Refer to
Instrument Panel Cluster and Data Link Connector
Circuit Description
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.
Conditions for Setting the DTC
| • | The engine is running. |
| • | System voltage monitored at the PCM ignition feed circuit is below 10 volts or above 16 volts. |
| • | Above conditions for longer than 2 seconds. |
Action Taken When the DTC Sets
| • | 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. |
Conditions for Clearing the MIL/DTC
| • | 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. |
Diagnostic Aids
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 P0506 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.
For complete information and additional diagnostics for the vehicle charging system, refer to Charging System.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Was the Powertrain On-Board Diagnostic System Check performed? | -- | Go to Powertrain OBD System Check | |
2 | Is DTC P1635 also set? | -- | Go to DTC P1635 | |
3 |
Is Ignition 1 voltage between the specified values? | 10-16V | ||
4 |
Does scan tool indicate DTC failed this ign? | -- | Go to Diagnostic Aids | |
5 |
Does DVM show battery voltage between the specified values? | 10-16V | ||
6 |
Does DVM show battery voltage between the specified values? | 10-16V | ||
7 |
Does the DVM 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 DVM. Does the scan tool Ignition 1 value closely match the actual value read with the DVM? | -- | Go to Diagnostic Aids | |
9 |
Was a problem found? | -- | ||
10 | Check the Generator Control circuit for an open or a short to ground between the PCM and the generator. If a problem is found, repair as necessary (refer to Repair Procedures in Electrical Diagnosis section 8A-5). Was a problem found? | -- | ||
11 | Check the Generator Control circuit for a poor terminal connection at the PCM. If a problem is found, repair as necessary. Refer to Repair Procedures in Electrical Diagnosis section 8A. Was a problem found? | -- | ||
12 | Check the Generator Control circuit for a poor terminal connection at the generator. If a problem is found, repair as necessary. Refer to Repair Procedures in Electrical Diagnosis section 8A. Was a problem found? | -- | Go to Diagnosis in Charging Systems | |
13 | Replace the PCM. Important: The replacement PCM must be programmed. Refer to PCM Replacement/Programming. Is action complete? | -- | -- | |
14 |
Is Ignition 1 voltage between the specified values? | 10-16V | Repair complete |
