DTC P0563

DTC P0563  : PCM Power Source Circuit Unexpected Voltage

DTC (PGM-FI)

1. Problem verification

   -1. Turn the vehicle to the ON mode.

   -2. Clear the DTC with the HDS.

   -3. Turn the vehicle to the OFF (LOCK) mode.

   -4. Wait 10 seconds.

   -5. Turn the vehicle to the ON mode.

   -6. Check for Pending or Confirmed DTCs with the HDS.

   DTC Description	Confirmed DTC	Pending DTC
   P0563 PCM Power Source Circuit Unexpected Voltage

   DTC (PGM-FI)

   Is DTC P0563 indicated?

   YES 

   The failure is duplicated. Go to step 2.

   NO 

   Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at PGM-FI main relay 1 and the PCM. If the on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the on-board snapshot .

2. Determine possible failure area (FI MAIN RLY OUT line, others)

   -1. Turn the vehicle to the OFF (LOCK) mode.

   -2. Jump the SCS line with the HDS, and wait more than 1 minute.

   -3. Disconnect the following connector.

   PCM connector A (50P)

   -4. Measure the voltage between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	PCM connector A (50P): disconnected
   Test point 1	PCM connector A (50P) No. 5
   Test point 2	Body ground

   Is there battery voltage?

   YES 

   Go to step 5.

   NO 

   Go to step 3.

3. Shorted wire check (FI MAIN RLY CL- line)

   -1. Remove PGM-FI main relay 1 .

   -2. Check for continuity between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	PCM connector A (50P): disconnected
   	PGM-FI main relay 1: removed
   Test point 1	PCM connector A (50P) No. 5
   Test point 2	Body ground

   Is there continuity?

   YES 

   Repair a short in the FI MAIN RLY CL- wire between the PCM (A5) and PGM-FI main relay 1.

   NO 

   The FI MAIN RLY CL- wire is OK. Go to step 4.

4. Relay check

   -1. Test PGM-FI main relay 1 .

   Is the relay OK?

   YES 

   Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good PCM , then recheck. If DTC P0563 goes away and the PCM was substituted, replace the original PCM .

   NO 

   Replace PGM-FI main relay 1.

5. Shorted wire check (FI MAIN RLY OUT line to power)

   -1. Remove PGM-FI main relay 1 .

   -2. Measure the voltage between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	PCM connector A (50P): disconnected
   	PGM-FI main relay 1: removed
   Test point 1	PCM connector A (50P) No. 8
   Test point 2	Body ground

   Is there battery voltage?

   YES 

   Repair a short to power in the FI MAIN RLY OUT wire between the PCM (A8) and PGM-FI main relay 1.

   NO 

   The FI MAIN RLY OUT wire is OK. Go to step 6.

6. Relay check

   -1. Test PGM-FI main relay 1 .

   Is the relay OK?

   YES 

   The relay circuit board is OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good PCM , then recheck. If DTC P0563 goes away and the PCM was substituted, replace the original PCM .

   NO 

   Replace PGM-FI main relay 1.