B2	Lost Communication with Front Panel LIN	Lost communication with air conditioning control assembly
B14B8	Refrigerant Shortage	When following condition is detected in refrigerant shortage check in normal operation: Amount of refrigerant is insufficient
U0100	Lost Communication with ECM	No communication with ECM
U0131	Lost Communication with Electric Power Steering ECU	No communication with power steering ECU assembly
U0142	Lost Communication with Main Body ECU	No communication with main body ECU (multiplex network body ECU)
U0155	Lost Communication with Combination Meter	No communication with combination meter assembly

Data List / Active Test

DATA LIST / ACTIVE TEST DATA LIST NOTICE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when decidi ...

Refrigerant Shortage (B14B8)

DESCRIPTION This DTC is stored if the amount of refrigerant in the air conditioning system is insufficient. The air conditioning amplifier assembly receives the ambient temperature signal, refri ...

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