DTC P0C7D (370)
DTC P0C7D (370): HV Battery Temperature Sensor 7A Circuit Range/Performance
General Description
The temperatures between the battery modules are kept approximately equal if the battery module heater, the battery module temperature sensors, the battery pack, and the inverter, etc. are operating normal. The battery module temperature sensors are compared to detect characteristic abnormality of themselves. If the temperature difference between battery module temperature sensor 7(A) and the average of other battery module temperature sensors are a specified value, the battery condition monitor module A detects a malfunction and stores a DTC.
Monitor Execution, Sequence, Duration, DTC Type
| Execution | Continuous |
| Sequence | None |
| Duration | - |
| DTC Type | One drive cycle, MIL on, POWER SYSTEM indicator on, 12 volt battery charging system indicator off |
Enable Conditions
| Condition | Minimum | Maximum |
|---|---|---|
| Elapsed time after the vehicle condition is turned to the READY TO DRIVE mode** | 10 minutes | - |
| Temperature variability between the battery module temperature (battery module temperature sensor 1(A), 2(A), 3(A), 4(A), 5(A), 6(A))* | - | 28 deg.F (16 deg.C) |
| Temperature variability between the battery module temperature (battery module temperature sensor 1(A), 2(A), 3(A), 4(A), 5(A), 6(A))** | 30 deg.F (17 deg.C) | - |
| Vehicle condition | Vehicle ON mode, or Plug-in charge on, or Plug-in quick charge on | |
| Other | Battery module heater must be operating normal | |
*: Condition 1
**: Condition 2
Malfunction Threshold
- Condition 1
The temperature difference between battery module temperature sensor 7(A) and the average of the other battery module temperature sensors is 51 deg.F (28 deg.C) or more.
- Condition 2
The temperature difference between battery module temperature sensor 7(A) and the average of the other battery module temperature sensors is 51 deg.F (28 deg.C) or more.
Possible Cause
- Battery module heater line open
- Battery pack internal circuit failure
Diagnosis Details
Conditions for setting the DTC
When a malfunction is detected, the MIL and the POWER SYSTEM indicator comes on and a Pending DTC, a Confirmed DTC, and the freeze data are stored in the battery condition monitor module A memory.
Conditions for clearing the DTC
The MIL and the POWER SYSTEM indicator are cleared if the malfunction does not return in three consecutive trips in which the diagnostic runs. The MIL and the POWER SYSTEM indicator, the Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command.