1. DTC P0380 description
The ECM controls the glow relay that supplies power to the glow plug based on the engine coolant temperature. During the after glow period, the glow plug works for a predetermined period of time. If the ECM detects an open circuit or a short circuit in the relay control circuit, the DTC is set.
2. Condition for setting DTC P0380
Condition for running the DTC
- The battery voltage is 9 to 16 V.
- The ignition switch is ON.
- DTC P1606 is not set.
Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 without DPD) DTC P1606 ECM Internal IC Failure".
Condition for setting the DTC
Any of the following are met:
- The ECM detects that there is an open circuit or short to ground in the glow relay control circuit for 3 seconds or more when the relay is commanded OFF.
- The ECM detects that there is a short to the battery power supply circuit or a short to the ignition power supply circuit in the glow relay control circuit for 3 seconds or more when the relay is commanded ON.
3. Action taken when DTC P0380 sets
- Euro4: The ECM illuminates the SVS indicator light. Refer to Action taken when DTC sets - Type C (Euro4).
- Except Euro4: The ECM illuminates the check engine warning light. Refer to Action taken when DTC sets - Type A (Except Euro4).
Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 without DPD) DTC type definitions".
4. Condition for clearing DTC P0380
- Euro4: Refer to Condition for clearing the SVS indicator light/DTC - Type C (Euro4).
- Except Euro4: Refer to Condition for clearing the check engine warning light/DTC - Type A or Type B (Except Euro4).
Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 without DPD) DTC type definitions".