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, 099

DTC Code DTC Name
016 Difference Evaluation 2
020 Glow Plug Malfunction
021 Glow Plug Output Overload
022 Glow Plug Output Error
025 Short in K-line Circuit
030 Abnormal Combustion Air Blower Motor Speed
031 Combustion Air Blower Motor Malfunction
032 Short in Combustion Air Blower Motor Circuit
034 Combustion Air Blower Motor Output Error
060 Overheating Control Sensor Malfunction
061 Short in Overheating Control Sensor Circuit
064 Flame Sensor Malfunction
065 Short in Flame Sensor Circuit
071 Surface Sensor Malfunction
072 Short in Surface Sensor Circuit
074 ECU Overheating
090 ECU Internal Malfunction / Reset Detection
091 Repeated Resets Detection
092 ROM Error
093 RAM Error
094 Transistor Malfunction
095 Software Stuck Overflow
096 Operation Locked Detection
097 ECU Defects
098 Main Relay Malfunction
099 EEPROM Error

DESCRIPTION

DTC No. Detection Item DTC Detection Condition Trouble Area
016 Difference Evaluation 2 The difference in temperatures detected by the surface sensor and control overheating sensor is 30°C (86°F) or more.

  • Heater assembly (surface sensor)

  • Heater assembly (control overheating sensor)
020 Glow Plug Malfunction Operation stop of the glow plug is detected. (Open in the circuit)

  • Heater assembly (glow plug)

  • Harness or connector
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.

  • Heater assembly (glow plug)

  • Harness or connector
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.

  • Heater assembly (ECU)

  • Harness or connector
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)

  • Heater assembly (air blower motor)

  • Harness or connector
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.

  • Heater assembly (ECU)

  • Harness or connector
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.

  • Heater assembly (control overheating sensor)

  • Harness or connector
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.

  • Heater assembly (flame sensor)

  • Harness or connector
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.

  • Heater assembly (surface sensor)

  • Harness or connector
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)

PROCEDURE


  1. REPLACE HEATER ASSEMBLY


    1. Replace the heater assembly.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    END