Engine Electrical

DTC P0562

Circuit Description

The engine control module (ECM)/powertrain control module (PCM) monitors the system voltage to make sure that the voltage stays within the proper range. If the ECM/PCM detects an excessively low system voltage, DTC P0562 will set.

When the charging system detects a fault, the instrument panel cluster (IPC) displays a message or the charge indicator will light.

DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC P0562 System Voltage Low

Conditions for Running the DTC

* The engine run time is more than 20 seconds and above 1,200 RPM.
* The vehicle speed is above 8 km/h (5 mph).

Conditions for Setting the DTC

The ECM/PCM detects an improper voltage below 11 volts for 5 seconds.

Action Taken When the DTC Sets

* The ECM/PCM stores the DTC information into memory when the diagnostic runs and fails.
* The ECM/PCM will store conditions which were present when the DTC set as Failure Records data only.
* The ECM/PCM disables most outputs.
* The transmission defaults to a predetermined gear.
* The torque converter clutch (TCC) operation is inhibited.
* The IPC displays a message.
* The malfunction indicator lamp (MIL) will not illuminate.

Conditions for Clearing the DTC

* The Conditions for Setting the DTC are no longer present.
* A history DTC will clear after 40 malfunction-free ignition cycles.
Test

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