DTC P1673 (22)

DTC P1673  : IGHLD 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 10 seconds.

   -4. Turn the vehicle to the ON mode, and wait 10 seconds.

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

   DTC Description	Confirmed DTC	Pending DTC	Freeze Frame
   P1673 IGHLD Relay Circuit

   Is DTC P1673 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. Fuse check

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

   -2. Check the following fuse.

   Fuse

   No. A10

   Is the fuse OK?

   YES 

   Go to step 3.

   NO 

   Replace the No. A10 fuse. Also check for a short to ground on the No. A10 fuse circuit if needed.

3. IGHLD relay circuit check

   -1. Remove the service plug and the IPU cover .

   -2. Remove the IGHLD1 relay .

   -3. Test the IGHLD1 relay .

   Is the relay OK?

   YES 

   Go to step 4.

   NO 

   Replace the IGHLD1 relay.

4. Shorted wire check (IGHLD/IG_HOLD1_RLY_CL- line)

   -1. Remove the service plug and the IPU cover .

   -2. Disconnect the following connector.

   Battery condition monitor module connector E (32P)

   -3. Measure the resistance between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	IGHLD1 relay: disconnected
   	Battery condition monitor module connector E (32P): disconnected
   Test point 1	Battery condition monitor module connector E (32P) No. 20
   Test point 2	Body ground

   Is there 1 MΩ or more?

   YES 

   Go to step 5.

   NO 

   Repair a short in the IGHLD/IG_HOLD1_RLY_CL- wire between the battery condition monitor module (E20) and the IGHLD1 relay.

5. Open wire check (IGHLD/IG_HOLD1_RLY_CL- line)

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

   Test condition	Vehicle OFF (LOCK) mode
   	IGHLD1 relay: disconnected
   	Battery condition monitor module connector E (32P): disconnected
   Test point 1	Battery condition monitor module connector E (32P) No. 20
   Test point 2	IGHLD1 relay 4P socket (female terminals) No. 4:

   Courtesy of HONDA, U.S.A., INC.

   Is there 1.0 Ω or less?

   YES 

   Go to step 6.

   NO 

   Repair an open in the IGHLD/IG_HOLD1_RLY_CL- wire between the battery condition monitor module (E20) and the IGHLD relay.

6. Open wire check (IGAMONI/IGA line)

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

   Test condition	Vehicle OFF (LOCK) mode
   	IGHLD1 relay: disconnected
   	Battery condition monitor module connector E (32P): disconnected
   Test point 1	Battery condition monitor module connector E (32P) No. 23
   Test point 2	IGHLD1 relay 4P socket (female terminals) No. 2:

   Courtesy of HONDA, U.S.A., INC.

   Is there 1.0 Ω or less?

   YES 

   The IGAMONI/IGA wire is OK. Replace the battery condition monitor module .

   NO 

   Repair an open in the IGAMONI/IGA wire between the battery condition monitor module (E23) and the IGHLD relay.