DTC P0563: PCM Power Source Circuit Unexpected Voltage
NOTE: Before you troubleshoot, review the general troubleshooting information - Refer to: How to Troubleshoot the Fuel and Emissions SystemsHow to Troubleshoot the CVT System(CVT System) .
| DTC Description | Confirmed DTC | Pending DTC | Freeze Frame |
|---|---|---|---|
| P0563 PCM Power Source Circuit Unexpected Voltage |
- 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 Freeze Frame P0563 PCM Power Source Circuit Unexpected Voltage 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 freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the freeze data/on-board snapshot.
- 2. Determine possible failure area (FI MAIN RLY CL- 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 (51P) 4. Measure the voltage between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode PCM connector A (51P): disconnected Test point 1 PCM connector A (51P) No. 3 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 (A) from the under-dash fuse/relay box.
2. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode PCM connector A (51P): disconnected PGM-FI main relay 1: disconnected Test point 1 PCM connector A (51P) No. 3 Test point 2 Body ground Is there continuity?
YES
Repair a short in the FI MAIN RLY CL- wire between the PCM (A3) and PGM-FI main relay 1. If the wire is OK, replace the under-dash fuse/relay box .
NO
The FI MAIN RLY CL- wire is OK. Go to step 4.
- 4. Relay check:
Is the relay OK?
YES
Update the PCM if it does not have the latest software, or substitute a known-good PCM , then recheck. If DTC P0563 goes away and the PCM was updated, troubleshooting is complete. 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 (A) from the under-dash fuse/relay box.
2. Disconnect the following connector.
PCM connector A (51P) 3. Measure the voltage between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode PCM connector A (51P): disconnected PGM-FI main relay 1: disconnected Test point 1 PCM connector A (51P) No. 5 Test point 2 Body ground Is there battery voltage?
YES
Repair a short to power in the FI MAIN RLY OUT wire between PGM-FI main relay 1 and the PCM (A5).
NO
The FI MAIN RLY OUT wire is OK. Go to step 6.
- 6. Relay check:
Is the relay OK?
YES
Update the PCM if it does not have the latest software, or substitute a known-good PCM , then recheck. If DTC P0563 goes away and the PCM was updated, troubleshooting is complete. If DTC P0563 goes away and the PCM was substituted, replace the original PCM .
NO
Replace PGM-FI main relay 1.
