DTC Advanced Diagnostics: P0560 (3.0L Engine)
DTC P0560: Powertrain Control Module (PCM) Power Source Circuit Unexpected Voltage
General Description
The power of the powertrain control module (PCM) is supplied continuously from the +B_VBS/VBU terminal for maintaining the back-up RAM (includes during OFF (LOCK) mode). If the +B_VBS/VBU terminal voltage is lower than a specified voltage for a set time while PGM-FI main relay 1 is on, the PCM detects a malfunction and stores a DTC.
Monitor Execution, Sequence, Duration, DTC Type
| Execution | Continuous |
| Sequence | None |
| Duration | 0.5 second or more |
| DTC Type | One drive cycle, MIL on |
Enable Conditions
| Condition | |
|---|---|
| Vehicle | ON mode |
Malfunction Threshold
The +B_VBS/VBU terminal voltage is 2.1 V or less for at least 0.5 second while PGM-FI main relay 1 is on.
Possible Cause
- PCM +B_VBS/VBU line open
- PCM internal circuit failure
Diagnosis Details
Conditions for setting the DTC
When a malfunction is detected, the MIL comes on and a Pending DTC, a Confirmed DTC, the freeze data, and the on-board snapshot are stored in the PCM memory.
Conditions for clearing the DTC
The MIL is cleared if the malfunction does not return in three consecutive trips in which the diagnostic runs. The MIL, the Pending DTC, the Confirmed DTC, the freeze data, and the on-board snapshot can be cleared with the scan tool clear command.