P0563

DTC P0563: Power Supply System

CAUTION
^ If there is any problem in the CAN bus lines, an incorrect diagnostic trouble code may be set. Prior to this diagnosis, diagnose the CAN bus lines.
^ Whenever the ECU is replaced, ensure that the CAN bus lines are normal.

OPERATION
The shift lever-ECU checks that the power supply circuit is normal.

DTC SET CONDITIONS
The voltage from the battery is determined to be overvoltage.

PROBABLE CAUSES
^ Malfunction of the shift lever-ECU
^ Generator malfunction

DIAGNOSIS

STEP 1. Scan tool CAN bus diagnostics
Using scan tool MB991958, diagnose the CAN bus lines.
Q: Is the check result normal?
YES: Go to Step 3.
NO: Repair the CAN bus lines. (Refer to Troubleshooting CAN Bus Diagnostics Table.) After repairing the CAN bus line, go to Step 2.

STEP 2. Check whether the DTC is reset.
Q: Is DTC No. P0563 set?
YES: Go to Step 3.
NO: This diagnosis is complete.

STEP 3. Generator system check
Refer to Charging System, On-vehicle Service Generator Output Line Voltage Drop Test.
Q: Is the check result normal?
YES: Go to Step 4.
NO: Repair or replace the generator related parts.

STEP 4. Check whether the DTC is reset.
Q: Is DTC No. P0563 set?
YES: Shift lever assembly replacement.
NO: Intermittent malfunction. (Refer to How to Cope with Intermittent Malfunction How to Use Troubleshooting/Inspection Service Points.)