DTC Advanced Diagnostics: P06B1 (356) (Generator Motor Control Module)
DTC P06B1 (356): Generator Motor Phase Current Sensor Power Supply Circuit Low (Phase U)
General Description
The motor control module applies power supply voltage (5 V) to the generator phase U current sensor and monitors the voltage. When the power supply voltage is a specified voltage for a set time, a malfunction is detected and a DTC is stored.
Monitor Execution, Sequence, Duration, DTC Type
| Execution | Continuous |
| Sequence | None |
| Duration | 500 milliseconds or more |
| DTC Type | Two drive cycles, MIL on, POWER SYSTEM indicator on, 12 volt battery charging system indicator off |
Enable Conditions
| Condition | Minimum | Maximum |
|---|---|---|
| 12 volt battery voltage | 6.5 V | - |
Malfunction Threshold
The generator phase U current sensor power supply voltage is 2.5 V or less for at least 500 milliseconds.
Possible Cause
NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
- Generator phase U current sensor power supply line short to ground
- Generator phase U current sensor failure
- Motor control module failure
Diagnosis Details
Conditions for setting the DTC
When a malfunction is detected during the first drive cycle, a Pending DTC is stored in the motor control module memory. If the malfunction returns in the next (second) drive cycle, the MIL and the POWER SYSTEM indicator comes on and a Confirmed DTC and the freeze data are stored.
Conditions for clearing the DTC
The MIL and the POWER SYSTEM indicator is cleared if the malfunction does not return in three consecutive trips in which the diagnostic runs. The MIL, the POWER SYSTEM indicator, the Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command or by disconnecting the 12 volt battery.