DTC Troubleshooting: P24BF
DTC P24BF: Canister Change Over Valve Control Circuit High Voltage
NOTE: Before you troubleshoot, review the general troubleshooting information.

DTC Description
Confirmed DTC
Pending DTC
P24BF Canister Change Over Valve Control Circuit High Voltage
    

1.
Problem verification:

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.
Turn the vehicle to the ON mode.

?5.
Select the EVAP TEST (ELCM) in the INSPECTION MENU, then select EVAP Leak Check Module Test with the HDS.

  

Is the result OK?

     
YES
     
     
     
If the test result is PASSED, intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the EVAP leak check module 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.?
     
NO
     
     
     
The failure is duplicated. Go to step 2.
2.
Shorted wire check (CCV line to power):

Shorted wire check (CCV line to power)
?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)
EVAP leak check module 8P connector

?4.
Turn the vehicle to the ON mode.

?5.
Measure the voltage between test points 1 and 2.
Test condition
Vehicle ON mode
PCM connector A (50P): disconnected
EVAP leak check module 8P connector: disconnected
Test point 1
PCM connector A (50P) No. 6
Test point 2
Body ground

Is there battery voltage?

     
YES
     
     
     
Repair a short to power in the CCV wire between the PCM (A6) and the EVAP leak check module.?
     
NO
     
     
     
Go to step 3.
3.
EVAP leak check module check:

EVAP leak check module check
?1.
Substitute a known-good EVAP leak check module.

?2.
Reconnect all connectors.

?3.
Exit the SCS mode with the HDS.


?4.
Turn the vehicle to the ON mode.

?5.
Reset the PCM with the HDS.


?6.
Select the EVAP TEST (ELCM) in the INSPECTION MENU, then select EVAP Leak Check Module Test with the HDS.

  

Is the test result of the DTC P24BF Failed?

     
YES
     
     
     
The failure is duplicated. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good PCM.?
     
NO