DTC P1DFF (127)

DTC P1DFF  : IGHLDB Relay Circuit

NOTE:  Before you troubleshoot, review the general troubleshooting information .

DTC (Electric Powertrain)

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, and wait 3 minutes.

   -4. Turn the vehicle to the ON mode.

   -5. Check for Pending or Confirmed DTCs with the HDS.

   DTC Description	Confirmed DTC	Pending DTC	Freeze Frame
   P1DFF IGHLDB Relay Circuit

   Is DTC P1DFF indicated?

   YES 

   The failure is duplicated. Go to step 2.

   NO 

   Intermittent failure, the system is OK at this time. 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. Relay check

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

   -2. Remove the service plug and the IPU cover .

   -3. Remove the IGHLDB relay .

   -4. Test the IGHLDB relay .

   Is the relay OK?

   YES 

   Go to step 3.

   NO 

   Replace the IGHLDB relay.

3. Shorted wire check (IGHLDB line)

   -1. Disconnect the following connector.

   Battery condition monitor module connector E (32P)

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

   Test condition	Vehicle OFF (LOCK) mode
   	IGHLDB relay: disconnected
   	Battery condition monitor module connector E (32P): disconnected
   Test point 1	Battery condition monitor module connector E (32P) No. 19
   Test point 2	Body ground

   Is there 1 MΩ or more?

   YES 

   Check for a short to power in the IGB wire between the battery condition module (E2) and IGHLDB relay. If the wire is OK, replace the battery condition monitor module .

   NO 

   Repair a short in the IGHLDB wire between the battery condition monitor module (E19) and the IGHLDB relay.