DTC P0560 System Voltage. Chevrolet Lumina 2000

For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 2000 🢒 Lumina 🢒 Engine 🢒 Engine Controls - 3.1L (LG8) 🢒 DTC P0560 System Voltage

Refer to Engine Controls Schematics

I/P and Generator

Fuses 12, 21, 30 and 39
Fuses 12, 21, 30 and 39
Handling ESD Sensitive Parts Notice
G201
G201
Handling ESD Sensitive Parts Notice
Engine Controls Components
Powertrain Control Module Description
Park/Neutral Position Switch
CCM, I/P, VSS and Radio
OBD II Symbol Description Notice
.

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 Running the DTC

The engine RPM is greater than 650.

Conditions for Setting the DTC

•	System voltage monitored at the PCM ignition feed circuit is below 9.0 volts or above 18.0 volts.

•	Above conditions for longer than 25 seconds.

Action Taken When the DTC Sets

•	The PCM will illuminate the malfunction indicator lamp (MIL) during the second consecutive trip in which the diagnostic test has been run and failed.

•	The PCM will store conditions which were present when the DTC set as Freeze Frame/Failure Records data.

Conditions for Clearing the MIL/DTC

•	The PCM will turn OFF the malfunction indicator lamp (MIL) during the third consecutive trip in which the diagnostic has run and passed.

•	The history DTC will clear after 40 consecutive warm-up cycles have occurred without a malfunction.

•	The DTC can be cleared by using a scan tool.

Diagnostic Aids

Inspect for the following conditions:

Many situations may lead to an intermittent condition. Perform each inspection or test as directed.

Important: : Remove any debris from the connector surfaces before servicing a component. Inspect the connector gaskets when diagnosing or replacing a component. Ensure that the gaskets are installed correctly. The gaskets prevent contaminate intrusion.

•	Loose terminal connection

-	Use a corresponding mating terminal to test for proper tension. Refer to Testing for Intermittent Conditions and Poor Connections , and to Connector Repairs in Wiring Systems for diagnosis and repair.

Inspect the harness connectors for backed out terminals, improper mating, broken locks, improperly formed or damaged terminals, and faulty terminal to wire connection. Refer to Testing for Intermittent Conditions and Poor Connections , and to Connector Repairs in Wiring Systems for diagnosis and repair.

•

Damaged harness--Inspect the wiring harness for damage. If the harness inspection does not reveal a problem, observe the display on the scan tool while moving connectors and wiring harnesses related to the sensor. A change in the scan tool display may indicate the location of the fault. Refer to Wiring Repairs in Wiring Systems for diagnosis and repair.

•	Inspect the powertrain control module (PCM) and the engine grounds for clean and secure connections. Refer to Wiring Repairs in Wiring Systems for diagnosis and repair.

If the condition is determined to be intermittent, reviewing the Snapshot or Freeze Frame/Failure Records may be useful in determining when the DTC or condition was identified.

Step	Action	Values	Yes	No
1	Did you perform the Powertrain On-Board Diagnostic (OBD) System Check?	--	Go to Step 2	Go to Powertrain On Board Diagnostic (OBD) System Check
2	Is DTC P1635 also set?	--	Go to DTC P1635 5 Volt Reference Circuit	Go to Step 3
3	Start and run the engine above 1000 RPM. Observe Ignition 1 on the scan tool. Is Ignition 1 voltage between the specified values?	9.0-18.0 V	Go to Step 4	Go to Step 5
4	Review and record the scan tool Fail Records data. Clear the DTC P0560 and operate the vehicle to duplicate the Fail Records conditions. Using a scan tool, monitor SPECIFIC DTC info for DTC P0560 until the DTC P0560 test runs. Note test result Does scan tool indicate DTC failed this ignition?	--	Go to Step 5	Go to Diagnostic Aids
5	Install a DMM between the battery terminals. Monitor the DMM while running the engine above 1000 RPM. Does DMM show battery voltage between the specified values?	9.0-18.0 V	Go to Step 6	Go to Step 7
6	Load electrical system by turning on the headlamps and the HVAC high blower. Monitor the DMM while running the engine above 2000 RPM. Does DMM show battery voltage between the specified values?	9.0-18.0 V	Go to Step 8	Go to Step 7
7	Turn the ignition OFF and disconnect the generator electrical connector. Turn the ignition ON. Connect a DMM to measure voltage between the Generator Control circuit at the generator harness connector and ground. Command the GEN L Term on using the scan tool. Does the DMM display voltage near the specified value with the GEN L Term. commanded on?	5 V	Go to Step 12	Go to Step 10
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?	--	Go to Diagnostic Aids	Go to Step 9
9	Inspect the PCM ignition feed circuit for a faulty connection between the ignition switch and the PCM. Refer to Power and Grounding Components in Wiring Systems. If a problem is found, replace faulty terminals. Was a problem found?	--	Go to Step 14	Go to Step 13
10	Inspect 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 Wiring Repairs in Wiring Systems. Was a problem found?	--	Go to Step 14	Go to Step 11
11	Inspect the Generator Control circuit for a faulty terminal connection at the PCM. If a problem is found, repair as necessary. Refer to Connector Repairs in Wiring Systems. Was a problem found?	--	Go to Step 14	Go to Step 13
12	Inspect the Generator Control circuit for a faulty terminal connection at the generator. If a problem is found, repair as necessary. Refer to Connector Repairs in Wiring Systems. Was a problem found?	--	Go to Step 14	Go to Diagnostic System Check - Engine Electrical in Engine Electrical
13	Important: : Replacement PCM must be programmed. Replace the PCM. Refer to Powertrain Control Module Replacement/Programming . Did you complete the repair?	--	Go to Step 14	--
14	Clear DTCs. Start and run engine above 1000 RPM. Observe Ignition 1 on the scan tool. Is Ignition 1 voltage between the specified values?	9-18 V	System OK	Go to Step 2