P0560

DTC P0560





Test 1-7





Test 8-14

Circuit Description with 4L80-E / 4L85-E Automatic Transmission
Ignition 1 voltage circuit is the ignition voltage feed for the Powertrain Control Module (PCM). Battery positive voltage circuit is the battery feed for the PCM.
If the PCM detects either a low system voltage or a high system voltage for a short time, then DTC P0560 sets. DTC P0560 is a type C DTC.

Conditions for Running the DTC
System Voltage Low
The engine speed is greater than 1,500 RPM.

System Voltage High
No engine speed needed.

Conditions for Setting the DTC
System Voltage Low
One of the following conditions exist for greater than 15 seconds:
^ The system voltage is less than 10.5 volts at a maximum transmission temperature of 152°C (305°F).
^ The system voltage is less than 6.7 volts at a minimum transmission temperature of -40°C (-40°F).

System Voltage High
System voltage is greater than 19 volts for 10 seconds.

Action Taken When the DTC Sets
^ The PCM does not illuminate the Malfunction Indicator Lamp (MIL).
^ The PCM commands an immediate landing to second gear.
^ The PCM turns off the PC solenoid valve.
^ The PCM inhibits the TCC engagement.
^ The PCM freezes the shift adapts.
^ The PCM records the operating conditions when the Conditions for Setting the DTC are met. The PCM stores this information as Failure Records.
^ The PCM stores DTC P0560 in PCM history.

Conditions for Clearing the DTC
^ A scan tool clears the DTC from PCM history.
^ The PCM clears the DTC from PCM history if the vehicle completes 40 warm-up cycles without a non-emission-related diagnostic fault occurring.
^ The PCM cancels the DTC default actions when the fault no longer exists and the ignition switch is OFF long enough in order to power down the PCM.

Diagnostic Aids
^ Charging the battery with a battery charger and jump starting an engine may set DTCs.
^ DTC P0560 defaults to an elevated line pressure condition which may result in partial TCC apply. This may produce an idle surge that could stall the engine.

Test Description
The numbers below refer to the step numbers on the diagnostic table.
6. This step tests the charging system voltage.
7. This step tests the battery voltage input at the PCM.
9. This step tests the ignition voltage inputs at the PCM.