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
| 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 Code |
DTC Detection Condition |
Trouble Area |
|---|---|---|
016 |
The difference in temperatures detected by the surface sensor and temperature control sensor is 30°C (86°F) or more. |
|
020 |
Operation stop of the glow plug is detected (open in the circuit). |
|
021 |
Overload on the glow plug or a short in the wire harness that is connected to the glow plug is detected. |
|
022 |
An error is detected in the output from the ECU to the glow plug, or a problem with the wire harness that is connected to the glow plug is detected. |
|
025 |
A short circuit is detected in the diagnostic communication line in the heater assembly. |
|
030 |
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 |
Operation stop of the air blower motor is detected (open in the circuit). |
|
032 |
A short circuit is detected in the wire harness which is connected to the air blower motor. |
Heater assembly (Harness or connector) |
034 |
An error is detected in the output from the ECU to the air blower motor, or a problem with the wire harness that is connected to the air blower motor is detected. |
|
060 |
Operation stop of the temperature control sensor is detected (open in the circuit). |
Heater assembly (temperature control sensor) |
061 |
A short is detected in the temperature control sensor circuit. |
|
064 |
Operation stop of the flame sensor is detected (open in the circuit). |
Heater assembly (flame sensor) |
065 |
A short is detected in the flame sensor circuit. |
|
071 |
Operation stop of the surface sensor is detected (open in the circuit). |
Heater assembly (surface sensor) |
072 |
A short is detected in the surface sensor circuit. |
|
074 |
The ECU stops operating due to overheating. |
Heater assembly (ECU) |
090 |
An internal malfunction of the control unit is detected. |
Heater assembly (ECU) |
091 |
Reset operation is repeated too many times. |
Heater assembly (ECU) |
092 |
A control unit (ROM) error is detected. |
Heater assembly (ECU) |
093 |
A control unit (RAM) error is detected. |
Heater assembly (ECU) |
094 |
A transistor malfunction due to frequent operation interruptions is detected. |
Heater assembly (ECU) |
095 |
A software stuck overflow is detected. |
Heater assembly (ECU) |
096 |
An operation lock due to the absence of a valid process is detected. |
Heater assembly (ECU) |
097 |
An internal control unit malfunction is detected. |
Heater assembly (ECU) |
098 |
A main relay malfunction is detected. |
Heater assembly (ECU) |
099 |
An EEPROM error is detected. |
Heater assembly (ECU) |
PROCEDURE
CHECK HEATER ASSEMBLY
Clear the DTCs stored in the memory using the DTC tester (Click here).
Check for DTCs (Click here).
OK
DTC is not output.