COMBUSTION TYPE POWER HEATER SYSTEM, Diagnostic DTC:016,020,021,022,025,030,031,032,034,060,061,064,065,071,072,074,090,091,092,093,094,095,096,097,098 and 099

016

Difference Evaluation 2

The difference in temperatures detected by the surface sensor and control overheating sensor is 30°C (86°F) or more.

020

Glow Plug Malfunction

Operation stop of the glow plug is detected. (Open in the circuit)

021

Glow Plug Output Overload

Overload on the glow plug or a short in the wire harness that is connected to the glow plug is detected.

022

Glow Plug Output Error

An error is detected in the signal output from the power heater ECU to the glow plug, or a problem with the wire harness that is connected to the glow plug is detected.

025

Short in K-line Circuit

A short circuit is detected in the diagnostic communication line in the heater assembly.

Heater assembly

030

Abnormal Combustion Air Blower Motor Speed

Air blower motor speed is out of the allowable range (8800 rpm to 10400 rpm). (An object may be caught in or between parts around the air blower motor.)

Heater assembly (air blower motor)

031

Combustion Air Blower Motor Malfunction

Operation stop of the air blower motor is detected. (Open in the circuit)

032

Short in Combustion Air Blower Motor Circuit

A short circuit is detected in the wire harness which is connected to the air blower motor.

Harness or connector

034

Combustion Air Blower Motor Output Error

An error is detected in the signal output from the power heater ECU to the air blower motor, or a problem with the wire harness that is connected to the air blower motor is detected.

060

Overheating Control Sensor Malfunction

Operation stop of the control overheating sensor is detected. (Open in the circuit)

Heater assembly (control overheating sensor)

061

Short in Overheating Control Sensor Circuit

A short is detected in the control overheating sensor circuit.

064

Flame Sensor Malfunction

Operation stop of the flame sensor is detected. (Open in the circuit)

Heater assembly (flame sensor)

065

Short in Flame Sensor Circuit

A short is detected in the flame sensor circuit.

071

Surface Sensor Malfunction

Operation stop of the surface sensor is detected. (Open in the circuit)

Heater assembly (surface sensor)

072

Short in Surface Sensor Circuit

A short is detected in the surface sensor circuit.

074

ECU Overheating

The heater assembly (ECU) stops operating due to overheating.

Heater assembly (ECU)

090

ECU Internal Malfunction / Reset Detection

An internal malfunction of the control unit is detected.

Heater assembly (ECU)

091

Repeated Resets Detection

Reset operation is repeated too many times.

Heater assembly (ECU)

092

ROM Error

A control unit (ROM) error is detected.

Heater assembly (ECU)

093

RAM Error

A control unit (RAM) error is detected.

Heater assembly (ECU)

094

Transistor Malfunction

A transistor malfunction due to frequent operation interruptions is detected.

Heater assembly (ECU)

095

Software Stuck Overflow

A software stuck overflow is detected.

Heater assembly (ECU)

096

Operation Locked Detection

An operation lock due to the absence of valid process is detected.

Heater assembly (ECU)

097

ECU Defects

An internal control unit malfunction is detected.

Heater assembly (ECU)

098

Main Relay Malfunction

A main relay malfunction is detected.

Heater assembly (ECU)

099

EEPROM Error

An EEPROM error is detected.

Heater assembly (ECU)