DTC P0563: ECM Power Source Circuit High Voltage Turn the ignition switch ON (II). Check the BATTERY in the DATA LIST with the HDS. Is about 18.2 V or higher indicated?
YES | - | Go to Step 3 .
NO | - | Go to Step 4 .
Check the battery voltage with a circuit tester. Is about 18.2 V or higher indicated?
YES | - | Replace the battery, then go to Step 6 .
NO | - | Go to Step 8 .
Start the engine. Check the BATTERY in the DATA LIST with the HDS. Is about 18.2 V or higher indicated?
YES | - | Check the alternator, then go to Step 6 .
NO | - | Intermittent failure, system is OK at this time.■
Reset the ECM with the HDS. Check for Temporary DTCs or DTCs with the HDS. Are any Temporary DTCs or DTCs indicated?
YES | - | If DTC P0563 is indicated, check for poor connections or loose terminals at the ECM, then go to Step 1 . If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.
NO | - | Troubleshooting is complete.■
Update the ECM if it does not have the latest software, or substitute a known-good ECM. Check for Temporary DTCs or DTCs with the HDS. Are any Temporary DTCs or DTCs indicated?
YES | - | If DTC P0563 is indicated, check for poor connections or loose terminals at the ECM, then go to Step 1 . If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.
NO | - | If the ECM was updated, troubleshooting is complete. If the ECM was substituted, replace the original ECM. ■