COMBUSTION TYPE POWER HEATER SYSTEM, Diagnostic DTC:012,014 and 017
| DTC Code | DTC Name |
|---|---|
| 012 | Overheating |
| 014 | Difference Evaluation Overheating |
| 017 | Hardware Overheating |
DESCRIPTION
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
|---|---|---|---|
012 |
Overheating |
The surface sensor or control overheating sensor detects a temperature of 125°C (257°F) or higher. |
|
014 |
Difference Evaluation Overheating |
When the engine coolant temperature is 80°C (176°F) and the heater assembly is operating, the difference in temperatures detected by the surface sensor and control overheating sensor is 25°C (77°F) or higher. |
|
017 |
Hardware Overheating |
When neither DTC 012 nor 014 is detected, the control overheating sensor or surface sensor detects a temperature of 130°C (266°F). |
|
PROCEDURE
CHECK FOR ENGINE COOLANT LEAKS
Check for engine coolant leaks.
for 1AD-FTV:
for 2AD-FHV:
for 2AD-CCo, 2AD-DPF:
Result
Proceed to
OK
NG
NG REPAIR ENGINE COOLANT LEAKS
CHECK ENGINE COOLANT QUALITY
Check the engine coolant quality.
for 1AD-FTV:
for 2AD-FHV:
for 2AD-CCo, 2AD-DPF:
Result
Proceed to
OK
NG
NG REPLACE ENGINE COOLANT
INSPECT THERMOSTAT
Remove the thermostat.
for 1AD-FTV:
for 2AD-FHV:
for 2AD-CCo, 2AD-DPF:
Inspect the thermostat.
for 1AD-FTV
for 2AD-FHV:
for 2AD-CCo, 2AD-DPF:
Result
Proceed to
OK
NG
NG REPLACE THERMOSTAT
INSPECT WATER PUMP ASSEMBLY
Remove the water pump assembly.
for 1AD-FTV: Click here
for 2AD-FHV: Click here
for 2AD-CCo, 2AD-DPF:
Inspect the water pump assembly.
for 1AD-FTV:
for 2AD-FHV:
for 2AD-CCo, 2AD-DPF:
Result
Proceed to
OK
NG
NG REPLACE WATER PUMP ASSEMBLY