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HOMESERVICE MANUALSBUICK2005LESABRE LIMITED, 4T65E/M15REPAIR AND DIAGNOSIS (SINGLE PAGE)ELECTRICALCHARGING SYSTEMSBATTERY, CHARGING SYSTEM AND STARTING SYSTEMDIAGNOSTIC INFORMATION AND PROCEDURESDTC P0560CONDITIONS FOR CLEARING THE DTC
2005 Buick LeSabre Limited, 4T65E/M15

Conditions for Clearing the DTC

2005 Buick LeSabre Limited, 4T65E/M15SECTION Conditions for Clearing the DTC
  • The PCM will command the message OFF after one trip in which the diagnostic test has been 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 the scan tool Clear DTC Information function.
DTC P0560

Step Action Value Yes No
Schematic Reference: Engine Controls Schematics in Engine Controls - 3.8L
Connector End View Reference: Engine Controls Connector End Views in Engine Controls - 3.8L
1 Did you perform the Diagnostic System Check - Vehicle? - Go to Step 2  Go to Diagnostic System Check - Vehicle in Vehicle DTC Information
2
  1. Install a scan tool.
  2. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.
  3. Using the scan tool, observe the specific DTC information for DTC P0560 until the test runs.
Does the scan tool indicate that DTC P0560 has passed this ignition cycle?		 - Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems Go to Step 3 
3
  1. Leave the engine running.
  2. With a scan tool, observe the ignition 1 signal parameter in the powertrain control module (PCM) data list.
Does the scan tool indicate that the ignition 1 signal parameter is within the specified value?		 9.0 -16.0 V Go to Step 6  Go to Step 4 
4 Using a scan tool compare the Battery Voltage parameter in the DIM data list with the ignition 1 signal parameter in the PCM data list.
Are the DIM battery voltage and PCM ignition 1 readings different by more than the value specified?		 0.5 V Go to Step 5  Go to Charging System Test 
5 Test the battery positive voltage circuit of the PCM for a high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 8  Go to Step 6 
6 Inspect for poor connections at the harness connector of the PCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 8  Go to Step 7 
7 Replace the PCM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup and programming.
Did you complete the replacement?		 - Go to Step 8  -
8
  1. Review and record the scan tool Fail Records data.
  2. Use the scan tool in order to clear the DTC.
  3. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.
  4. Using the scan tool, observe the specific DTC information for DTC P0560 until the test runs.
Does the scan tool indicate that DTC P0560 failed this ignition?		 - Go to Step 3  System OK
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.