The PCM monitors system voltage on the PCM ignition feed circuit. If the system voltage is out of tolerance, DTC P0560 will be set. When the conditions that set DTC P0560 are present, operation of some vehicle systems and components may be affected.
• | The engine is running. |
• | System voltage monitored at the PCM ignition feed circuit is less than 9 volts or greater than 16 volts. |
• | Above conditions for longer than 25 seconds. |
• | The PCM will not illuminate the malfunction indicator lamp (MIL). |
• | The PCM will store conditions which were present when the DTC set as Failure Records data only. This information will not be stored as Freeze Frame data. |
• | A History DTC will clear after 40 consecutive warm-up cycles have occurred without a malfunction. |
• | The DTC can be cleared by using the scan tool Clear Info function. |
Check for the following conditions:
Poor connection or damaged harness. Inspect the wiring harness for damage. If the harness appears to be OK, observe the Ignition 1 voltage display on the scan tool while moving connectors and wiring related to the PCM, dash harness, and engine harness. A change in the display will indicate the location of the fault.
If DTC P0560 cannot be duplicated, reviewing the Fail Records vehicle mileage since the diagnostic test last failed may help determine how often the condition that caused the DTC to be set occurs. This may assist in diagnosing the condition.
Important: Charging with a battery charger while starting the engine can cause DTC P0560 to be set.
For complete information and additional diagnostics for the vehicle charging system, refer to Charging System.
Number(s) below refer to the step number(s) on the Diagnostic Table.
This vehicle is equipped with a PCM which utilizes an Electrically Erasable Programmable Read Only Memory (EEPROM). When the PCM is being replaced, the new PCM must be programmed. Refer to Powertrain Control Module Replacement/Programming .
Step | Action | Value(s) | Yes | No |
---|---|---|---|---|
1 | Was the Powertrain On Board Diagnostic (OBD) System Check performed? | -- | ||
2 | Is DTC P1635 also set? | -- | ||
3 |
Is Ignition 1 voltage between the specified values? | 10 V-16 V | ||
4 |
Note test result; does scan tool indicate DTC failed this ignition? | -- | Refer to Diagnostic Aids | |
5 |
Does DMM show battery voltage between the specified values? | 10 V-16 V | ||
6 |
Does the DMM show battery voltage between the specified values? | 10 V-16 V | ||
7 |
Does the DMM display voltage near the specified value with the Gen. L Term. commanded on? | B+ | ||
8 | Compare the Ignition 1 voltage displayed on the scan tool with the actual battery voltage read with the DMM. Does the scan tool Ignition 1 value closely match the actual value read with the DMM? | -- | Refer to Diagnostic Aids | |
9 |
Was a problem found? | -- | ||
10 |
Was a problem found? | -- | ||
11 |
Was a problem found? | -- | ||
12 |
Was a problem found? | -- | Refer to Diagnosis in Charging Systems | |
Replace the PCM. Important: : The replacement PCM must be programmed. Refer to Powertrain Control Module Replacement/Programming . Is the action complete? | -- | -- | ||
14 |
Is Ignition 1 voltage between the specified values? | 10 V-16 V | System OK |